The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures.
The total of dental diagnostic, preventive, and restorative services provided to meet the needs of a patient (from Illustrated Dictionary of Dentistry, 1982).
Use for articles concerning dental education in general.
Educational institutions for individuals specializing in the field of dentistry.
Individuals enrolled a school of dentistry or a formal educational program in leading to a degree in dentistry.
Localized destruction of the tooth surface initiated by decalcification of the enamel followed by enzymatic lysis of organic structures and leading to cavity formation. If left unchecked, the cavity may penetrate the enamel and dentin and reach the pulp.
Dental care for patients with chronic diseases. These diseases include chronic cardiovascular, endocrinologic, hematologic, immunologic, neoplastic, and renal diseases. The concept does not include dental care for the mentally or physically disabled which is DENTAL CARE FOR DISABLED.
The giving of attention to the special dental needs of children, including the prevention of tooth diseases and instruction in dental hygiene and dental health. The dental care may include the services provided by dental specialists.
Facilities where dental care is provided to patients.
A richly vascularized and innervated connective tissue of mesodermal origin, contained in the central cavity of a tooth and delimited by the dentin, and having formative, nutritive, sensory, and protective functions. (Jablonski, Dictionary of Dentistry, 1992)
Persons trained in an accredited school or dental college and licensed by the state in which they reside to provide dental prophylaxis under the direction of a licensed dentist.
The teaching staff and members of the administrative staff having academic rank in a dental school.
Dental care for the emotionally, mentally, or physically disabled patient. It does not include dental care for the chronically ill ( = DENTAL CARE FOR CHRONICALLY ILL).
Abnormal fear or dread of visiting the dentist for preventive care or therapy and unwarranted anxiety over dental procedures.
Insurance providing coverage for dental care.
Personnel whose work is prescribed and supervised by the dentist.
Services designed to promote, maintain, or restore dental health.
The study of laws, theories, and hypotheses through a systematic examination of pertinent facts and their interpretation in the field of dentistry. (From Jablonski, Illustrated Dictionary of Dentistry, 1982, p674)
The giving of attention to the special dental needs of the elderly for proper maintenance or treatment. The dental care may include the services provided by dental specialists.
The curve formed by the row of TEETH in their normal position in the JAW. The inferior dental arch is formed by the mandibular teeth, and the superior dental arch by the maxillary teeth.
A film that attaches to teeth, often causing DENTAL CARIES and GINGIVITIS. It is composed of MUCINS, secreted from salivary glands, and microorganisms.
An alloy used in restorative dentistry that contains mercury, silver, tin, copper, and possibly zinc.
The room or rooms in which the dentist and dental staff provide care. Offices include all rooms in the dentist's office suite.
Data collected during dental examination for the purpose of study, diagnosis, or treatment planning.
Personnel who provide dental service to patients in an organized facility, institution or agency.
The nonexpendable items used by the dentist or dental staff in the performance of professional duties. (From Boucher's Clinical Dental Terminology, 4th ed, p106)
Nonspecialized dental practice which is concerned with providing primary and continuing dental care.
Presentation devices used for patient education and technique training in dentistry.
Individuals who assist the dentist or the dental hygienist.
Educational programs designed to inform dentists of recent advances in their fields.
A range of methods used to reduce pain and anxiety during dental procedures.
Biocompatible materials placed into (endosseous) or onto (subperiosteal) the jawbone to support a crown, bridge, or artificial tooth, or to stabilize a diseased tooth.
Radiographic techniques used in dentistry.
Materials used in the production of dental bases, restorations, impressions, prostheses, etc.
Educational programs for dental graduates entering a specialty. They include formal specialty training as well as academic work in the clinical and basic dental sciences, and may lead to board certification or an advanced dental degree.
The principles of proper professional conduct concerning the rights and duties of the dentist, relations with patients and fellow practitioners, as well as actions of the dentist in patient care and interpersonal relations with patient families. (From Stedman, 25th ed)
Hospital department providing dental care.
Individuals licensed to practice DENTISTRY.
Societies whose membership is limited to dentists.
The field of dentistry involved in procedures for designing and constructing dental appliances. It includes also the application of any technology to the field of dentistry.
A systematic collection of factual data pertaining to dental or oral health and disease in a human population within a given geographic area.
A chronic endemic form of hypoplasia of the dental enamel caused by drinking water with a high fluorine content during the time of tooth formation, and characterized by defective calcification that gives a white chalky appearance to the enamel, which gradually undergoes brown discoloration. (Jablonski's Dictionary of Dentistry, 1992, p286)
The granting of a license to practice dentistry.
Facilities for the performance of services related to dental treatment but not done directly in the patient's mouth.
Various branches of dental practice limited to specialized areas.
Amounts charged to the patient as payer for dental services.
Individuals responsible for fabrication of dental appliances.
The organization and operation of the business aspects of a dental practice.
Dense fibrous layer formed from mesodermal tissue that surrounds the epithelial enamel organ. The cells eventually migrate to the external surface of the newly formed root dentin and give rise to the cementoblasts that deposit cementum on the developing root, fibroblasts of the developing periodontal ligament, and osteoblasts of the developing alveolar bone.
The profession concerned with the teeth, oral cavity, and associated structures, and the diagnosis and treatment of their diseases including prevention and the restoration of defective and missing tissue.
Skills, techniques, standards, and principles used to improve the art and symmetry of the teeth and face to improve the appearance as well as the function of the teeth, mouth, and face. (From Boucher's Clinical Dental Terminology, 4th ed, p108)
Providing for the full range of dental health services for diagnosis, treatment, follow-up, and rehabilitation of patients.
Education which increases the awareness and favorably influences the attitudes and knowledge relating to the improvement of dental health on a personal or community basis.
The psychological relations between the dentist and patient.
One of a set of bone-like structures in the mouth used for biting and chewing.
Efforts to prevent and control the spread of infections within dental health facilities or those involving provision of dental care.
Mesodermal tissue enclosed in the invaginated portion of the epithelial enamel organ and giving rise to the dentin and pulp.
An artificial replacement for one or more natural teeth or part of a tooth, or associated structures, ranging from a portion of a tooth to a complete denture. The dental prosthesis is used for cosmetic or functional reasons, or both. DENTURES and specific types of dentures are also available. (From Boucher's Clinical Dental Terminology, 4th ed, p244 & Jablonski, Dictionary of Dentistry, 1992, p643)
A detailed review and evaluation of selected clinical records by qualified professional personnel for evaluating quality of dental care.
The optimal state of the mouth and normal functioning of the organs of the mouth without evidence of disease.
A computer based method of simulating or analyzing the behavior of structures or components.
The plan and delineation of dental prostheses in general or a specific dental prosthesis. It does not include DENTURE DESIGN. The framework usually consists of metal.
Hand-held tools or implements especially used by dental professionals for the performance of clinical tasks.
Any waste product generated by a dental office, surgery, clinic, or laboratory including amalgams, saliva, and rinse water.
The grafting or inserting of a prosthetic device of alloplastic material into the oral tissue beneath the mucosal or periosteal layer or within the bone. Its purpose is to provide support and retention to a partial or complete denture.
Economic aspects of the dental profession and dental care.
"Decayed, missing and filled teeth," a routinely used statistical concept in dentistry.
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions for use in restorative or prosthetic dentistry.
The predisposition to tooth decay (DENTAL CARIES).
A prosthesis that gains its support, stability, and retention from a substructure that is implanted under the soft tissues of the basal seat of the device and is in contact with bone. (From Boucher's Clinical Dental Terminology, 4th ed)
The application of computer and information sciences to improve dental practice, research, education and management.
The practice of personal hygiene of the mouth. It includes the maintenance of oral cleanliness, tissue tone, and general preservation of oral health.
The relationship of all the components of the masticatory system in normal function. It has special reference to the position and contact of the maxillary and mandibular teeth for the highest efficiency during the excursive movements of the jaw that are essential for mastication. (From Jablonski, Dictionary of Dentistry, 1992, p556, p472)
Removal of dental plaque and dental calculus from the surface of a tooth, from the surface of a tooth apical to the gingival margin accumulated in periodontal pockets, or from the surface coronal to the gingival margin.
That phase of clinical dentistry concerned with the restoration of parts of existing teeth that are defective through disease, trauma, or abnormal development, to the state of normal function, health, and esthetics, including preventive, diagnostic, biological, mechanical, and therapeutic techniques, as well as material and instrument science and application. (Jablonski's Dictionary of Dentistry, 2d ed, p237)
Use for material on dental facilities in general or for which there is no specific heading.
Devices used in the home by persons to maintain dental and periodontal health. The devices include toothbrushes, dental flosses, water irrigators, gingival stimulators, etc.
The branch of dentistry concerned with the prevention of disease and the maintenance and promotion of oral health.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Photographic techniques used in ORTHODONTICS; DENTAL ESTHETICS; and patient education.
The surgical removal of a tooth. (Dorland, 28th ed)
A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin.
Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.
The most posterior teeth on either side of the jaw, totaling eight in the deciduous dentition (2 on each side, upper and lower), and usually 12 in the permanent dentition (three on each side, upper and lower). They are grinding teeth, having large crowns and broad chewing surfaces. (Jablonski, Dictionary of Dentistry, 1992, p821)
A type of porcelain used in dental restorations, either jacket crowns or inlays, artificial teeth, or metal-ceramic crowns. It is essentially a mixture of particles of feldspar and quartz, the feldspar melting first and providing a glass matrix for the quartz. Dental porcelain is produced by mixing ceramic powder (a mixture of quartz, kaolin, pigments, opacifiers, a suitable flux, and other substances) with distilled water. (From Jablonski's Dictionary of Dentistry, 1992)
A rapid, low-dose, digital imaging system using a small intraoral sensor instead of radiographic film, an intensifying screen, and a charge-coupled device. It presents the possibility of reduced patient exposure and minimal distortion, although resolution and latitude are inferior to standard dental radiography. A receiver is placed in the mouth, routing signals to a computer which images the signals on a screen or in print. It includes digitizing from x-ray film or any other detector. (From MEDLINE abstracts; personal communication from Dr. Charles Berthold, NIDR)
The practice of dentistry concerned with preventive as well as diagnostic and treatment programs in a circumscribed population.
General or unspecified diseases of the stomatognathic system, comprising the mouth, teeth, jaws, and pharynx.
The practice of dentistry concerned with the dental problems of children, proper maintenance, and treatment. The dental care may include the services provided by dental specialists.
Professional society representing the field of dentistry.
Creation of a smooth and glossy surface finish on a denture or amalgam.
Patterns of practice in dentistry related to diagnosis and treatment.
Insertion of an implant into the bone of the mandible or maxilla. The implant has an exposed head which protrudes through the mucosa and is a prosthodontic abutment.
Pain in the adjacent areas of the teeth.
The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.
Laws and regulations pertaining to the field of dentistry, proposed for enactment or recently enacted by a legislative body.
Elements of limited time intervals, contributing to particular results or situations.
Congenital absence of or defects in structures of the teeth.
Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.
An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.
Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820)
Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor.
An acquired or hereditary condition due to deficiency in the formation of tooth enamel (AMELOGENESIS). It is usually characterized by defective, thin, or malformed DENTAL ENAMEL. Risk factors for enamel hypoplasia include gene mutations, nutritional deficiencies, diseases, and environmental factors.
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
Examination of the mouth and teeth toward the identification and diagnosis of intraoral disease or manifestation of non-oral conditions.
An approach or process of practicing oral health care that requires the judicious integration of systematic assessments of clinical relevant scientific evidence, relating to the patient's oral and medical condition and history, with the dentist's clinical expertise and the patient's treatment needs and preferences. (from J Am Dent Assoc 134: 689, 2003)
Any group of three or more full-time dentists, organized in a legally recognized entity for the provision of dental care, sharing space, equipment, personnel and records for both patient care and business management, and who have a predetermined arrangement for the distribution of income.
The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
Component of the NATIONAL INSTITUTES OF HEALTH. It supports a comprehensive research portfolio that focuses on the biological, social, behavioral and neuroscientific bases of drug abuse on the body and brain as well as its causes, prevention, and treatment. NIDA, NIAAA, and NIMH were created as coequal institutes within the Alcohol, Drug Abuse and Mental Health Administration in 1974. It was established within the NATIONAL INSTITUTES OF HEALTH in 1992.
Endodontic diseases of the DENTAL PULP inside the tooth, which is distinguished from PERIAPICAL DISEASES of the tissue surrounding the root.
Traumatic or other damage to teeth including fractures (TOOTH FRACTURES) or displacements (TOOTH LUXATION).
Abnormal concretion or calcified deposit that forms around the teeth or dental prostheses.
Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.
Works about clinical trials that involve at least one test treatment and one control treatment, concurrent enrollment and follow-up of the test- and control-treated groups, and in which the treatments to be administered are selected by a random process, such as the use of a random-numbers table.
The teeth of the first dentition, which are shed and replaced by the permanent teeth.
Maleness or femaleness as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or effect of a circumstance. It is used with human or animal concepts but should be differentiated from SEX CHARACTERISTICS, anatomical or physiological manifestations of sex, and from SEX DISTRIBUTION, the number of males and females in given circumstances.
The teeth collectively in the dental arch. Dentition ordinarily refers to the natural teeth in position in their alveoli. Dentition referring to the deciduous teeth is DENTITION, PRIMARY; to the permanent teeth, DENTITION, PERMANENT. (From Jablonski, Dictionary of Dentistry, 1992)
An operation in which carious material is removed from teeth and biomechanically correct forms are established in the teeth to receive and retain restorations. A constant requirement is provision for prevention of failure of the restoration through recurrence of decay or inadequate resistance to applied stresses. (Boucher's Clinical Dental Terminology, 4th ed, p239-40)
An adhesion procedure for orthodontic attachments, such as plastic DENTAL CROWNS. This process usually includes the application of an adhesive material (DENTAL CEMENTS) and letting it harden in-place by light or chemical curing.
An index which scores the degree of dental plaque accumulation.
The act of cleaning teeth with a brush to remove plaque and prevent tooth decay. (From Webster, 3d ed)
Synthetic resins, containing an inert filler, that are widely used in dentistry.
Inability or inadequacy of a dental restoration or prosthesis to perform as expected.
A dental specialty concerned with the maintenance of the dental pulp in a state of health and the treatment of the pulp cavity (pulp chamber and pulp canal).
A dental specialty concerned with the restoration and maintenance of oral function by the replacement of missing TEETH and related structures by artificial devices or DENTAL PROSTHESES.
Substances used to bond COMPOSITE RESINS to DENTAL ENAMEL and DENTIN. These bonding or luting agents are used in restorative dentistry, ROOT CANAL THERAPY; PROSTHODONTICS; and ORTHODONTICS.
Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.
The process of TOOTH formation. It is divided into several stages including: the dental lamina stage, the bud stage, the cap stage, and the bell stage. Odontogenesis includes the production of tooth enamel (AMELOGENESIS), dentin (DENTINOGENESIS), and dental cementum (CEMENTOGENESIS).
Procedure of producing an imprint or negative likeness of the teeth and/or edentulous areas. Impressions are made in plastic material which becomes hardened or set while in contact with the tissue. They are later filled with plaster of Paris or artificial stone to produce a facsimile of the oral structures present. Impressions may be made of a full complement of teeth, of areas where some teeth have been removed, or in a mouth from which all teeth have been extracted. (Illustrated Dictionary of Dentistry, 1982)
Pathological processes involving the PERIODONTIUM including the gum (GINGIVA), the alveolar bone (ALVEOLAR PROCESS), the DENTAL CEMENTUM, and the PERIODONTAL LIGAMENT.
The largest country in North America, comprising 10 provinces and three territories. Its capital is Ottawa.
Natural teeth or teeth roots used as anchorage for a fixed or removable denture or other prosthesis (such as an implant) serving the same purpose.
Social and economic factors that characterize the individual or group within the social structure.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
A means of identifying the age of an animal or human through tooth examination.
Chemicals especially for use on instruments to destroy pathogenic organisms. (Boucher, Clinical Dental Terminology, 4th ed)
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
The application of dental knowledge to questions of law.
Agents used to occlude dental enamel pits and fissures in the prevention of dental caries.
A course of study offered by an educational institution.
The third tooth to the left and to the right of the midline of either jaw, situated between the second INCISOR and the premolar teeth (BICUSPID). (Jablonski, Dictionary of Dentistry, 1992, p817)
A dental specialty concerned with the histology, physiology, and pathology of the tissues that support, attach, and surround the teeth, and of the treatment and prevention of disease affecting these tissues.
A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.
True-false questionnaire made up of items believed to indicate anxiety, in which the subject answers verbally the statement that describes him.
Accumulations of microflora that lead to pathological plaque and calculus which cause PERIODONTAL DISEASES. It can be considered a type of BIOFILMS. It is subtly distinguished from the protective DENTAL PELLICLE.
A tooth from which the dental pulp has been removed or is necrotic. (Boucher, Clinical Dental Terminology, 4th ed)
Requirements for the selection of students for admission to academic institutions.
Procedures for finding the mathematical function which best describes the relationship between a dependent variable and one or more independent variables. In linear regression (see LINEAR MODELS) the relationship is constrained to be a straight line and LEAST-SQUARES ANALYSIS is used to determine the best fit. In logistic regression (see LOGISTIC MODELS) the dependent variable is qualitative rather than continuously variable and LIKELIHOOD FUNCTIONS are used to find the best relationship. In multiple regression, the dependent variable is considered to depend on more than a single independent variable.
Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.
Such malposition and contact of the maxillary and mandibular teeth as to interfere with the highest efficiency during the excursive movements of the jaw that are essential for mastication. (Jablonski, Illustrated Dictionary of Dentistry, 1982)
Substances that inhibit or arrest DENTAL CARIES formation. (Boucher's Clinical Dental Terminology, 4th ed)
Progressive loss of the hard substance of a tooth by chemical processes that do not involve bacterial action. (Jablonski, Dictionary of Dentistry, 1992, p296)
One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS.
A polysaccharide-producing species of STREPTOCOCCUS isolated from human dental plaque.
Application of a protective agent to an exposed pulp (direct capping) or the remaining thin layer of dentin over a nearly exposed pulp (indirect capping) in order to allow the pulp to recover and maintain its normal vitality and function.
The 32 teeth of adulthood that either replace or are added to the complement of deciduous teeth. (Boucher's Clinical Dental Terminology, 4th ed)
The use of a layer of tooth-colored material, usually porcelain or acrylic resin, applied to the surface of natural teeth, crowns, or pontics by fusion, cementation, or mechanical retention.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
Studies in which variables relating to an individual or group of individuals are assessed over a period of time.
Surgical procedures used to treat disease, injuries, and defects of the oral and maxillofacial region.
Complete or severe loss of the subjective sense of taste, frequently accompanied by OLFACTION DISORDERS.
Total lack of teeth through disease or extraction.
A set of techniques used when variation in several variables has to be studied simultaneously. In statistics, multivariate analysis is interpreted as any analytic method that allows simultaneous study of two or more dependent variables.
A class of statistical methods applicable to a large set of probability distributions used to test for correlation, location, independence, etc. In most nonparametric statistical tests, the original scores or observations are replaced by another variable containing less information. An important class of nonparametric tests employs the ordinal properties of the data. Another class of tests uses information about whether an observation is above or below some fixed value such as the median, and a third class is based on the frequency of the occurrence of runs in the data. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1284; Corsini, Concise Encyclopedia of Psychology, 1987, p764-5)
Control, direction and financing of the total dental care of the population by a national government.
The branch of dentistry concerned with the dental problems of older people.

In vitro comparison of the retention capacity of new aesthetic brackets. (1/1055)

Tensile bond strength and bond failure location were evaluated in vitro for two types of aesthetic brackets (non-silanated ceramic, polycarbonate) and one stainless steel bracket, using bovine teeth as the substrate and diacrylate resin as the adhesive. The results show that metallic bracket had the highest bond strength (13.21 N) followed by the new plastic bracket (12.01 N), which does not require the use of a primer. The non-silanated ceramic bracket produced the lowest bond strength (8.88 N). Bond failures occurred mainly between bracket and cement, although a small percentage occurred between the enamel-cement interface with the metal and plastic brackets and within the cement for the plastic bracket. With the ceramic bracket all the failures occurred at the bracket-cement interface. This suggests that the problems of enamel lesions produced by this type of bracket may have been eliminated. The results also show that the enamel/adhesive bond is stronger than the adhesive/bracket bond in this in vitro study.  (+info)

The crystal growth technique--a laboratory evaluation of bond strengths. (2/1055)

An ex vivo study was carried out to determine differences in the bond strengths achieved with brackets placed using a crystal growth technique compared with a conventional acid-etch technique. A solution of 37 per cent phosphoric acid was used for acid-etching and a commercially available polyacrylic acid gel, Crystal-lok for crystal growth. A heavily-filled composite resin was used for all samples to bond brackets to healthy premolar teeth extracted for orthodontic purposes. Polycrystalline ceramic and stainless steel brackets were used and tested to both tensile and shear failure using an Instron Universal Testing machine. The tensile and shear bond strengths were recorded in kgF. In view of difficulties experienced with previous authors using different units to describe their findings, the data were subsequently converted to a range of units in order to facilitate direct comparison. The crystal growth technique produced significantly lower bond strengths than the acid-etch technique for ceramic and stainless steel brackets, both in tensile and shear mode. The tensile bond strength for stainless steel brackets with crystal growth was 2.2 kg compared with 6.01 kg for acid-etch, whilst with ceramic brackets the tensile bond strengths were 3.9 kg for crystal growth and 5.55 kg for acid-etch. The mean shear bond strength for stainless steel brackets with crystal growth was 12.61 kg compared with 21.55 kg for acid-etch, whilst with ceramic brackets the shear bond strengths were 7.93 kg with crystal growth compared with 16.55 kg for acid-tech. These bond strengths were below those previously suggested as clinically acceptable.  (+info)

The effects of increasing the reverse curve of Spee in a lower archwire examined using a dynamic photo-elastic gelatine model. (3/1055)

This paper describes the development and testing of a dynamic in vitro photo-elastic model for evaluating the effects of orthodontic mechanics on an entire arch of teeth. A model of a mandibular arch was made and the teeth were embedded in a gelatine material with a high level of mechanical creep which permitted tooth movement in response to orthodontic forces. The excellent photo-elastic properties of this material also facilitated the analysis of the stress distribution around the roots of the teeth. The model of a mandibular arch was used to investigate the tooth movements and stress distributions produced by increasing the reverse curve of Spee in a 0.018 x 0.025-inch stainless steel archwire. The results revealed that a 1-mm reverse curve of Spee increased the arch length by 1.6 mm, but increasing the reverse curve of Spee to 5 mm did not increase arch length further. Photo-elastic analysis showed an increased stress distribution around the roots of the incisors and molars as the reverse curve of Spee was increased in the archwire.  (+info)

Bone response to orthodontic loading of endosseous implants in the rabbit calvaria: early continuous distalizing forces. (4/1055)

The purpose of this experimental study was to evaluate the effect of early orthodontic loading on the stability and bone-implant interface of titanium implants in a rabbit model. Twenty-four short threaded titanium fixtures were inserted in the calvarial mid-sagittal suture of 10 rabbits. Two weeks following insertion, 20 implants (test group) were subjected to continuous distalization forces of 150 g for a period of 8 weeks. The remaining four implants (control group) were left unloaded for the same follow-up interval. Clinically, all implants except for one test fixture were stable, and exhibited no mobility or displacement throughout the experimental loading period. Histologically, all stable implants were well-integrated into bone. No differences could be found between the pressure and tension surfaces of the test implants relative to bone quality and density within a range of 1000 microns from the fixture surface. Similarly, qualitative differences were not observed between the apical and coronal portions of test fixtures. Morphometrically, a mean percentage bone-to-implant contact of 76.00 +/- 18.73 per cent was found at the test pressure sides, 75.00 +/- 11.54 per cent at the test tension sides, and 68.00 +/- 15.55 per cent at the control unloaded surfaces. No statistically significant differences in the percentage of bone-to-metal contact length fraction were found between test pressure surfaces, test tension surfaces, and unloaded control surfaces. Marginal bone resorption around the implant collar or immediately beneath it was found in roughly the same percentage of analysed sites in the test and control fixtures. In contrast, slight bone apposition was demonstrated at the implant collar of the test pressure surfaces, while no apposition or resorption were observed in the test tension zones. This study suggests that short endosseous implants can be used as anchoring units for orthodontic tooth movement early in the post-insertion healing period.  (+info)

The effects of sandblasting on the bond strength of molar attachments--an in vitro study. (5/1055)

This study evaluated the effect of sandblasting foil mesh molar tube bases on the shear bond strength obtained when bonding to first molar teeth. Fifty-two recently extracted first molar teeth were etched with 35 per cent phosphoric acid gel for 30 seconds. Twenty-six sandblasted 'A' Company molar tube attachments and 26 non-sandblasted attachments were then bonded to the teeth using Phase II orthodontic bonding resin. After storage in water for 24 hours at 37 degrees C, the specimens were debonded in a direction parallel to the buccal surface. Survival analysis using the Weibull function revealed that for a 90 per cent probability of survival, the predicted bond strengths for sandblasted and non-sandblasted bases were 1.76 and 1.66 MPa, respectively. For larger shear stresses, the probabilities of bond survival with sandblasted molar tubes were greater than with non-sandblasted molar tubes although the differences were small, which may be explained by the large proportion of bond failures which occurred at the resin to enamel interface in both groups. It was concluded that sandblasting foil mesh bases is likely to provide only a minimal improvement in clinical performance when bonding to molar teeth.  (+info)

A laboratory investigation to compare enamel preparation by sandblasting or acid etching prior to bracket bonding. (6/1055)

A laboratory investigation to compare the mean shear debonding force and mode of bond failure of metallic brackets bonded to sandblasted and acid-etched enamel is described. The buccal surfaces of 30 extracted human premolars were sandblasted for 5 seconds with 50 mu alumina and the buccal surfaces of a further 30 human premolars were etched with 37 per cent phosphoric acid for 15 seconds. Following storage for 24 hours at 37 degrees C in distilled water, shear debonding force was measured using an Instron Universal Testing Machine with a cross-head speed of 10 mm/minute. Mean shear debonding force was significantly lower for brackets bonded to sandblasted enamel compared to acid etched enamel (P < 0.001). Weibull analysis showed that at a given stress the probability of failure was significantly greater for brackets bonded to sandblasted enamel. Brackets bonded to etched enamel showed a mixed mode of bond failure whereas following sandblasting, failure was adhesive at the enamel/composite interface (P < 0.01).  (+info)

Factors affecting the shear bond strength of orthodontic brackets to porcelain. (7/1055)

The aim of this investigation was to establish a regime for orthodontic bonding to feldspathic porcelain, which ensures adequate bond strength (6-8 MPa) with minimal damage on debond and consisted of an ex vivo investigation measuring the effects of porcelain surface preparation and thermocycling on shear bond strength of orthodontic brackets. One-hundred-and-twenty feldspathic porcelain bonded crown surfaces were divided into 12 equally-sized groups to assess the effects of: (1) glaze removal, (2) application of hydrofluoric acid, phosphoric acid, or omission of acid treatment, and (3) silane priming upon the bond strength of premolar brackets bonded with Right-on (TM) composite resin adhesive. Specimens were subjected to thermocycling and then to shear debonding forces on an Instron machine. Removal of the porcelain glaze, or use of hydrofluoric acid, prior to bonding were found to be unnecessary to secure the target bond strength. Hydrofluoric acid application was associated with increased porcelain surface damage. Thermocycling caused a significant reduction in shear bond strength to porcelain (P < 0*001). The best regime for orthodontic bonding to feldspathic porcelain was to apply phosphoric acid for 60 seconds, and prime with silane prior to bonding. Usually the porcelain surfaces could be repolished. Refereed Paper  (+info)

Determination of the centre of resistance in an upper human canine and idealized tooth model. (8/1055)

The purpose of this investigation was to analyse the influence of geometric and material parameters of a human canine on initial tooth mobility, and the stress and strain profiles in the periodontal ligament. While the material parameters of tooth and bony structures are known within an uncertain limit of approximately a factor of 10, values reported for the elasticity parameters of the periodontal ligament differ significantly. In the course of this study, bilinear behaviour was assumed for the mechanical property of the periodontium. The finite element model of an elliptical paraboloid was created as an approximation to the geometry of a human canine to reduce calculation time and to determine influences of the geometry on numerical results. The results were compared with those obtained for a realistic human canine model. The root length of both models was 19.5 mm. By calculating pure rotational and pure tipping movements, the centre of resistance (CR) was determined for both models. They were located on the long axis of the tooth approximately 7.2 mm below the alveolar crest for the idealized model and 8.2 mm for the canine model. Thus, the centre of resistance of a human canine seems to be located around two-fifths of the root length from the alveolar margin. Using these results, uncontrolled tipping (1 N of mesializing force and 5 Nmm of derotating momentum), as well as pure translation (additionally about 10 Nmm of uprighting momentum) were calculated. Comparing the idealized and the realistic models, the uncontrolled tipping was described by the parabolic-shaped model within an accuracy limit of 10 per cent as compared with the canine model, whereas the results for bodily movement differed significantly showing that it is very difficult to achieve a pure translation with the realistic canine model.  (+info)

RMS (Reliability-Maintainability-Safety-Supportability) engineering is emerging as the newest discipline in product development due to new credible, accurate, quantitative methods. Weibull Analysis is foremost among these new tools. New and advanced Weibull techniques are a significant improvement o
Tõstevõimsus: 3000 kg Tõsteulatus: 3 m Keti paksus: 10 mm Käepideme pikkus: 410 mm Tõstekonksu kida: 40 mm Min. pikkus: 480 mm Mass: 21 kg
Peak principal stresses as a function of the degree of stenosis. All simulations were performed using a fixed degree of stenosis of 70% and at 160 mmHg blood pr
The Tukey post hoc test is generally the preferred test for conducting post hoc tests on a one-way. Free Shipping Available. Buy How - to on eBay. Money Back Guarantee It is difficult to
This chapter reviews of some important fundamentals of statics and mechanics of solids, the concept of stress, modes of load transmission, general sign convention for stress and force resultants, and analysis and design principles; as well as a discussion of treatment for changing the components of the state of stress given in one set of coordinate axes to any other set of rotated axes, as well as variation of stress within and on the boundaries of a load-carrying member.
The operation of distribution system with the components in deteriorating condition makes the system reliability worsen. It is important to find the solution for balancing failure cost and maintenance benefits such as down-time and reliability. In this paper, time to replace the components in optimum condition based on constant-interval replacement mode is investigated. The optimal replacement time is mainly depended on components reliability and the cost ration of preventive replacement and failure replacement. In this paper, equipment inspection method and Weibull Analysis is applied to obtain the accurate reliability estimation. Weibull Analysis is applied with constant-interval replacement model to investigate the optimum replacement time for each component considering the different cost ratios. According to the quantitative results, the determination of the optimal replacement time (OPT) can minimize the total downtime and failure cost. Consequently, the reliability of the system is maximized and
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TY - JOUR. T1 - Effect of thermocycling on shear bond strength of glass ionomer cements. AU - Ballal, Nidambur Vasudev. AU - Paulson, Liz. AU - Ginjupalli, Kishore. AU - Ozcan, Mutlu. PY - 2019/1/1. Y1 - 2019/1/1. N2 - To evaluate the effect of thermocycling on shear bond strength of Fuji IX glass ionomer cement and a novel glass ionomer cement (Ketac Universal) to dentin. A total of 40 extracted human molars were divided into 4 groups (n = 10). The occlusal surfaces were ground flat to expose dentin using diamond discs. Dentin surfaces were treated according to manufacturers instructions, and restorative materials were applied onto a plastic mold of 3mm height and 4mm diameter. The shear bond strength of Ketac Universal and conventional Fuji IX glass ionomer cements was evaluated after 24 h using Instron Universal Testing Machine at a crosshead speed of 0.5 mm/min before and after the specimens were subjected to thrmocycling. There was no statistical difference in the shear bond strength of ...
This study evaluated the stress distribution based on the canine pillar geometry in human skull, using a finite element analysis. Computed tomography of human skull was used to build a finite element model, which was composed by all bony structures of canine pillar: canine eminence, canine fossa, frontal process of maxilla, glabellum and superciliary arch. A support on the bite contact of maxillary canine tooth and a resultant force of the masticatory muscles was applied in the simulation. Equivalent Von-mises and maximum principal stresses were analyzed along the structures that compose the canine pillar geometry. Von-mises stress presented high stress concentrated at the canine fossa and frontal process of maxilla. Maximum principal stress showed compression areas at the canine fossa and part of frontal process and tensile stress at canine eminence and part of the frontal process. In conclusion, the different stress areas means different force concentrations transmitted along the canine pillar ...
The push-out test has been widely performed to measure the bond strength of intracanal materials in dentistry. However, it is difficult to compare equitably the bond strengths from different testing specimens. The aim of this study was to investigate
A photoelastic stress multiplier is proposed which can perform the multiplication of two stresses or voltages using two cascaded photoelastic modulators. This new multiplier has potential applications in many interdisciplinary fields.. © 2006 Optical Society of America. PDF Article ...
Ansys Minerva, powered by Aras, is the next generation simulation process and data management solution, fusing simulation and optimization to product lifecycle processes across the enterprise. Minerva boosts engineering productivity by democratizing simulation and enhancing collaboration between designers and analysts across geographies and functional silos.. The latest release, Ansys 2021 R1, boasts major UI enhancements and improvements across all capabilities, including improved data management with file comparison, meta data extraction with automatic file conversion, Ansys LS-DYNA job submission and direct integration with Ansys optiSLang Web Apps.. Join us to learn more about Ansys Minerva and the latest capabilities.. ...
test and one-way analysis of variance with Tukeys post hoc test. F Living cell number depending on transport container. Even though, glass bottle showed slight high cell viability, there was no statistical difference between the two containers. Ctrl, 1??107 cells Rabbit Polyclonal to ATG4D suspended in 2?mL of DMEM(H) at 4?C and used immediately, Transported; cell was prepared with same condition and then incubated at 4?C for 12?h. OD, optical density; *in vivohave not been confirmed. To verify the optimum transport heat, cell viability was compared at 4?C, 22?C, and 37?C for 48?h. The number of live cells was higher at 4?C than at 22?C and 37?C. For clinical treatment, cell viability is required more than 80% when injected to patients [20]. When the cells RN-18 were stored at 4?C within 12?h, cell viability was more than 80%, in contrast, other temperatures such as 22?C and 37?C did not satisfy this range. At low temperatures, cells become quiescence which could play a role in increasing cell ...
Tensile Strength Test Machine HD-B604:Tensile Strength Test Machine is designed for quick and reliable tensile, compression, bending, shear, peel, loop tack and fatigue cycling on metals...
This course covers the basic tools and methods for generating meshes with Ansys ICEM CFD Tetra-Prism and HEXA and presents best-practice meshing techniques and tools.
Hello I am using ANSYS for structural ANALYSIS, I want to add PML or absorbing boundary condition in my simulation: I have a look at help of ansys, there is absorbing boundary for Electermagnetic domain , Structural fluid ,... I am not able to find the absorbing boundary condition only for structural domain . Please can sb help me to know that I can add absorbing boundary condition for structural domain in ANSYS? the second question:when I want to add complex value as an input how it will be possible in ANSYS, ...
A random selection of accounting firms from three regions is taken and they are asked to state the starting salary for a new accounting graduate. Do a one-way ANOVA to analyze these data using a 1% level of significance:.
Saint-Gobain® manufactures the largest seamless heat shrinkable rollcovers in the world featuring the best time-tested surface treatment available for maximum bond strength.
It is our objective at Instron to provide our customers the best ownership experience by delivering the highest quality products, expert support and world-class service.. ...
How do you define the allowable limits of a polymer? One suggestion I heard recently was to take the yield stress at a 10 % proof stess point and then
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TY - JOUR. T1 - Shear bond strength of the Tenure Solution dentin bonding system.. AU - Barkmeier, Wayne W.. AU - Cooley, R. L.. PY - 1989/10. Y1 - 1989/10. N2 - A liquid solution of an oxalate bonding system containing NTG-GMA and PMDM has become commercially available. The bond strength of this oxalate adhesive (Tenure Solution) to dentin was determined by bonding composite resin cylinders to extracted teeth. The bond strengths obtained in this study are compared to the bond strengths obtained in earlier studies with the first and second generation oxalate adhesives whose components were supplied as powders and required mixing. The oxalate solutions developed significantly higher bond strengths than the original powder type systems.. AB - A liquid solution of an oxalate bonding system containing NTG-GMA and PMDM has become commercially available. The bond strength of this oxalate adhesive (Tenure Solution) to dentin was determined by bonding composite resin cylinders to extracted teeth. The ...
TY - JOUR. T1 - Comparative evaluation of shear bond strength of two nanofilled posterior composites as core build up materials. T2 - An in vitro study. AU - Ganerhiwal, Shakshi. AU - Gupta, Chandni. AU - Kundabala, M.. AU - Ginjupalli, Kishore. AU - Shenoy, Ramya. PY - 2016/9/1. Y1 - 2016/9/1. N2 - Core build up is necessary as a foundation for post endodontic restorations when the tooth structure is severely damaged, fractured or extensively carious. Core build up material should provide resistance and retention form for the coronal restoration and possess sufficient strength to resist occlusal forces. An ideal core build-up material should have physical properties similar to those of tooth structure where the occlusal biting loads are transferred to dentin. The study evaluated and compared the shear bond strength of two nanofilled resin composites Group A - Filtek Z350 XT and Group B - Filtek Bulk fill) as core build up materials. Eighteen extracted permanent human molar teeth were sectioned ...
TY - JOUR. T1 - Glass-ionomer restoratives and liners. T2 - shear bond strength to dentin.. AU - Bell, R. B.. AU - Barkmeier, Wayne W.. PY - 1994. Y1 - 1994. UR - http://www.scopus.com/inward/record.url?scp=0028692912&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0028692912&partnerID=8YFLogxK. M3 - Article. C2 - 7803139. AN - SCOPUS:0028692912. VL - 6. SP - 129. EP - 134. JO - Journal of Esthetic and Restorative Dentistry. JF - Journal of Esthetic and Restorative Dentistry. SN - 1496-4155. IS - 3. ER - ...
Reed and wheat straw particleboards bonded with urea formaldehyde (UF) resin were manufactured from two different material configurations (i.e., fine and coarse particles). The board densities were in the range of 0.550-.90g/cm3. The effects of particle size and board density on the board properties were examined. The properties of particleboard produced from fine particles were better than those made from coarse particles. An increase in board density resulted in a corresponding improvement in the board properties. The properties of OF bonded reed and wheat straw particleboards were relatively lower than those of commercial particleboards. Three silane coupling agents were used to improve the bondability between the reed and wheat particles and OF resin. Results of this study indicate that all the board properties were improved by the addition of silane coupling agent. The degree of improvement achieved from each coupling agent was different; epoxide silane was found to be more effective for reed straw
Materials and Methods: Buccal enamel of 80 bovine teeth was submitted to finishing and polishing with metallographic paper to a refinement of #600, in order to obtain a 5-mm2 flat area. Blocks (2 x 4 x 4 mm) of laboratory composite resin were cemented to enamel according to different protocols: (1) untreated enamel + RelyX Unicem cement (RX group); (2) untreated enamel + Bifix SE cement (BF group); (3) enamel acid etching and application of resin adhesive Single Bond + RelyX Unicem (RXA group); (4) enamel acid etching and application of resin adhesive Solobond M + Bifix SE (BFA group). After 7 days of storage in distillated water at 37°C, the blocks were sectioned for obtaining microbar specimens with an adhesive area of 1 mm2 (n = 120). Specimens were submitted to the microtensile bond strength test at a crosshead speed of 0.5 mm/min. The results (in MPa) were analyzed statistically by ANOVA and Tukeys test ...
Protection products and armored products made of a fiber-reinforced composite material with a ceramic matrix, include a protection element for partial or complete absorption of at least one impact-like load focussed at a point. The protection element has a body having at least one dimension at least equal to 3 cm, in a direction perpendicular to a load to be absorbed. The body includes a fiber-reinforced composite material having a ceramic matrix with at least 10% by weight of silicon carbide and having reinforcing fibers. At least 5% by weight of the reinforcing fibers are carbon fibers and/or graphite fibers.
Introduction: Soldering has several applications in prosthodontic treatments; however, the effect of soldering on porcelain to metal bond strength has not been adequately studied. This study was designed to assess the bond strength of porcelain to metal, and the mode of failure at the soldered and non-soldered areas of cubic ...
Hair rebonding allows breakage of hair bonds, rearranging those bonds and restructures it once again to the desired, straight, state. Using a flat iron, the hair bonds are restructured and then applied with a neutralizing agent that will preserve the newly structured hair bonds.. The tool usedis a flat-iron to flatten/straighten the hair and relatively takes longer than relaxing.. The effect relatively takes longer than relaxing but is more lasting than relaxing and the results of hair rebonding will be a pin-straight, flat-out stick straight hair.. If you like the sleek, super straight look, then this option will be suitable for you. But to me, after many years (and many times!) of rebonding my hair, I find that it looks rather unnatural and closer to a broomstick effect than a healthy straight hair effect. ...
In determining the fracture toughness of a test specimen, standards currently require either locally-measured load-line displacements or clip gage displacements. In order to measure these parameters, secondary sensors generally need to be installed and calibrated, which often comes at a higher cost. As crosshead displacements are automatically measured in most modern material test machines, use of the crosshead measurements alone would be less expensive. Although much criticism exists on the accuracy of this approach in determining CTOD values, the method can still prove sufficiently accurate for many applications. The current paper aims to assess the magnitude of the errors that arise from using the crosshead displacement in fracture mechanics testing of steels with the Single Edge Notched Bending (SENB) specimen geometry. The results show that for steels with sufficiently large toughness, the use of the crosshead displacement to calculate J and convert to CTOD produces results within 10% of ...
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TY - JOUR. T1 - New residual stress detector using angle resolved Barkhausen noise. AU - Yamaguchi, Katsuhiko. AU - Imae, Kazuhito. AU - Nittono, Osamu. AU - Takagi, Toshiyuki. AU - Yamada, Koji. PY - 2011/7/4. Y1 - 2011/7/4. N2 - A new possibility of residual stress detector is proposed for iron based materials through measurement of angle resolved Barkhausen noise which is known as phenomena of dynamic magnetic process. It is important for keeping safety of our society to early detect metal fatigue, therefore the convenient residual stress detector will be available especially for machines including any robots given heavy loads.. AB - A new possibility of residual stress detector is proposed for iron based materials through measurement of angle resolved Barkhausen noise which is known as phenomena of dynamic magnetic process. It is important for keeping safety of our society to early detect metal fatigue, therefore the convenient residual stress detector will be available especially for ...
Кератинова трайно изправяща терапия - KERATIN STRAIGHTENING REBONDING SYSTEM KERATIN STRAIGHTENING REBONDING SYSTEM - Кератинова трайно изправяща терапия
Hello, I seek a TUTORIAL to simulate a cylindrical flow of a Newtonian fluid by ANSYS and ANSYS CFX FLEUNT. I tried with ANSYS FLUENT but I can not
The Woodlands, TX - October 5, 2012. Rigaku announces today the global release of the AutoMATE II, a highly accurate micro area residual stress analyzer. The AutoMATE II is an improved version of the AutoMATE, a popular residual stress analyzer in the Japanese automotive industry. The AutoMATE II is designed to ensure that the highest standards are met, as far as residual stress is concerned, in terms of part quality, reliability, durability and safety when automotive parts are designed or produced.1449876037
The New Weibull Handbook 4th edition written by Dr. Robert B. Abernethy shows the latest developments in Weibull analysis with examples that demonstrate the use of reliability software known as SuperSMITH, WinSMITH Weibull, WinSMITH Visual
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conventional VC mix design. The aggregate distribution of VC and SCC mixes was also different. The outcomes of the research study concluded on the similarity of the bond strength between VC and SCC beams for large bar diameters whereas the bond strengths for. ...
For i) I found the eigen values and eigen vectorsto be λ = 2,-2,0 and for λ= 2 the vector is [1,1,0] for λ= -2, [-1,1,0] and for λ= 0, [0,0,1]. Now in order to populate the principal stress tensor do I know which value goes where based on the vectors? Trying that I get {2,0,0;0,-2,0;0,0,0} is this correct ...
Crosshead extrusion process is widely used to coat wires and cables with a polymer. The basic procedure includes pulling of the wire / cable to be coated at a uniform rate via a crosshead die, where it is covered with the molten plastic. This extrusion process for coating is used in most wires and cables […]. ...
Gelest, Inc. has unveiled its new SIVATETM A610 activated amine functional silane, which improves adhesion, speeds reactivity and increases bond strength in packaging, polymer, micro-electronics and curing applicat
Did you know that the orthodontic patient who has missed one appointment, has had one loose bracket, and 4 broken brackets (that require rebonding), has just added an average of just under 7 months to their treatment time? ...
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Autopsy on a Lost Referendum by Sean Gabb (27th May 2016) Though we have nearly four weeks yet of campaigning, I find it hard to believe that the European Referendum will end in other than a crushing defeat for the Leave Campaign. For many on our side, this will be the end of their hopes.…
HellermannTyton standard cable ties feature inside serrations providing a positive hold onto wire and cable bundles. The head design guarantees high tensile strength, as well as a low insertion force. The bent tail design allows quick and simple install
T-Series Cable Ties feature inside serrations to provide a positive hold on wire and cable bundles. The head design guarantees high tensile strength and a low insertion force. The bent tail design allows quick and simple installations by hand. For high-vo
It is our objective at Instron to provide our customers the best ownership experience by delivering the highest quality products, expert support and world-class service.. ...
ANOVA -short for Analysis Of Variance- tests if 3+ population means are all equal or not. This easy introduction gently walks you through its basics such as sums of squares, effect size, post hoc tests and more.
See attached for proper formatting Assignment 2: Mixed Problems 1. In a one-way ANOVA, if the test is conducted and the null hypothesis is rejected, what does this indicate? (2 pts) A. All the population means are equal.
I find myself in the middle of a huge blowup between Max Keiser and Tom Woods over Mises, Menger and Austrian economics and feel that this is an opportune moment to express some doubts I have regarding contemporary Austrian methodology. I am to some extent an Austrian, on three counts. First, I subscribe to the notion that…
I find myself in the middle of a huge blowup between Max Keiser and Tom Woods over Mises, Menger and Austrian economics and feel that this is an opportune moment to express some doubts I have regarding contemporary Austrian methodology. I am to some extent an Austrian, on three counts. First, I subscribe to the notion that…
軟組織於生物力學上的軟硬性質之改變通常與其病理上之變化有關,而超音波彈性影像可用非侵入的方式量測軟組織局部的生物力學特性,因此可於臨床上評估軟組織的病變。然而,軟組織對超音波能量之衰減會降低超音波訊號之訊雜比,因而影響超音波彈性影像之品質。為提升影像的品質,可藉由編碼脈衝激發訊號增加超音波的平均功率以提升訊雜比與穿透深度,同時可配合適當之濾波器以維持一定水準之超音波軸向解析度。本研究發展啾聲編碼脈衝激發之超音波彈性成像系統,探討高斯(Gaussian)及塔基(Tukey)窗函數的啾聲編碼訊號與短脈衝對彈性影像品質之影響。本系統採用7.5 MHz單陣元探頭結合壓縮板的方式量測軟組織之彈性,並使用荷重元量測壓縮板下壓力量。軟組織的應變估計分別採用傳統的互相關(cross-correalstion)演算法與絕對值差(absolution ...
為了解我國學齡前幼兒,父母管教方式與幼兒氣質對幼兒問題行為表現之間的關係,乃以北區及中區之幼兒124人為研究對象,使用個人基本資料、家庭社經地位調查表、幼兒問題行為量表、父母管教方式量表及幼兒氣質量表等工具,獲得研究所需資料,再以描述性統計、T考驗、ANOVA、皮爾遜積差相關及多元逐步迴歸分析統計方法分析。本研究結果如下:一、父母給予幼兒較多的要求及較少的反應。二、幼兒的氣質表現為活動量小、適應度高、趨避性高、情緒強度低、注意力分散度低及堅持度高。三、幼兒的問題行為表現以「焦慮情緒」之問題行為較常出現,而以「消沈退縮」之問題行為較少出現。四、父母年齡為 41歲以上比父母未滿41歲者,幼兒表現出更多的整體問題行為,尤其在「社會攻擊」之問題行為方面。三、男幼兒比女幼兒表現出較多的整體問題行為
... biomechanical stress analysis and stable isotope analysis, combined with other archaeological data, seem to support this ... Studies of dental enamel hypoplasia are used to study child health. Unlike bone, teeth are not remodeled, so they can provide a ... "What can bones tell about labour and occupation : the analysis of skeletal markers of occupational stress in the Identified ... "The Use and Abuse of Trace Elelments for Paleodietary Analysis." Biogeochemical Approaches to Paleodietary Analysis. Eds. ...
Dejak, B; Młotkowski, A; Romanowicz, M. "Finite element analysis of stresses in molars during clenching and mastication". ... To provide the best treatment option the dental clinician must determine the level of activity and predict possible progression ... "Stresses at the cervical lesion of maxillary premolar-a finite element investigation". Journal of Dentistry. 30 (7): 283-90.. ... If teeth come together in a non-ideal bite the researchers state that this would create further stress in areas on the teeth.[ ...
... supplemented by browsing during stressed periods. Dental wear patterns of specimens from the late Middle and Late Pleistocene ... A finite element analysis of the antlers suggested that during fighting, the antlers were likely to interlock around the middle ... A stable isotope analysis of the terminal Pleistocene Irish population suggests a grass and forb based diet, ... most other phylogenetic analyses support that their closest living relatives are fallow deer (Dama dama). The first scientific ...
Microarray analysis has shown that de novo CNVs occur at a significantly higher rate in sporadic cases of autism as compared to ... Prenatal stress, consisting of exposure to life events or environmental factors that distress an expectant mother, has been ... The principal source of human exposure to organic mercury is via fish consumption and for inorganic mercury is dental amalgams ... A meta-analysis published in 2007 concluded that there was no link between mercury and autism. This theory hypothesizes that ...
Russian has five or six vowels in stressed syllables, /i, u, e, o, a/ and in some analyses /ɨ/, but in most cases these vowels ... Belarusian ць, дзь, or Polish ć, dź). The sounds /t, d, ts, s, z, n, rʲ/ are dental, that is, pronounced with the tip of the ... The standard language, based on the Moscow dialect, possesses heavy stress and moderate variation in pitch. Stressed vowels are ... Stress, which is unpredictable, is not normally indicated orthographically though an optional acute accent may be used to mark ...
Controversially, analyses suggest that all nouns end in an underlying consonant phoneme. Nouns apparently ending in a vowel ... Also, the voiceless stops are slightly aspirated at the onset of words and before stressed syllables, behaving like English ... is pronounced as a voiceless dental fricative [θ]: /ɬ/→[θ]. The voiceless labiodental fricative /f/ is pronounced as a ...
Dental analyses showed no sign of periods of decay or arrested development, even where there was "considerable wear", ... The variation in musculoskeletal stress markers may indicate a mobile lifestyle for at least some of the males analysed. ... Whittle and Wysocki conclude, from the skeletal and dental analyses, that the lifestyles of the people who were to be interred ... However, analysis of the human remains found at Parc Cwm long cairn show the people interred in the cromlech continued to be ...
In 2021, Antonio Ballell and Humberto Ferrón used Finite Element Analysis modeling to examine the stress distribution of three ... an artificial dental formula was put together for megalodon in 1996. The dental formula of megalodon is: 2.1.7.43.0.8.4. As ... However, an analysis of the distribution of megalodon over time suggests that temperature change did not play a direct role in ... Shimada stated that the previously proposed methods were based on a less-reliable evaluation of the dental homology between ...
... has been used for a variety of stress analyses and even for routine use in design, particularly before the ... A new method for studies of clinical mechanics in prosthetic dentistry Dental Materials, 2003, 19-2, pp. 106-117. D. Bigoni and ... Dally, J.W. and Riley, W.F., Experimental Stress Analysis, 3rd edition, McGraw-Hill Inc., 1991 Ramesh, K., Digital ... The loading is then applied in the same way to ensure that the stress distribution in the model is similar to the stress in the ...
Disyllabic words are when the stress is placed on the final syllable. Polysyllabic words are when the stress is moved to the ... Analyses of this were given by Kisseberth (1970), Phelps (1973, 1975) and Noske (1993). The Tonkawa language is a syllabic ... vary freely between dental and postalveolar articulations, i.e. [ts~tʃ] and [s~ʃ]. There is a tendency for [ʃ] to occur at the ... Linguistic Analysis 1, 137-172. "The Tonkawa Language: Pronunciation Key". Retrieved October 12, 2005. The Tonkawa Language, ...
Analysis of bone stress markers in populations of the Middle and Late Holocene of the Bogotá savanna, Colombia. Revista ... Datación de esmalte dental prehispánico proveniente del sitio arqueológico Checua (Cundinamarca) por resonancia paramagnética ... Analysis of the various stratigraphic levels and the tools found, led to the identification of four zones of human occupation ...
Some analyses using only dental and mandibular characters (the first analysis of Gao et al., 2010, Meng, Wang & Li, 2011, ... 2010) stressed that jeholodentids and gobiconodontids are the only eutriconodonts with known postcranial skeletons; according ... The analysis conducted by Luo et al. (2007) and the second analysis of Gao et al. (2010), involving a broader range of Mesozoic ... some other analyses of dental and mandibular characters (Gaetano and Rougier, 2011, 2012) did recover gobiconodontids as ...
Hsu, H. Y.; Chen, S. H.; Yu, H. Y.; Lou, J. H. (2010). "Job stress, achievement motivation and occupational burnout among male ... A meta-analysis". Clinical Psychology Review. 28 (6): 1021-1037. doi:10.1016/j.cpr.2008.02.007. ISSN 0272-7358. PMID 18410984. ... The Journal of the American Dental Association. 135 (6): 788-794. doi:10.14219/jada.archive.2004.0279. PMID 15270165. S2CID ... Ergophobia is a corollary of Occupational Burnout, which is thought to be the result of long-term unresolvable job stress. The ...
In 2012, MetLife failed the Federal Reserve's (the Fed's) Comprehensive Capital Analysis and Review stress test, intended to ... Dental[edit]. MetLife offers group dental benefit plans for individuals, employees, retirees and their families and provides ... MetLife's dental PPO network included over 135,000 participating dentist locations nationwide while the dental HMO network ... "MetLife Adds 5 Quality Resource Guides to Dental Continuing Education Program". Health & Beauty Close-Up. September 2010.. ...
The Cochrane analysis of screening indicates that it is "not clear whether screening does more good than harm". According to ... These core biopsies require only local anesthesia, similar to what would be given during a minor dental procedure. The use of ... Additionally, 200 women will suffer from significant psychological stress due to false positive results. Newman points out that ... A meta-analysis review of programs in countries with organized screening found a 52% over-diagnosis rate. As a medical ...
Analysis of bones and dental traits of these women have led archaeologists to believe these individuals were not from the same ... consumption in the bones and cartilage of the women as well as pathologies indicative of poor health and nutritional stress; ... Non-metric dental traits have suggested that these individuals were not from the Cahokia area and were possibly immigrants new ... Radiocarbon dating and ceramic analysis of sherds found in the mound place its beginning construction date to the Lohmann Phase ...
Dental Anthropology Journal 20 (2/3):29-32. R.S. Corruccini, I. Shimada, K. Shinoda. 2002. Dental and mtDNA Relatedness Among ... Genetic Analysis of Occlusal Variation in Twins. American Journal of Orthodontics and Dentofacial Orthopedics 78:140-154. B.A. ... Enamel Hypoplasias Related to Famine Stress in Living Chinese. Human Biology 10 (6):723-733. R.S. Corruccini, R.M. Beecher. ... Quantification of Dental Occlusal Variation: A Review of Methods. 2008. Dental Anthropology Journal 21 (1):1-11. R.S. ...
Notes: Among the dental fricatives, ⟨θ ð⟩ are slit fricatives (non-sibilant) while ⟨s̯ z̯⟩ are sulcalized (sibilant). Most ... Diphthongs are e.g. ⟨ai⟩ or ⟨ay⟩, depending on phonological analysis. Nasal vowels are e.g. ⟨ą⟩. Long vowels are e.g. ⟨a꞉⟩. A ... Acute and grave accents over vowels for stress John Wesley Powell used an early set of phonetic symbols in his publications ( ... The fronting diacritic may be a caret rather than an inverted breve, e.g. dental ⟨ṱ⟩ and palatal ⟨k̭⟩. Many researchers use ...
... with a basic understanding of veterinary and dental medicine. General healthcare and emergency healthcare are stressed in ... The Pineland Area Study will be used as the basis for analysis allowing for a comprehensive understanding of the training ... Butler sued the US government for $5 million for "emotional distress" and "post-traumatic stress disorder" as a result of ... The acronym PMESII-PT refers to a form of environmental analysis to examine the aspects of political, military, economic, ...
"Acupuncture for the Treatment of Adults with Posttraumatic Stress Disorder: A Systematic Review and Meta-Analysis". Journal of ... The Journal of Evidence-Based Dental Practice. 12 (1): 2-4. doi:10.1016/j.jebdp.2011.12.001. PMID 22326146. La Touche R, ... Wetterslev J, Jakobsen JC, Gluud C (March 2017). "Trial Sequential Analysis in systematic reviews with meta-analysis". BMC ... One meta-analysis found that acupuncture for chronic low back pain was cost-effective as an adjunct to standard care, while a ...
"Polymerization shrinkage and contraction stress of dental resin composites". Dental Materials. 21 (12): 1150-7. doi:10.1016/j. ... Heintze, S. D.; Rousson, V. (2012). "Clinical effectiveness of direct class II restorations - a meta-analysis". The Journal of ... patients with poorer dental health (possibly due to poor dental hygiene, diet, genetics, frequency of dental checkups, etc.) ... Medicine portal Dental restorative materials Dental bonding Dental sealants Robert G. Craig, Dieter Welker, Josef Rothaut, ...
Zadik, Y (2006). "Dental Fractures on Acute Exposure to High Altitude". Aviation, Space, and Environmental Medicine. 77 (6): ... November 2005). "Cancer incidence among male military and civil pilots and flight attendants: an analysis on published data". ... and work-related stress. 1% rule (aviation medicine) Aerospace Medical Association American Board of Preventive Medicine ... Zadik, Y; Chapnik, L; Goldstein, L (2007). "In-Flight Barodontalgia: Analysis of 29 Cases in Military Aircrew". Aviation, Space ...
Investigations of dental cement and bone showed that as a young man he had suffered at least two phases of stress and signs of ... A strontium isotope analysis of three of his molars showed that he had most probably lived in the Basel area until the age of ... As analyses of the arm and clavicle bones showed, Theo was most likely a right-handed craftsman. Theo died too young; the life ... But the analysis of his DNA showed that there was no relationship. Another candidate was removed from the list with certain ...
"Investigating the running abilities of Tyrannosaurus rex using stress-constrained multibody dynamic analysis". PeerJ. 5: e3420 ... Crispian Scully, (2002) Oxford Handbook of Applied Dental Sciences, Oxford University Press -. ISBN 978-0-19-851096-3 P156 ... Since stress fractures are caused by repeated trauma rather than singular events they are more likely to be caused by regular ... Below is the cladogram of Tyrannosauridae based on the phylogenetic analysis conducted by Loewen et al. in 2013.[60] ...
Primary stress will be on the main syllable, whilst the secondary stress will be on every alternate preceding syllable. Stress ... In this language, there are four fricatives, but in particular we can look at the dental fricative /z/ which has been recorded ... hence an analysis of two separate phonemes rather than a unit phoneme is required. The vowel phonemes in Longgu are: In Longgu ... The stress on both of these pronouns is on the first syllable (nga-ia and ga-oa). Furthermore, voiced stops may only occur in ...
The frequency of oral hemorrhage by location in people with deficiency of F VIII and F IX is: gingiva, 64%; dental pulp, 13%; ... In angiodysplasia, a form of telangiectasia of the colon, shear stress is much higher than in average capillaries, and the risk ... In cases of suspected acquired von-Willebrand syndrome, a mixing study (analysis of patient plasma along with pooled normal ... Detection of VWD is complicated by VWF being an acute-phase reactant with levels rising in infection, pregnancy, and stress. ...
However, analysis of grave furnishing, size and deepness of grave pits, position within the cemetery, did not lead to any ... Examining dental characteristics that have been independently shown to correlate with genetic relatedness, she found that only ... which stressed cultural continuity. Anti-migrationist authors either paid little attention to skeletal evidence or argued that ... More recent analyses of the "Beaker phenomenon", published since the 2000s, have persisted in describing the origin of the " ...
2019). "Dental caries in human evolution: frequency of carious lesions in South African fossil hominins". bioRxiv. doi:10.1101/ ... Based on carbon isotope analyses, A. africanus had a highly variable diet which included a notable amount of C4 savanna plants ... A. africanus facial anatomy seems to suggest adaptations for producing high stress on the premolars, useful for eating small, ... A. africanus had a fast, apelike dental development rate. According to Clarke, the older "A. prometheus" is distinguished by ...
Ernst, E. (2008). "Placebo and other Non-specific Effects". In Ernst, E. (ed.). Healing, Hype, or Harm? A Critical Analysis of ... Counseling stress therapies, hypnotherapy, Meditation, Reflexology, Shiatsu, Ayurvedic medicine, Nutritional medicine, and Yoga ... An analysis of the conclusions of only the 145 Cochrane reviews was done by two readers. In 83% of the cases, the readers ... An analysis of trends in the criticism of complementary and alternative medicine (CAM) in five prestigious American medical ...
Edelstein B. Barriers to Medicaid Dental Care. Washington, DC: Children's Dental Health Project. 2000. CDHP.org ... this contract cost millions in damages and created a great amount of stress for those who relied on welfare programs such as ... "State Medicaid Expansions and Mortality, Revisited: A Cost-Benefit Analysis" (PDF). American Journal of Health Economics. 3 (3 ... but dental care utilization for this population is low. The reasons for low use are many, but a lack of dental providers who ...
... thermal analysis, electron microscope analysis, etc. Structure is studied at various levels, as detailed below. ... Biomaterials are also used every day in dental applications, surgery, and drug delivery. For example, a construct with ... Engineering ceramics are known for their stiffness and stability under high temperatures, compression and electrical stress. ... Materials science is also an important part of forensic engineering and failure analysis - investigating materials, products, ...
Hazard analysis. *Job safety analysis. *Risk assessment. *Risk control *Hierarchy of hazard controls ...
These include dentists and dental surgeons, dental assistants, dental auxiliaries, dental hygienists, dental nurses, dental ... Other stressors include the emotional labor of caring for ill people and high patient loads. The consequences of this stress ... As of early 2011, the Ministry was conducting research and costing analyses to determine the most appropriate attraction and ... Dental assistant on the right supporting a dental operator on the left, during a procedure. ...
2013). Mosby's Dental Drug Reference - E-Book (11 ed.). Elsevier Health Sciences. pp. Appendix H, e83. ISBN 978-0323172264. .. ... "Drug Testing and Analysis. 8 (3-4): 357-69. doi:10.1002/dta.1849. PMID 26391406.. ... "In Hobfoll, Stevan E.; De Vries, Marten W. (eds.). Extreme stress and communities: impact and intervention. Boston: Kluwer ... 2013). Mosby's Dental Drug Reference - E-Book (11 ed.). Elsevier Health Sciences. ISBN 978-0323172264. .. , Appendix H, e83; ...
However, his later analysis rejects this. When two morphemes both with a primary stress in each morpheme are concatenated ... The dental consonants /t, d, n, l, ɬ/ are phonetically denti-alveolar. In some speakers, /pʰ/ may have an assimilated bilabial ... The 1936 analysis does not mark tone. Later analyses posit glottal stops /ʔ/ before otherwise vowel-initial words, thus the ... All words must have a single primary stress. Polysyllabic words can, in addition to the syllable with primary stress, have ...
Prenatal maternal psychological stress and childhood asthma and wheezing: a meta-analysis.»։ The European respiratory journal ... Thomas MS, Parolia A, Kundabala M, Vikram M (June 2010)։ «Asthma and oral health: a review»։ Australian Dental Journal 55 (2): ... A meta-analysis of randomized trials»։ Am J Emerg Med 24 (2): 217-22։ 2006։ PMID 16490653։ doi:10.1016/j.ajem.2005.10.008 , ... Stress and inflammation in exacerbations of asthma»։ Brain Behav Immun. 21 (8): 993-9։ 2007։ PMC 2077080։ PMID 17493786։ doi: ...
"Academy of Dental Sleep Medicine. 2008. Retrieved 2008-07-22.. *^ "About the ADBSM". American Board of Dental Sleep Medicine. ... "Meta-analysis: melatonin for the treatment of primary sleep disorders". www.crd.york.ac.uk. Retrieved 2016-03-08.. ... emotional stress, anxiety, depression) or underlying health condition (i.e., asthma, diabetes, heart disease, pregnancy or ... "Dental Press Journal of Orthodontics. 19 (6): 54-61. doi:10.1590/2176-9451.19.6.054-061.oar. ISSN 2176-9451. PMC 4347411 . PMID ...
2015). Clinical and Organizational Applications of Applied Behavior Analysis. Academic Press. p. 461. ISBN 978-0-12-420249-8. . ... Dental fear, odontophobia - fear of dentists and dental procedures. *Dentophobia - fear of dentists ...
Hazard analysis. *Job safety analysis. *Risk assessment. *Risk control *Hierarchy of hazard controls ...
The spasticity can and usually does lead to a very early onset of muscle stress symptoms like arthritis and tendinitis, ... Dental problems can also contribute to difficulties with eating.[28] Pneumonia is also common where eating difficulties exist, ... a systematic review and meta-analysis". Developmental Medicine & Child Neurology. 55 (6): 509-19. doi:10.1111/dmcn.12080. PMID ... An individual participant data meta-analysis". PLOS Medicine. 14 (10): e1002398. doi:10.1371/journal.pmed.1002398. PMC 5627896 ...
Besides a family history of the disease, only a laboratory analysis can provide final confirmation. In this analysis, it is ... In hereditary angioedema, often no direct cause is identifiable, although mild trauma, including dental work and other stimuli ... The triggers can vary and include infections, minor injuries, mechanical irritation, operations or stress. In most cases, edema ...
Hazard analysis. *Job safety analysis. *Risk assessment. *Risk control *Hierarchy of hazard controls ... Stress exposure training. Organisations. *European Underwater Federation (EUF). *International Diving Regulators and Certifiers ...
R.H. Haveman (2001). "Poverty: Measurement and Analysis," International Encyclopedia of the Social & Behavioral Sciences, pp. ... hospitals and subsidized medical and dental care. By 1960 New Zealand was able to afford one of the best-developed and most ... Stress. *Rural access issues. *Providing Urban Amenities to Rural Areas. *Post-materialism ...
If disease is identified through this process, then a full periodontal analysis is performed, often by dental hygienists, oral ... Stress - Various studies have demonstrated that individuals under psychological, ongoing chronic stress are more likely to have ... An Oral Health Therapist is a member of the dental team who is dual qualified as a Dental Hygienist and Dental therapist. They ... The minimum qualification required for the M.D.S. degree is a Bachelor of Dental Surgery. A majority of dental schools in India ...
Attaining self-sufficiency in agriculture has shifted the focus of the strategies towards small and medium farming, stress on ... A practical Sanskrit dictionary with transliteration, accentuation, and etymological analysis throughout. London: Oxford ... Multan Medical and Dental College, Multan. *Lahore Garrison University, Lahore[91]. CultureEdit. ...
Institute for the Analysis of Global Security (IAGS). Archived from the original (PDF) on 11 October 2010. Retrieved 18 October ... Exposure to these can lead to a wide range of negative health outcomes such as cancer, respiratory issues, dental loss ... Infrared lasers, chemical reducing agent, decoy flares, stainless steel, stress gauges, nuclear medicine, monitoring ... Further spectroscopic analysis between 1886 and 1901 of samaria, yttria, and samarskite by William Crookes, Lecoq de ...
"Cellular Stress Responses: Cell Survival and Cell Death". International Journal of Cell Biology. 2010: 214074. doi:10.1155/ ... Hazard analysis. *Job safety analysis. *Risk assessment. *Risk control *Hierarchy of hazard controls ...
Cloning and sequence analysis of the human salivary peroxidase-encoding cDNA. . In: Gene. . 173, Nr. 2, September 1996, S. 261- ... Patentanmeldung WO1988002600: Enzyme-containing bactericidal composition, and dental and wound treatment preparations ... The metabolism of 17 alpha-estradiol by lactoperoxidase: a possible source of oxidative stress in breast cancer. . In: ... Effects of a lactoperoxidase-system-containing toothpaste on dental plaque and whole saliva in vivo. . In: Acta Odontol Scan. ...
Bobadilla JL, Macek M, Fine JP, Farrell PM (June 2002). "Cystic fibrosis: a worldwide analysis of CFTR mutations-correlation ... Pankhurst CL, Philpott-Howard J (April 1996). "The environmental risk factors associated with medical and dental equipment in ... "Oxidative stress & male infertility". Indian J. Med. Res. 129 (4): 357-67. PMID 19535829. http://www.icmr.nic.in/ijmr/2009/ ... survival analysis of the cystic fibrosis foundation patient registry.". Annals of internal medicine 161 (4): 233-41. . PMID ...
Hazard analysis. *Job safety analysis. *Risk assessment. *Risk control *Hierarchy of hazard controls ...
History of dental restorations,[46] use of dental appliances, or oral exposure to substances that may cause oral lichenoid ... Stress is thought to play a role in the pathogenesis of oral LP. Patients with anxiety and depression are reported more ... An evidence-based medicine analysis of efficacy". Archives of Dermatology. 134 (12): 1521-30. doi:10.1001/archderm.134.12.1521 ... "IOSR Journal of Dental and Medical Sciences. 12: 61-69. doi:10.9790/0853-1216169.. ...
"Medicine (Baltimore) (Meta-Analysis). 94 (38): e1612. doi:10.1097/MD.0000000000001612. PMC 4635766 . PMID 26402826.. ... Major theories include surgery, pregnancy, infection and emotional stress.[56]. The eating of gluten early in a baby's life ... dental enamel defects and with diagnose of Down syndrome or Turner syndrome.[22] ... Burger JP, de Brouwer B, IntHout J, Wahab PJ, Tummers M, Drenth JP (April 2017). "Systematic review with meta-analysis: Dietary ...
Stress[edit]. Stress is not phonologically distinctive[251] and is determined by the word's syllable structure. Hence, ... a b c Habash, N., Rambow, O., & Kiraz, G. (2005, June). Morphological analysis and generation for Arabic dialects. In ... Dental/Alveolar Palatal Velar Uvular Pharyngeal Glottal plain emphatic plain emphatic plain emphatic ... Analyses, Théorie, 3, 1-39. *^ Heath, J. (1997). Moroccan Arabic phonology. Phonologies of Asia and Africa (including the ...
Sun K, Liu JM, Sun HX, Lu N, Ning G (October 2012). "Bisphosphonate treatment and risk of esophageal cancer: a meta-analysis of ... Osteonecrosis of the jaw (deterioration of the temporomandibular joint or TMJ) may occur while on this drug, if dental work of ... Kwek EB, Goh SK, Koh JS, Png MA, Howe TS (February 2008). "An emerging pattern of subtrochanteric stress fractures: a long-term ... Esophageal cancer, a meta-analysis concluded that bisphosphonate treatment is not significantly associated with excess risk of ...
... a systematic review and meta-analysis". The Lancet. 364: 1329-1333. doi:10.1016/S0140-6736(04)17189-4. PMID 15474135.. ... a systematic analysis for the Global Burden of Disease Study 2015". Lancet. 388 (10053): 1545-1602. doi:10.1016/S0140-6736(16) ... a systematic analysis for the Global Burden of Disease Study 2015". Lancet. 388 (10053): 1459-1544. doi:10.1016/s0140-6736(16) ... Stress exposure training. Organisations. *European Underwater Federation (EUF). *International Diving Regulators and Certifiers ...
... needs extra strength due to its heavy exposure to physical stress. It has a layer of tiny hexagonal plates called "tesserae", ... "A periodic pattern generator for dental diversity". BMC Biology. 6: 32. doi:10.1186/1741-7007-6-32. PMC 2496899. PMID 18625062 ... "A novel classification of planar four-bar linkages and its application to the mechanical analysis of animal systems" (PDF) ... "Journal of Dental Research. 49 (3): 556-60. doi:10.1177/00220345700490031501. PMID 5269110.. ...
a b c Art Carden and Christopher J. Coyne, "An Unrighteous Piece of Business: A New Institutional Analysis of the Memphis Riot ... The University of Tennessee College of Dentistry was founded in 1878, making it the oldest dental college in the South, and the ... The rapid demographic changes, added to the stress of war and occupation, and uncertainty about who was in charge, resulted in ...
... ... The analysis results show that an increase in the Young?s moduli for the cancellous and cortical bone yields elevated stress ... The methodology and analysis techniques employed to enable accurate modelling of the implant and bone systems are discussed in ... Thinner cortical bone results in elevated stress levels within itself as well as in the cancellous bone. In both cancellous and ...
Full text: Available Index: WPRIM (Western Pacific) Main subject: Tooth / Bite Force / Finite Element Analysis / Dental Enamel ... A finite element analysis was performed to predict stress distribution generated by occlusal loading. RESULTS:. Restorations ... Stress distribution of molars restored with minimal invasive and conventional technique: a 3-D finite element analysis ... This study aimed to analyze stress distribution and maximum von Mises stress generated in intracoronal restorations and in ...
Photoelastic Stress Analysis of Mandibular Fixed Prostheses Supported by 3 Dental Implants. Simamoto Júnior, Paulo Cézar; da ... Is It Safe to Reuse Dental Implant Healing Abutments Sterilized and Serviced by Dealers of Dental Implant Manufacturers? An In ... Knowledge, Attitudes, and Perceptions of Undergraduate Dental Students Toward Dental Implants-An All India Survey. Chaudhary, ... Decontamination Methods Using a Dental Water Jet and Dental Floss for Microthreaded Implant Fixtures in Regenerative ...
Dental press j. orthod. (Impr.) Journal subject: Orthodontics Year: 2014 Type: Article Affiliation country: Brazil ... Analysis was qualitative and observed stress location and pattern on both models analyzed. CONCLUSIONS:. Results identified ... Photoelastic analysis of stress generated by wires when conventional and self-ligating brackets are used: A pilot study ... Photoelastic analysis of stress generated by wires when conventional and self-ligating bra ...
Dental Implants* * Dental Materials / chemistry* * Dental Stress Analysis * Humans * In Vitro Techniques ... Purpose: This study evaluated the effect of LTD on four types of Zirconia dental implants at 0, 30, and 60 years of artificial ... Keywords: Zirconia dental implant; accelerated aging; low temperature degradation; micro cracks; t-m transformation. ... Materials and methods: Accelerated aging at 15 and 30 hours, approximating 30 and 60 years in vivo, aged 36 Zirconia dental ...
Analysis of Variance. Composite Resins*. Dental Restoration, Permanent. Dental Stress Analysis. Humans. Image Processing, ... Previous Document: Analysis of postoperative symptoms following surgical endodontic treatment.. Next Document: Effect of ... Minnesota Dental Research Center for Biomaterials and Biomechanics, Department of Oral Science, University of Minnesota School ... The present study proposed measuring band displacement as an in vitro methodology to determine the packability of dental ...
Dental Stress Analysis. Denture Retention*. Denture, Complete*. Denture, Complete, Lower. Denture, Complete, Upper. Female. ... Analysis of subjective evaluations indicated that the test adhesive was perceived as having effected: (1) improved chewing ... 22088584 - Investigations of botanicals on food intake, satiety, weight loss and oxidative stress:.... 10690164 - The effect of ...
Stress is known to change the secretion of ovarian steroid hormones via the hypothalamic-pituitary-ovarian (HPO) axis. Noxious ... Dental Stress Analysis. The description and measurement of the various factors that produce physical stress upon dental ... Stress Stress is caused by your perception of situations around you and then the reaction of your body to them. The automatic ... stress-induced inhibition of ovarian estradiol secretion.". Stress is known to change the secretion of ovarian steroid hormones ...
The Dental and Pharmaceutical Benefits Agency. TLV. Health economics URL: http://www.tlv.se/In-English/medicines-new/health- ... Main Outcome and Sensitivity Analysis. In Table 3, we illustrate the ICERs for the base case and the sensitivity analysis. In ... Mobile App for Treatment of Stress Urinary Incontinence: A Cost-Effectiveness Analysis. ... SUI: stress urinary incontinence. Edited by G Eysenbach; submitted 23.01.17; peer-reviewed by G Rortveit, A Wagg; comments to ...
Three dimensional finite element stress analysis of different cemented post core assemblies for ElSharawi Amr Mohamed Rabieh ... Dental Materials Cataloging Source. a)EG-EULC c)EG-EULC. ISBN. DDC No.. 11312021. ... Three dimensional finite element stress analysis of different cemented post core assemblies for ElSharawi Amr Mohamed Rabieh * ... Three dimensional finite element stress analysis of different cemented post core assemblies for ElSharawi Amr Mohamed Rabieh ...
Risk-analysis; Skeletal-stress; Work-analysis; Worker-health; Author Keywords: Ergonomics; cumulative trauma disorders; ... Dental hygienists report even higher rates, from 54-83% for neck and 35-76% for shoulder, and dental assistants in between (38- ... The prevalence of and risk factors for neck and shoulder disorders among dental practitioners (dentists, dental hygienists, and ... musculoskeletal disorders; dental hygienists; dental assistants; risk factors; neck and shoulder disorders ...
Dental Stress Analysis. 2. 2003. 50. 0.090. Why? Cytoskeletal Proteins. 2. 2004. 1432. 0.090. Why? ...
Stress Analysis for Different Designs of Implant-borne and Tooth-implant Fixed Partial Dentures in Mandibular Posterior Region ... Challenges to Digital Dentistry in Dental Schools By: Ilser Turkyilmaz, Samantha Lakhia VOLUME 20 , ISSUE 12 The Journal of ... Relation between Knowledge, Attitude and Practice of Hepatitis B among Dental Undergraduates in the Kingdom of Saudi Arabia By ... In Vitro Analysis of Licorice (Glycyrrhiza glabra) Root Extract Activity on Streptococcus mutans in Comparison to Chlorhexidine ...
2009 Multiscale analysis of stress distribution in teeth under applied forces. Dent. Mater. 25, 67-730. doi:10.1016/j.dental. ... More recently, a stress-strain analysis of complete scaffolds has been performed to investigate the state of stress and strain ... 4. Finite-element analysis in tissue engineering. Finite-element analysis was first used in tissue engineering for the design ... 5.2)where σα is the partial stress; qα is the body force per unit mass; πα is the rate of momentum supply to the αth ...
Odontology : Official journal of the Society of the Nippon Dental University = 歯学 Odontology : Official journal of the Society ... Finite element analysis to compare stress distribution of connector of lithia disilicate-reinforced glass-ceramic and zirconia- ... Failure of All-ceramic Fixed Partial Dentures in vitro and in vivo : Analysis and Modeling KELLY J.R. , TESK J.A. , SORENSEN J. ... Fracture Surface Analysis of Clinically Failed Fixed Partial Dentures TASKONAK B. , MECHOLSKY J. J. Jr. , ANUSAVICE K. J. ...
Our consultants for Finite Element Analysis for Medical Devices & Biomaterials address complex computational projects required ... Analysis of bone stress and resorption surrounding dental implants *Development of models to analyze fracture fixation and ... In depth analysis of patient and intraoperative factors on eye function is a common focus of analysis, including considerations ... Results from these analyses, combined with data from our retrieval collection and cadaveric spine simulator, provide valuable ...
Dental Materials / chemistry* * Dental Prosthesis Design * Dental Restoration Failure* * Dental Stress Analysis / ...
For the purpose of salivary oxidative stress analyses saliva samples should be collected before dental hygiene treatment or ... Biochemical Analysis of Oxidative and Carbonyl Stress Markers in Saliva. All reagents or chemicals used in our experiments were ... Figure 6: The effect of blood leakage after dental hygiene treatment on markers of oxidative stress and antioxidant status in ... In study II the effect of microinjury on salivary markers of oxidative stress before and after dental hygiene was determined ...
The reactions to the external loads on the dental organs depend on the advances of the carious lesion that they present, since ... the distribution of stresses is different in a healthy tooth. ... With the analyses performed, it is possible to observe that the ... That is why computational mechanobiological analysis at the tissue level using the finite element method is very useful to ... In the present work, through the use of high-fidelity biomodels, computational mechanobiological analyses were performed on ...
The Second Department of Oral and Maxillofacial Surgery, Osaka Dental Universty (2014 from CiNii) ... and Physical Analysis of Bioabsorbable Osteosynthetic Plates Postoperatively (2003) ... The First Department of Oral and Maxillofacial Surgery, Osaka Dental University (1987 from CiNii) ... The First Department of Oral and Maxillofacial Surgery, Osaka Dental University (1987 from CiNii) ...
Optimized Dental Implant Fixture Design for the Desirable Stress Distribution in the Surrounding Bone Region: A Biomechanical ... PD-L1 expression in gastric cancer determined by digital image analyses: pitfalls and correlation with pathologist ... Retrospective Chronologic Computed Tomography Analysis of Bone Flap Fusion and Resorption After Craniotomy and Autologous ...
Topics include the systematic use of cell-matrix control volumes; the role of stress analysis in the design process; anatomic ... Student project materials are drawn from orthopedic devices, soft tissue implants, artificial organs, and dental implants. ...
The role of stress analysis in the design process. Anatomic fit: shape and size of implants. Selection of biomaterials. ... Project materials drawn from orthopedic devices, soft tissue implants, artificial organs, and dental implants.. en_US. ...
Results:Statistical analysis indicated no significant difference in leakage among groups (p,0.05) with 4.12×10^-4 (Panavia self ... Keywords: Filtration - methods, Dental Stress Analysis - methods, Coloring Agents - chemistry, Resin Cements - pharmacology ... Results: Statistical analysis indicated no significant difference in leakage among groups (p,0.05) with 4.12×10^-4 (Panavia ...
A stress analysis of the periodontal ligament under various orthodontic loadings. Eur J Orthod 1991;13(3):231-242. ... Three-dimensional finite element analysis for stress in the periodontal tissue by orthodontic forces. Am J Orthod 1987;92(6): ... Effect of Three-wall Bony Defect along Various Root Surfaces on Position of Center of Resistance: A 3D Finite Element Analysis ... Evaluation of stress on tooth and periodontium with varying degree of bone support on orthodontic force application: A 3D ...
The effect of a hydroxyapatite-reinforced polyethylene stress distributor in a dental implant on compressive stress levels in ... Qualitative analyses for von Mises stresses in the mechanical part of the models are shown in Figure 3. Stresses were ... The von Mises stresses evaluated the bar, screw and the implant; maximum principal, minimum principal and shear stress analyses ... Qualitative Principal stress and shear stress in the peri-implant bone tissue are shown in Figure 4. The stresses were ...
The stress distribution varied together with different occlusal contacts.The stress level at the apical third of the tooth ... different post-core systems and the stress distribution of residual tooth structure.Methods:By SCT scanning,a three dimensional ... Stress Analysis of Restored Damaged Maxillary Central Incisor[J];Journal of Dental Prevention and Treatment;2010-12. ... Three-dimensional finite element analysis of the material and occlusal contact on dentinal stress distribution. ...
Finite Element Analysis of Stress in Maxillary Dentition during En-masse Retraction with Implant Anchorage ... Edited and published by : Tokyo Dental College, Japan Produced and listed by : Tokyo Dental College, Japan ... Dental Implant Treatment with Computer-assisted Surgery for Bilateral Agenesis of Maxillary Lateral Incisors: A Case Report ... Parental Satisfaction with Ambulatory Anesthesia during Dental Treatment for Disabled Individuals and Their Preference for Same ...
Dental Press Journal of Orthodontics. versão impressa ISSN 2176-9451. Dental Press J. Orthod. vol.19 no.5 Maringá sept./out. ... Photoelastic analysis of internal stresses in the periodontium created by occlusal forces. J Periodontol. 1970;41(1):30-5. [ ... Analysis was qualitative and observed stress location and pattern on both models analyzed. ... Upon comparing the stress between models, a greater amount of stress was found in the model with conventional brackets in all ...
Tissue analyses revealed presence of oxidative stress, high extracellular and intracellular Ti levels and imbalanced bone ... in vivo analysis of peri-implant Ti particle distribution, histological, and molecular analyses were performed. Ti particles ... Although it represents a common complication of dental implant treatments, the underlying mechanisms have not yet been fully ... Oral Surgery and Implantology, Valencia University Medical and Dental School, 46004 Valencia, Spain. [email protected] ...
  • Oxidative stress and autophagy are involved in the pathogenesis of Parkinson's disease.The relationship between oxidative stress and autophagy is a hot spot of scientific research. (bioportfolio.com)
  • Salivary oxidative stress markers represent a promising tool for monitoring of oral diseases. (hindawi.com)
  • The aim of our study was to examine the impact of blood contamination on the measurement of salivary oxidative stress markers. (hindawi.com)
  • Markers of oxidative stress were measured in all collected saliva samples. (hindawi.com)
  • One % blood contamination biased concentrations of salivary oxidative stress markers. (hindawi.com)
  • Salivary markers of oxidative stress were significantly altered in blood-contaminated saliva in control and patients with gingivitis after dental hygiene treatment. (hindawi.com)
  • Markers of oxidative stress in saliva have become an attractive tool for analyzing the pathogenesis and monitoring of oral and dental diseases. (hindawi.com)
  • Cross-reacting substances in the mouth and saliva collection methods could influence assay validity of oxidative stress markers [ 1 - 3 ]. (hindawi.com)
  • Blood leakage into saliva as a result of microinjury represents an important factor that is expected to influence the concentrations of markers of oxidative stress in saliva. (hindawi.com)
  • The concentrations of oxidative stress markers are typically several times higher in plasma than in saliva [ 4 ]. (hindawi.com)
  • In patients with gingivitis blood leakage into saliva could artificially increase concentrations of salivary markers of oxidative stress. (hindawi.com)
  • Despite the rising popularity of salivary oxidative stress analyses in patients with periodontal diseases, no reports have been published regarding the effect of blood contamination in saliva on concentrations of oxidative stress markers. (hindawi.com)
  • The aim of our study was to analyze the effect of artificial whole blood contamination and the effect of contamination with individual blood components (plasma, red blood cells, and hemoglobin) on salivary concentrations of markers of oxidative stress in healthy probands. (hindawi.com)
  • In addition, the impact of blood contamination should be studied in a case-control study comparing the salivary markers of oxidative stress in patients with gingivitis and healthy controls after dental hygiene treatment. (hindawi.com)
  • Tissue analyses revealed presence of oxidative stress, high extracellular and intracellular Ti levels and imbalanced bone turnover. (nih.gov)
  • Fluoride-induced immunotoxicity in adult male albino rat: a correlative approach to oxidative stress. (fluoridealert.org)
  • A total of 32 electrohypersensitivity (EHS) self‑reporting patients were serially included in the present prospective study for oxidative stress and antioxidative stress response assessment. (spandidos-publications.com)
  • additional measurements included total thiol group molecules, reduced glutathione (GSH), oxidized glutathione (GSSG) for oxidative stress assessment and nitrotyrosine, a marker of peroxynitrite‑induced oxidative/nitrosative stress. (spandidos-publications.com)
  • The present prospective in vivo biochemical investigation aimed to determine whether EHS self-reporting patients may also be characterized by oxidative stress abnormalities in the peripheral blood, to further identify and characterize EMFIS. (spandidos-publications.com)
  • Assessments included an oral mucous membrane irritation test in conjunction with analyses of cell viability, cell adhesion, and oxidative stress responses. (deepdyve.com)
  • The oxidative stress data for the aged G/Z- and Y-TZP-treated cells showed a significant increase at 72 h. (deepdyve.com)
  • Conclusion- Thiol oxidative stress enhances macrophage recruitment into vascular and renal lesions by increasing the responsiveness of macrophages to chemoattractants. (ahajournals.org)
  • In this paper the finite element procedure is used to evaluate various bone, implant and loading parameters for their influence on the stress distribution within the bone, in particular in the mandible. (edu.au)
  • The methodology and analysis techniques employed to enable accurate modelling of the implant and bone systems are discussed in the companion paper (Part I). The analysis results show that an increase in the Young?s moduli for the cancellous and cortical bone yields elevated stress magnitudes in the bone. (edu.au)
  • In both cancellous and cortical bone, t he implant length demonstrates to be more influential, in terms of differences between the minimum and maximum stress values, as compared to the diameter. (edu.au)
  • Results from these analyses, combined with data from our retrieval collection and cadaveric spine simulator, provide valuable insight into performance and potential failure modes for spine implant devices. (exponent.com)
  • Optimized Dental Implant Fixture Design for the Desirable Stress Distribution in the Surrounding Bone Region: A Biomechanical Analysis. (nih.gov)
  • maximum principal, minimum principal and shear stress analyses evaluated the peri-implant bone tissue. (scielo.br)
  • In conclusion, bar cross-section showed no influence on stress distribution for peri-implant bone tissue, and circular bar provided better behavior to the prosthetic system. (scielo.br)
  • Metal Nanoparticles Released from Dental Implant Surfaces: Potential Contribution to Chronic Inflammation and Peri-Implant Bone Loss. (nih.gov)
  • Although it represents a common complication of dental implant treatments, the underlying mechanisms have not yet been fully described. (nih.gov)
  • Subsequently, in vivo analysis of peri-implant Ti particle distribution, histological, and molecular analyses were performed. (nih.gov)
  • Dr. Villarraga's research experience and interests include spine biomechanics, implant and tissue retrieval analysis, including the use of microscopic (SEM) and tissue analysis techniques (ICP, histology), use of animal models for evaluating orthopedic/spinal device performance, and the use of experimental and finite element stress analysis techniques to characterize the mechanical behavior of bone, other biological structures, and orthopedic/spinal implant devices. (exponent.com)
  • Stress shielding, which occurred always around traditional one part implant applied for prosthetic artificial lower limb attachment, would cause osteoporosis and thus result in the loose and extrusion, and then the malfunction of the implant. (scientific.net)
  • Based on CT data and under the maximal load during a normal walking cycle, 3D finite element analysis (FEA) was carried out to analyze the stress of bone around the new implant in three cases of distally truncated femur at high position、middle-position and low-position. (scientific.net)
  • Results reveal that stress shielding and stress concentration under the new type of implant reduced effectively compared with the traditional one-part implant, and the stress distribution is much close to the natural bone. (scientific.net)
  • Finite element analysis of bone stress and strain around a distal osseointegrated implant for prosthetic limb attachment. (scientific.net)
  • In this research, a new cylindrical dental implant composed of three parts was designed to offer favored mechanical environment for the bone. (scientific.net)
  • A special gap structure changed the means of the stress transmission and decreased the stress in the cortical bone around the neck of the implant. (scientific.net)
  • Through finite element analysis (FEA) of stress distribution in bone around implant-bone interface, the advantages of this new implant (reducing stress concentration in cervical cortex and satisfying varieties of clinical needs) were verified. (scientific.net)
  • The peak stress for the new design was about 30 percent less than that of the traditional implant and the flexibility of the design was also confirmed by changing the gap depth and the wall thickness. (scientific.net)
  • Abstract: Stress concentration is one of the main mechanical problems leading to the failure of clinical application for osteointegrated implant of percutaneous osteointegrated prosthesis, which is especially marked for higher amputated leg prosthesis. (scientific.net)
  • The FEA results with the new implant demonstrated that compared to traditional design, the declination of bone stress peak ranged from 15.68% to 28.67%, perpendicular deformation from 34.73% to 72.16%, and maximal stress of implant from 14.51% to 23.36% with the increasing of loads from 3750N to 2000N. (scientific.net)
  • Broaden and enhance your Dental Implant skills and knowledge by taking advantage of travelling and learning in our exciting worldwide locations. (straumann.com)
  • Macrogeometry influence on the physical characterization of osseointegrable dental implant surface. (straumann.com)
  • Evaluation of peri-implant stresses arising from different dental materials. (straumann.com)
  • In vitro evaluation of mechanical resistance to vertical displacement in polyurethane jaws submitted to osteotomy for inferior alveolar nerve lateralization and dental implant placement. (straumann.com)
  • The new clinics will aid Evo Dental will offer its exclusive full jaw dental implant solution, which features prosthesis additive manufacturing, digital scanning, and high-precision milling machines to patients who require jaw reconstruction. (medgadget.com)
  • A method for manufacturing a dental implant including an abutment is manufactured through the following steps. (google.com)
  • The present invention relates to a dental implant and a method for manufacturing the dental implant. (google.com)
  • An implant (dental implant) has been extensively used to restore the function of a tooth lost by various causes. (google.com)
  • In general, the dental implant includes a fixture anchored to a jawbone and an abutment threadedly coupled to the fixture. (google.com)
  • A crown restoration is capped on the dental implant (the abutment threadedly coupled to the fixture) and fixed thereto with dental cement, thereby bringing the dental implant into a shape corresponding to that of an original tooth. (google.com)
  • The combination of stress, corrosion, and bacteria contribute to implant failure. (ijdr.in)
  • San Francisco, June 24, 2016 (GLOBE NEWSWIRE) -- This report provides detailed analysis of worldwide markets for Dental Implant from 2011-2016, and provides extensive market forecasts (2016-2021) by region/country and subsectors. (cnbc.com)
  • It covers the key technological and market trends in the Dental Implant market and further lays out an analysis of the factors influencing the supply/demand for Dental Implant, and the opportunities/challenges faced by industry participants. (cnbc.com)
  • A dental implant (also known as an endosseous implant or fixture) is a surgical component that interfaces with the bone of the jaw or skull to support a dental prosthesis such as a crown, bridge, denture, facial prosthesis or to act as an orthodontic anchor. (cnbc.com)
  • The implant fixture is first placed, so that it is likely to osseointegrate, then a dental prosthetic is added. (cnbc.com)
  • A variable amount of healing time is required for osseointegration before either the dental prosthetic (a tooth, bridge or denture) is attached to the implant or an abutment is placed which will hold a dental prosthetic. (cnbc.com)
  • The amount of stress that will be put on the implant and fixture during normal function is also evaluated. (cnbc.com)
  • Global Dental Implant Market Forecast and Analysis 2016-2021, has been prepared based on the synthesis, analysis, and interpretation of information about the global Dental Implant market collected from specialized sources. (cnbc.com)
  • In this sector, global competitive landscape and supply/demand pattern of Dental Implant industry has been provided. (cnbc.com)
  • Comparison of the Clinical Accuracy of Digital and Conventional Dental Implant Impressions. (helsinki.fi)
  • A dental implant is an artificial tooth root, which is screw or cylinder-shaped, that is placed into the jaw to hold a replacement tooth or bridge. (realfarmacy.com)
  • STATEMENT OF PROBLEMS: Stress analysis on implant components of the combined screw- and cement-retained implant prosthesis has not investigated yet. (koreamed.org)
  • PURPOSE: The purpose of this study was to assess the load distribution characteristics of implant prostheses with the different prosthodontic retention types, such as cement-type, screw-type and combined type by using 3-dimensional finite element analysis. (koreamed.org)
  • Von-Mises stress patterns on alveolar bone, implant body, abutment, abutment screw, and prosthetic screw around implant prostheses were evaluated through 3-dimensional finite element analysis. (koreamed.org)
  • In all models, the von Mises stress distribution of cortical bone, cancellous bone and implant body showed the similar pattern. (koreamed.org)
  • Within the limitation of the FEA study, the combined type implant prosthesis did not demonstrate more stress around implant components than the cement type implant prosthesis. (koreamed.org)
  • Under the assumption of ideal passive fit, the screw-type implant prosthesis showed the least stress around implant components. (koreamed.org)
  • This report provides detailed analysis of worldwide markets for Dental Implant from 2011-2016, and provides extensive market forecasts (2016-2021) by region/country and sub sectors. (medgadget.com)
  • The report, Global Dental Implant Market Forecast and Analysis 2016-2021, has been prepared based on the synthesis, analysis, and interpretation of information about the global Dental Implant market collected from specialized sources. (medgadget.com)
  • Conclusion: FEA proved to be an adequate method for studying microgap formation in dental implant-abutment complexes. (quintpub.com)
  • This study aimed to analyze stress distribution and maximum von Mises stress generated in intracoronal restorations and in tooth structures of mandibular molars with various types of cavity designs and materials. (bvsalud.org)
  • In tooth structure, magnitudes of maximum von Mises stresses were similar among models with conventional design (372.8 - 412.9 MPa) and models with minimal cavity design (361.1 - 384.4 MPa). (bvsalud.org)
  • Minimal invasive models generated smaller maximum von Mises stresses within restorations. (bvsalud.org)
  • Within the enamel, similar maximum von Mises stresses were observed for models with minimal cavity design and those with conventional design. (bvsalud.org)
  • 4] 00E+08 0 10 20 30 40 Distal Distance/cm Proximal von Mises stress/Pa a1 b1 a2 b2 a3 b3 bone. (scientific.net)
  • 3] 00E+08 0 5 10 15 20 25 30 35 40 Distal Distance/cm Proximal von Mises stress/Pa a1 b1 a2 b2 a3 b3 bone Fig. 6 Path plots of stress distribution along femur at different amputated position (A) from front side of femur (B)from back side of femur (B). (scientific.net)
  • Geometric non-linear theory was applied to evaluate Von-Mises stress distribution and displacement. (alliedacademies.org)
  • Model 2 showed the lowest von Mises stress. (koreamed.org)
  • The von-Mises stress on abutment, abutment screw, and prosthetic screw showed the lower values for the screw-retained type abutment than for the cement-retained type abutment regardless of the model type. (koreamed.org)
  • Such tooth-colored restorations can adhere to the dental tissues. (pubmedcentralcanada.ca)
  • The main interest is to verify impression methods as they serve as a base for dental restorations. (jove.com)
  • Before returning to Cyprus, he worked as a post-doctoral researcher at the Bioengineering Research Center of the University of Kansas where he collaborated with a multidisciplinary team of researchers on several projects with the overarching goal being the improvement of the mechanical performance of dental composite restorations. (cut.ac.cy)
  • [11] The impacts of restorations on the chewing surfaces of the teeth being the incorrect height has also been raised as another factor adding to the stress at the CEJ. (wikipedia.org)
  • In the present work, through the use of high-fidelity biomodels, computational mechanobiological analyses were performed on four molar models affected with four different degrees of caries, which are subjected to masticatory forces. (hindawi.com)
  • In contrast, excessive fluoride intake causes dental fluorosis, visually recognizable enamel defects that can increase the risk of caries. (sciencemag.org)
  • Growth in the number of cases related to dental caries and the increased inclination of individuals towards the cosmetic industry is expected to be among the major factors transforming the growth of the market in the forecast period. (medgadget.com)
  • Furthermore, the growing occurrence of dental caries and tooth loss related to the aging population is anticipated to power the development of the market in this region. (medgadget.com)
  • An epidemiological profile of dental caries in 12-year-old children residing in cities with and without fluoridated water supply in the central western area of the State of Sao Paulo, Brazil]. (fluoridealert.org)
  • Streptococcus mutans , a major etiological agent of dental caries, uses two-component signal transduction systems (TCSTSs) to monitor and respond to various environmental stimuli. (asm.org)
  • the goal of the project is to investigate the clinical efficacy of management of early caries lesions by resin infiltration and to further scrutinize the patient stress experiences. (clinicaltrials.gov)
  • Additionally, it was hypothesized that dental anxiety and stress related to caries infiltration will be significantly less than dental anxiety related to a conventional restorative procedure. (clinicaltrials.gov)
  • To evaluate dental anxiety and stress reactions in relation to the caries infiltration procedure in comparison with a dental examination appointment and conventional resin restoration appointment. (clinicaltrials.gov)
  • Verification on Correlation of Dental Caries and Stress Concentration. (worldwidescience.org)
  • Minnesota Dental Research Center for Biomaterials and Biomechanics, Department of Oral Science, University of Minnesota School of Dentistry, Minneapolis, Minnesota 55455, USA. (biomedsearch.com)
  • That is why computational mechanobiological analysis at the tissue level using the finite element method is very useful to achieve a better understanding of the biomechanics and the behaviour of dental tissues in various pathologies. (hindawi.com)
  • The aim of this study was to evaluate by three-dimensional finite element analysis (3D-FEA) the biomechanics involved in bar-framework system for overdentures. (scielo.br)
  • Effect of Different Treatment Options on Biomechanics of Immature Teeth: A Finite Element Stress Analysis Study. (semanticscholar.org)
  • The results have strong implications for understanding the functional biomechanics of dental traits, for deciphering the evolutionary trend of our masticatory apparatus and might have important implications in modern dentistry for improving dental treatments", says Jean-Jacques Hublin, director of the Department of Human Evolution at the Max Planck Institute for Evolutionary Anthropology. (sciencecodex.com)
  • A team of biologists examined the functional biomechanics of dental features and tooth wear, finding that the biomechanical requirements on teeth change during one's lifetime. (scitechdaily.com)
  • The reactions to the external loads on the dental organs depend on the advances of the carious lesion that they present, since the distribution of stresses is different in a healthy tooth. (hindawi.com)
  • Evaluation of stress on tooth and periodontium with varying degree of bone support on orthodontic force application: A 3D finite element analysis. (thejcdp.com)
  • Curve-fitting by nonlinear regression analysis provided an equation describing the relationship between force magnitude and rate of tooth movement in beagles. (rug.nl)
  • Excessive fluoride ingestion during childhood results in defective tooth enamel mineralization, which can lead to dental problems later in life. (sciencemag.org)
  • We found the Megapiranha teeth had the same maximum strength like you saw in regular piranha, but then the patterns of stress distribution within the tooth was also similar to fish able to eat hard-prey," she said. (bio-medicine.org)
  • Considering that these materials are bonded to tooth cavities, this volume contraction generates internal stress, which in turn compromises the mechanical and chemical stability of the restorative materials and may decrease marginal adaptation. (pubmedcentralcanada.ca)
  • Dental hypoplasias provide an indicator of health status during the time in childhood when the enamel of the tooth crown is being formed. (wikipedia.org)
  • The dental profession took a giant step backward when it accepted as a scientifically supported theory that tooth brushing was the cause of gingival notching of teeth. (brianpalmerdds.com)
  • The current limitation of many reference scanners is the lack of accuracy scanning large objects like full dental arches, or the limited possibility to assess detailed tooth surfaces. (jove.com)
  • A specific scanning protocol was tested to scan original tooth surface from dental impressions. (jove.com)
  • Dental Fear in Children with Repeated Tooth Injuries. (semanticscholar.org)
  • Their findings show that different features of the occlusal surface antagonize tensile stresses in the tooth to tooth contact during the chewing process. (sciencecodex.com)
  • They further show that tooth wear with its loss of dental tissue and the reduction of the occlusal relief decreases tensile stresses in the tooth. (sciencecodex.com)
  • Thus, when the condition of the occlusal surface changes during an individual's lifetime due to tooth wear, the biomechanical requirements on the existing dental material change as well - an evolutionary compromise for longer tooth preservation. (sciencecodex.com)
  • For decades, dental healthcare professionals have measured the buffering capacity and bacterial content of saliva to assess a person's risk of developing tooth decay ( 1 ). (aacc.org)
  • the enamel , especially at the cementoenamel junction (CEJ), undergoes large amounts of stress, causing micro fractures and tooth tissue loss. (wikipedia.org)
  • Abfraction lesions will generally occur in the region on the tooth where the greatest tensile stress is located. (wikipedia.org)
  • It is important to note that studies supporting this configuration of abfraction lesions also state that when there is more than one abnormally large tensile stress on a tooth two or more abfraction lesions can result on the one surface. (wikipedia.org)
  • Abstract: It is important to obtain mechanical coupling between dental implants and bone, because the lack of mechanical coupling may cause bone loss around implants. (scientific.net)
  • Student project materials are drawn from orthopedic devices, soft tissue implants, artificial organs, and dental implants. (merlot.org)
  • Three-dimensional finite element analysis for stress in the periodontal tissue by orthodontic forces. (thejcdp.com)
  • Expression of superoxide anions, cytokines tumour necrosis factor-α and interleukin-1β from neutrophils was increased with the decrease in particle size and especially pronounced below 10 μm, inducing phagocytosis to cells and inflammation of tissue, although inductively coupled plasma chemical analysis showed no dissolution from Ti particles. (royalsocietypublishing.org)
  • There is no way that any dental procedure can reach these accessory canals and clean out the dead tissue. (realfarmacy.com)
  • With assumptions about tissue abrasion as suggested by expert consultation, a single dental procedure on an infective patient would be about 1,000,000,000 times less likely to transmit vCJD than - say - a tonsillectomy. (dentalindia.com)
  • Thinner cortical bone results in elevated stress levels within itself as well as in the cancellous bone. (edu.au)
  • With the analyses performed, it is possible to observe that the masticatory forces that act on the enamel are not transmitted to the dentin and to the bone and periodontal ligament to protect the nerve, as it happens in a healthy dental organ. (hindawi.com)
  • Alveolar bone resorption and the center of resistance modification (3-D analysis by means of the finite element method). (thejcdp.com)
  • Home Key Engineering Materials Advanced Biomaterials VI 3D Finite Element Analysis of Bone Stress around. (scientific.net)
  • Finite element analyses to study periprosthetic bone adaption. (scientific.net)
  • Harris lines form before adulthood, when bone growth is temporarily halted or slowed down due to some sort of stress (either disease or malnutrition). (wikipedia.org)
  • The basis for modern dental implants is a biologic process called osseointegration where materials, such as titanium, form an intimate bond to bone. (cnbc.com)
  • The prerequisites to long-term success of osseointegrated dental implants are healthy bone and gingiva. (cnbc.com)
  • Our clinic has only the latest state of the art equipment like an electrocardiogram, vascular imaging, holter monitoring, echocardiogram, ultrasound imaging, total body analysis, bone density, treadmill stress test and others. (physicaltherapist.com)
  • Regardless of loading conditions and type of abutment system, the stress of bone was concentrated on the cortical bone. (koreamed.org)
  • Finite element analysis of stress in bone adjacent to dental implants. (bvsalud.org)
  • A finite element analysis was performed to predict stress distribution generated by occlusal loading. (bvsalud.org)
  • Due to this, analysis of the distribution of stresses generated by occlusal or masticatory loads, in a biological system such as the teeth, is a complex problem [ 7 ], because of the nature of the tissues of the dental organ, such as nonhomogeneous materials and the geometric irregularities of their contours and anatomical forms. (hindawi.com)
  • In such a condition, the different crests of a molar carry out important biomechanical functions, for example, by reinforcing the crown against stresses that occur during the chewing process. (sciencecodex.com)
  • a) Dental occlusion, (b) points where the upper teeth make contact with the lower teeth, according to their morphology, and (c) detail of occlusal assembly between premolars. (hindawi.com)
  • Crofts' main contribution involved analysis of how Megapiranha teeth handled stresses and how breakable the teeth might have been. (bio-medicine.org)
  • Based on a fossilized jaw and three teeth, Crofts conducted a computer generated "finite element analysis" for the team. (bio-medicine.org)
  • Effect of Intracoronal Depth of Teeth Restored with Endocrowns on Fracture Resistance: In Vitro and 3-dimensional Finite Element Analysis. (semanticscholar.org)
  • Using the 'Finite Mathematical Element Stress Analysis,' they were able to determine the stress loads in teeth during various tests. (brianpalmerdds.com)
  • 1999. A laboratory assessment of enamel hypoplasia of teeth with varying severities of dental fluorosis. (fluoridealert.org)
  • Dr. Price, while head of research for the now-defunct National Dental Association, took one thousand extracted teeth and reamed them out as dentists normally do, prior to filling the canals with wax. (realfarmacy.com)
  • Researchers at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and the Senckenberg Research Institute in Frankfurt am Main, Germany, have conducted stress analyses on gorilla teeth of differing wear stages. (sciencecodex.com)
  • This shows maximal principal stress distribution observed in three gorilla teeth of an unworn (left), a lightly worn (middle) and a worn (right) condition. (sciencecodex.com)
  • Patients and their guardians will be instructed to use dental floss to remove dental biofilm in both proximal sites once a day and to brush teeth with fluorated toothpaste twice a day. (clinicaltrials.gov)
  • Maximal principal stress distribution observed in three gorilla teeth of an unworn (left), a slightly worn (middle) and a worn (right) condition. (medicalxpress.com)
  • If teeth come together in a non-ideal bite the researchers state that this would create further stress in areas on the teeth. (wikipedia.org)
  • The aims of this study were analyze the amount of stress condition when the traction force was applied to the condyle head from the chin area of mandible and amount of distortion condition when intended 0.5 mm distraction distance from surface or one point of dissected midline of mandible. (koreascience.or.kr)
  • 2. When 0.5 mm of intended surface distortion was applied after dissection of mid-mandible area, base anterior area showed the greatest amount of stress but the least stress area was coronoid process. (koreascience.or.kr)
  • 3. One point distortion was applied after dissection of mid-mandible area, ramus posterior area showed the greatest amount of stress and menton area were the least stress condition. (koreascience.or.kr)
  • The search for an ideal and standard apparatus for measuring shrinkage stress and volumetric polymerization shrinkage of resin-based materials in dentistry is still required. (pubmedcentralcanada.ca)
  • Dental 3D printing is a form of modern dentistry and is considered to be wide-spreading in the dental industry. (medgadget.com)
  • The European region is appraised to be the next largest market in the globe due to the growing number of dental problems, rise in the government expenditure for oral care, the existence of disposable income, and growing demand for cosmetic dentistry. (medgadget.com)
  • Mathematical and virtual models, created through a modular construction, easily permit us to evaluate in a dynamic mode different dental prostheses used in dentistry domain. (springer.com)
  • Biomechanical methods applied in dentistry: a comparative overview of photoelastic examinations, strain gauge measurements, finite element analysis and three-dimensional deformation analysis. (helsinki.fi)
  • However, vCJD infectivity in other tissues encountered in dentistry - e.g. dental pulp - is implied by some animal models. (dentalindia.com)
  • Therefore, the present pilot study revealed that alignment of wires in self -ligating brackets produced lower stress in periodontal tissues in expansive mechanics . (bvsalud.org)
  • Increase in adult orthodontic patients has increased the challenges faced by orthodontists, as they often present themselves with a varying degree of dental and periodontal compromise, in which the entire orthodontic treatment planning will revolve around maintenance and augmentation of supporting apparatus. (thejcdp.com)
  • A stress analysis of the periodontal ligament under various orthodontic loadings. (thejcdp.com)
  • Laforgia A, Corsalini M, Stefanachi G, Pettini F, Di Venere D. Assessment of Psychopatologic Traits in a Group of Patients with Adult Chronic Periodontitis: Study on 108 Cases and Analysis of Compliance during and after Periodontal Treatment. (medsci.org)
  • Depression, stress and anxiety have not been confirmed yet as risk conditions but, in some observational studies, they have been identified as potential risk factors of periodontal disease. (medsci.org)
  • For each of the psychological variables considered (depression, anxiety, stress), a significant correlation could be observed with periodontal disease, it can be therefore be suggested that the importance these disturbs have in the onset and progress of the dental disease which supports the existing available data in literature. (medsci.org)
  • Anxiety, stress and depression have not been proved yet as risk factors of the periodontal disease, but some observational studies support this kind of correlation [ 1 , 2 , 3 ]. (medsci.org)
  • Other factors such as depression, stress and anxiety were not confirmed as absolute risk condition, but in some observational studies they were identified as potential risk factors for periodontal disease. (medsci.org)
  • 3D-Finite element analysis of molars restored with endocrowns and posts during masticatory simulation. (semanticscholar.org)
  • OBJECTIVE The objective was to compare equivalent stresses in molars restored with endocrowns as well as posts and cores during masticatory simulation using finite element analysis. (semanticscholar.org)
  • Exposure of enamel cells to fluoride resulted in decreases in ER Ca 2+ content and store-operated Ca 2+ entry into the ER, reduced the expression of genes encoding ER stress-response proteins, and resulted in mitochondrial dysfunction. (sciencemag.org)
  • These data may explain how fluorosis affects Ca 2+ homeostasis in enamel-forming cells and highlight cell type-specific stress responses. (sciencemag.org)
  • Fluoride ions are highly reactive, and their incorporation in forming dental enamel at low concentrations promotes mineralization. (sciencemag.org)
  • To investigate the molecular bases of dental fluorosis, we analyzed the effects of fluoride exposure in enamel cells to assess its impact on Ca 2+ signaling. (sciencemag.org)
  • Studies of dental enamel hypoplasia are used to study child health. (wikipedia.org)
  • Quantitative epidemiological analysis of acute childhood stress recorded in dental enamel defects reveals many children died rapidly from diseases such as smallpox. (osu.edu)
  • [3] [11] These lead to a concentration of stress and flexion at the area where the enamel and cementum meet (CEJ). (wikipedia.org)
  • Only studies that performed laboratory methods to evaluate the amount of the polymerization shrinkage and/or stresses of dental resin-based materials during polymerization were selected. (pubmedcentralcanada.ca)
  • Besides, there are factors that may contribute the differences between the various methods in measuring the amount of shrinkages and stresses of resin composites. (pubmedcentralcanada.ca)
  • Current dental impression methods showed much higher deviations (trueness: 20.4 ± 2.2 µm, precision: 12.5 ± 2.5 µm) than the internal scanning accuracy of the reference scanner. (jove.com)
  • Methods and Results- Reduced glutathione (GSH) and glutathione disulfide (GSSG) levels in peritoneal macrophages isolated from mildly, moderately, and severe metabolically-stressed LDL-R −/− mice were measured by HPLC, and the glutathione reduction potential (E h ) was calculated. (ahajournals.org)
  • METHODS: The pre and post workday scapular kinematics were recorded from dental hygienists using an electromagnetic tracking system. (cdc.gov)
  • The prevalence of and risk factors for neck and shoulder disorders among dental practitioners (dentists, dental hygienists, and dental assistants) is reviewed. (cdc.gov)
  • Dental hygienists report even higher rates, from 54-83% for neck and 35-76% for shoulder, and dental assistants in between (38-62% and 27-62% respectively). (cdc.gov)
  • Exposure to a workday environment results in an increase in anterior tilting of the scapula in dental hygienists with greater employment experience. (cdc.gov)
  • BACKGROUND: Dental hygienists suffer a high incidence of shoulder pathology that seems to increase with job longevity. (cdc.gov)
  • The aim of this study was to examine if changes in scapular tilt and rotation occurs after a workday in dental hygienists. (cdc.gov)
  • As with most conventional medical practitioners, the largest percentage of practicing dentists and dental hygienists are driven by misinformation and myths that have been exposed before but that continue to be promulgated by the profession due to a repetition of ignorance and dismissal of holistic dental practices of which the public are quickly becoming informed. (realfarmacy.com)
  • Peri-implantitis is an inflammatory disease affecting tissues surrounding dental implants. (nih.gov)
  • This was a descriptive-analytical cross-sectional study on 297 dental students enrolled at the Kerman University of Medical Science in 2015 - 2016. (magiran.com)
  • The results show that in unworn and slightly worn molars (with a well-formed occlusal relief that is most effective for processing food) tensile stresses concentrate in the grooves of the occlusal surface. (sciencecodex.com)
  • this is dedicated to the analysis of stresses and deformations in tissues in living beings. (hindawi.com)
  • If tissues such as dental pulp were to be infective, the risks of transmitting vCJD would obviously increase. (dentalindia.com)
  • It is estimated that the Global Dental 3d Printing Market is expected to register a CAGR ~ 24.5 % during the forecast period of 2018-2023. (medgadget.com)
  • July 2018 A well-known biotechnology company, Evo Dental which is based out of London has received as £4 million investment from the British Growth Fund (BGF) to develop its 3D printing jaw correction clinics through the UK. (medgadget.com)
  • Do's and don'ts for practice analysis: Is it time for new systems? (drbicuspid.com)
  • The leading cause of high practice stress is outdated systems. (drbicuspid.com)
  • If your practice is constantly experiencing high stress, it's a message from your systems saying, "Replace me. (drbicuspid.com)
  • Roger P. Levin, DDS, is the founder and CEO of Levin Group , the leading dental practice consulting firm in North America. (drbicuspid.com)
  • Quantum Reflex Analysis is a primary component of effective clinical practice because of its ability to access and analyze the body's Biofield. (quantumreflexanalysis.info)
  • It covers procedures carried out in 'high street' dental practice, rather than more specialised maxillo-facial surgery. (dentalindia.com)
  • This study examined the effect of metabolic stress on the thiol redox state, chemotactic activity in vivo, and the recruitment of macrophages into atherosclerotic lesions and kidneys of LDL-R −/− mice in response to mild, moderate, and severe metabolic stress. (ahajournals.org)
  • Further research has shown that the normal occlusal forces from chewing and swallowing are not sufficient to cause the stress and flexion required to cause abfraction lesions. (wikipedia.org)
  • Chronic stress increases pain sensitivity via activation of the rACC-BLA pathway in rats. (bioportfolio.com)
  • One-way and multiway sensitivity analyses were performed. (jmir.org)
  • The boxes indicate the 1-tailed P value for each study, with lower values corresponding to greater stress sensitivity of s allele carriers and higher values, greater stress sensitivity of l allele carriers. (jamanetwork.com)
  • The analysis of the distribution of stress in dental organs is a poorly studied area. (hindawi.com)
  • Aims & Objective This study was to analyze and compare, stress distribution and displacement of fused maxilla and circumaxillary structures between two different micro-screw assisted rapid palatal expanders (MARPE) using Finite Element Method. (alliedacademies.org)
  • Results The stress and strain distribution from forces applied to the circumaxillary sutures, mainly along the suture showed Type 1 had more stress and strain distribution than Type 2. (alliedacademies.org)
  • Effect of perforation size and furcal lesion on stress distribution in mandibular molars: a finite element analysis. (semanticscholar.org)
  • PD-L1 expression in gastric cancer determined by digital image analyses: pitfalls and correlation with pathologist interpretation. (nih.gov)
  • We combine this experience with our long standing expertise in metallurgy, polymer science, and failure analysis to provide our clients with a unique perspective for addressing complex computational projects required in the medical device industry. (exponent.com)
  • Dr. Villarraga has conducted failure analyses, root cause analyses, and compliance evaluations related to medical device recalls. (exponent.com)
  • An in vitro study evaluated the failure load and the shear bond strength of 4 block materials indicated for computer-aided design/computer-aided manufacturing of dental veneers: lithium disilicate, feldspathic ceramic, polymer-infiltrated ceramic, and nanohybrid composite. (agd.org)
  • Noxious physical stress can cause reflex responses in visceral function via autonomic nerves. (bioportfolio.com)
  • These noxious stress-induced ovarian hormonal responses were observed after decerebration, but were abolished after spinal transection. (bioportfolio.com)
  • Intraoperative stress responses (vasoconstriction and changes in heart rate) and postoperative pain can be monitored using photoplethysmography (PPG). (bioportfolio.com)
  • EHS self-reporting patients were also objectively identified and characterized by demonstrating potential associations with a number of biological abnormalities, consisting of a degree of inflammation, heat-shock protein-associated cellular stress and autoimmune responses in the peripheral blood, and an abnormal 6-hydroxy-melatonin sulfate/creatinine ratio in the urine ( 3 ). (spandidos-publications.com)
  • Next, saliva was collected from 12 gingivitis and 10 control patients before and after dental hygiene treatment. (hindawi.com)
  • Saliva samples with 1% blood contamination are visibly discolored and can be excluded from analyses without any specific biochemic detection of blood constituents. (hindawi.com)
  • In fact, human saliva offers several benefits compared to traditional blood-based biochemical analyses. (aacc.org)
  • Saliva collection is non-invasive and therefore stress-free for patients. (aacc.org)
  • Biomechanical behavior of narrow diameter dental implants. (straumann.com)
  • They then used an engineering approach, finite element analysis (FEA), to evaluate whether some dental traits usually found in hominin and extant great ape molars have important biomechanical implications. (sciencecodex.com)
  • Treatment effect of MARPE Type 1 & 2 compared for biomechanical variables such as displacements, strains and stresses through the FE models in our study. (alliedacademies.org)
  • Accelerated aging at 15 and 30 hours, approximating 30 and 60 years in vivo, aged 36 Zirconia dental implants: Z systems ® (A), Straumann ® (B), Ceraroot ® (C), and Zeramex ® (D). Focused ion beam-scanning electron microscopic analysis determined the micro structural features, phase transformation, and the formation of micro cracks. (nih.gov)
  • Exponent conducts FE modeling to evaluate in situ stress states of implantable spinal devices and surrounding biological structures, and to explore natural and device associated spinal kinematics. (exponent.com)
  • By means of a photoelastic model, this study analyzed the stress caused on conventional and self -ligating brackets with expanded arch wires. (bvsalud.org)
  • This study evaluated the effect of LTD on four types of Zirconia dental implants at 0, 30, and 60 years of artificial aging. (nih.gov)
  • CONCLUSION: The present study proposed measuring band displacement as an in vitro methodology to determine the packability of dental composite. (biomedsearch.com)
  • This study included 123 community-dwelling women participants of 18 years and above, with stress urinary incontinence ≥1 time per week. (jmir.org)
  • Type of treatment, prognosis, and estimation of time spent to manage dental trauma in late presentation cases at a dental teaching hospital: a longitudinal and retrospective study. (semanticscholar.org)
  • For this study, 3D finite element analysis were performed. (koreascience.or.kr)
  • The aim of this study was to assess the stress, anxiety, and depression levels of dental students and their relationships with demographic factors. (magiran.com)
  • Based on the findings of the present study, the high prevalence of depression, anxiety, and stress among dental students in Kerman is alarming. (magiran.com)
  • Although one study suggested that the Irish elk was closely related to the red deer (Cervus elaphus), most other phylogenetic analyses support that their closest living relatives are fallow deer (Dama dama). (wikipedia.org)
  • Reconstruction considerations for severe dental attrition. (biomedsearch.com)
  • The students with higher scores in the entrance exam who were free of charge presented significantly higher levels of severe-to-extremely severe stress and depression (P = 0.003 and P = 0.033, respectively) than students who were charged tuition fees. (magiran.com)
  • One drawback is that the polymerization shrinkage and induced stresses during the curing procedure is an inherent property of resin composite materials that might impair their performance. (pubmedcentralcanada.ca)
  • This review focuses on the significant developments of laboratory tools in the measurement of polymerization shrinkage and stresses of dental resin-based materials during polymerization. (pubmedcentralcanada.ca)
  • The market for dental 3D printing is likely to advance further due to its ability to ensure accuracy and speed along with its ease of use and specialized dental materials. (medgadget.com)
  • The results suggest that the new calcium-silicate-based endodontic cement provides improvement in sealing ability as well as clinical manageability of dental filling materials. (ijdr.in)
  • Quantitative Analysis of Aqueous Phase Composition of Model Dentin Adhesives Experiencing Phase Separation," (2012) Journal of Biomedical Materials Research Part B: Applied Biomaterials, 100B (4): 1086-1092. (cut.ac.cy)
  • Dental 3D printing involves creating three dimensional solid dental models such as dentures, surgical guides, dental implants, crown, and bridges. (medgadget.com)
  • Beek M, Koolstra JH, van Ruijven LJ, van Eijden TM (2000) Three-dimensional finite element analysis of the human temporomandibular joint disc. (springer.com)
  • The hypotheses were tested using independent lines of data derived from archaeology, ethnohistory, burial patterning, skeletal pathological conditions that record multiple forms of biological stress, and inherited dental traits. (osu.edu)
  • Population genetic analyses of dental traits indicate major postcontact genetic transformation. (osu.edu)
  • Any risk of transmission depends critically on the initial prevalence of the disease and the number of invasive dental procedures. (dentalindia.com)
  • The morphology of each dental organ is designed to perform this function. (hindawi.com)
  • Harmonious relationship of dental morphology. (hindawi.com)
  • Comparative functional analysis of skull morphology of tree-gouging primates. (docme.ru)
  • Recent theoretical analysis of craniofacial morphology of Australopithecus africanus proposes that skull form in this taxon represents adaptation to feeding on large, hard objects. (jove.com)
  • This type of behavior has been inferred for A. africanus based on mathematical stress analysis and aspects of dental wear and morphology. (jove.com)
  • The Dental 3D Printing Market a new research report released by MarketResearchFuture.com report analyzes the Global Market 2019 economy status through various segments of the with size expansion and growth status - forecast to 2023. (medgadget.com)
  • Despite increased popularity of Zirconia dental implants, concerns have been raised regarding low temperature degradation (LTD) and its effect on micro-structural integrity. (nih.gov)
  • Keywords: Dental, Zirconia, Graded, Aging, Biocompatibility Background thermal expansion coefficient and elastic modulus be- Dental zirconia-based ceramics (e.g., 3 mol% yttrium- tween the zirconia cores and veneering ceramics [4]. (deepdyve.com)
  • Innovation, in turn, leads to better control of dental movement, given that one of the greatest challenges faced by the orthodontist is to come up with mechanical solutions to stimulate biological reactions of the periodontium without compromising treatment outcomes. (scielo.br)
  • Biological and functional performance of small diameter dental implants with different surface treatments in total edentulous patients. (straumann.com)
  • The Colonial Mochica indeed experienced increased biological stress. (osu.edu)
  • This research tells the story of a group of Andean people, who, despite unprecedented biological stress, adapted to the Colonial reality through ethnogenesis: the creation of a new kind of society, grounded in a process of local biological hybridization paralleled by cultural hybridization with European customs and religion. (osu.edu)
  • Completion of genome analysis has brought the post-genome era, enabling applications for biological and medical purposes. (royalsocietypublishing.org)
  • Results identified greater stress on the region of the apex of premolars in both analyzed models. (bvsalud.org)
  • Decision making among Swedish general dental practitioners concerning prosthodontic treatment planning in a shortened dental arch. (helsinki.fi)
  • Alkylation stress response mechanisms also occur in Mycobacterium tuberculosis (MTB) the pat. (bioportfolio.com)
  • 7 ] Reduced irradiation intensity within the early stages of polymerization is assumed to let stress relaxation occur before vitrification. (pubmedcentralcanada.ca)
  • Higher stress concentration is provided to all system as the misfit increases. (scielo.br)
  • Application for distally truncated femur at middle-position and low-position was much better, while stress concentration was marked at high-position. (scientific.net)
  • 1 Department of Prosthodontics, Graduate School of Clinical Dental Science, The Catholic University of Korea, Korea. (koreamed.org)
  • Rehabilitations associated to osseointegrated dental implants have been pointed as the best treatment choice for edentulous patients. (scielo.br)
  • 2010. [X-ray analysis on 114 patients with moderate endemic skeletal fluorosis by treatment of Guo's Chinese herbal]. (fluoridealert.org)
  • Traumatic dental injuries are emergencies that must be treated promptly and properly in order to reduce the suffering, costs, and time for patients, parents, and health care providers. (semanticscholar.org)
  • If any complication can arise from any dental procedure, patients who exhibit the symptoms of TMD will probably have that complication! (doctorspiller.com)
  • Family caregivers of older adults with dementia are less stressed and their moods are improved on days when dementia patients receive adult day services (ADS), according to Penn State researchers. (bio-medicine.org)
  • However this analysis concerns potential risks of transmission amongst the generality of patients, where instruments might unknowingly be used on someone incubating vCJD. (dentalindia.com)
  • The chiropractic approach to healthcare is holistic, stressing the patient's overall health and wellness. (chirobase.org)
  • Other occupations connected to healthcare profession in the top ten include nurses, hospital consultants and dental surgeons. (lexology.com)
  • Dr. Villarraga has experience in identifying scientifically justifiable methodologies for assessment of medical device performance, evaluating quality control issues as applied to medical devices and pharmaceuticals, medical device quality systems compliance (gap analysis), contamination, manufacturing compliance, and finished device evaluations. (exponent.com)
  • The masticatory forces exhibit a more significant influence on the stress than all the other parameters. (edu.au)
  • Effects of vertical interarch space and abutment height on stress distributions: a 3D finite element analysis. (helsinki.fi)
  • One of the issues associated with the restorative procedure is cavity configuration factor or C-factor that is directly related to stress and is defined as restoration's bonded-to-unbonded ratio. (pubmedcentralcanada.ca)
  • Journal Article] Adrenergic Urticaria and Glossalgia Induced by Stress during Dental Therapy and Monitored by Heart Rate Variability Analysis: A Case Report. (nii.ac.jp)
  • Journal of the American Dental Association. (fluoridealert.org)
  • Journal of International Dental and Medical Research. (elsevier.com)
  • KoreaMed, a service of the Korean Association of Medical Journal Editors (KAMJE), provides access to articles published in Korean medical, dental, nursing, nutrition and veterinary journals. (koreamed.org)