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)
The complement of teeth in the jaws after the eruption of some of the permanent teeth but before all the deciduous teeth are absent. (Boucher's Clinical Dental Terminology, 4th ed)
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 teeth of the first dentition, which are shed and replaced by the permanent teeth.
One of a set of bone-like structures in the mouth used for biting and chewing.
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)
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)
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.
Congenital absence of or defects in structures of the teeth.
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)
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)
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.
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)
The study of the teeth of early forms of life through fossil remains.
The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.
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).
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.
The predisposition to tooth decay (DENTAL CARIES).
Congenital absence of the teeth; it may involve all (total anodontia) or only some of the teeth (partial anodontia, hypodontia), and both the deciduous and the permanent dentition, or only teeth of the permanent dentition. (Dorland, 27th ed)
Measurement of tooth characteristics.
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.
The emergence of a tooth from within its follicle in the ALVEOLAR PROCESS of the MAXILLA or MANDIBLE into the ORAL CAVITY. (Boucher's Clinical Dental Terminology, 4th ed)
Presentation devices used for patient education and technique training in dentistry.
The upper part of the tooth, which joins the lower part of the tooth (TOOTH ROOT) at the cervix (TOOTH CERVIX) at a line called the cementoenamel junction. The entire surface of the crown is covered with enamel which is thicker at the extremity and becomes progressively thinner toward the cervix. (From Jablonski, Dictionary of Dentistry, 1992, p216)
An abnormal opening or fissure between two adjacent teeth.
A normal developing tooth which has not yet perforated the oral mucosa or one that fails to erupt in the normal sequence or time interval expected for the type of tooth in a given gender, age, or population group.
"Decayed, missing and filled teeth," a routinely used statistical concept in dentistry.
Recognition and elimination of potential irregularities and malpositions in the developing dentofacial complex.
An orthodontic method used for correcting narrow or collapsed maxillary arches and functional cross-bite. (From Jablonski's Dictionary of Dentistry),
The measurement of the dimensions of the HEAD.
Two teeth united during development by the union of their tooth germs; the teeth may be joined by the enamel of their crowns, by their root dentin, or by both.
One of the eight permanent teeth, two on either side in each jaw, between the canines (CUSPID) and the molars (MOLAR), serving for grinding and crushing food. The upper have two cusps (bicuspid) but the lower have one to three. (Jablonski, Dictionary of Dentistry, 1992, p822)
Selective grinding of occlusal surfaces of the teeth in an effort to eliminate premature contacts and occlusal interferences; to establish optimal masticatory effectiveness, stable occlusal relationships, direction of main occlusal forces, and efficient multidirectional patterns, to improve functional relations and to induce physiologic stimulation of the masticatory system; to eliminate occlusal trauma; to eliminate abnormal muscle tension; to aid in the stabilization of orthodontic results; to treat periodontal and temporomandibular joint problems; and in restorative procedures. (From Jablonski, Dictionary of Dentistry, 1992)
Sucking of the finger. This is one of the most common manipulations of the body found in young children.
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)
An extra tooth, erupted or unerupted, resembling or unlike the other teeth in the group to which it belongs. Its presence may cause malposition of adjacent teeth or prevent their eruption.
The planning, calculation, and creation of an apparatus for the purpose of correcting the placement or straightening of teeth.
The process of growth and differentiation of the jaws and face.
A registration of any positional relationship of the mandible in reference to the maxillae. These records may be any of the many vertical, horizontal, or orientation relations. (Jablonski, Illustrated Dictionary of Dentistry)
Remains, impressions, or traces of animals or plants of past geological times which have been preserved in the earth's crust.
The application of dental knowledge to questions of law.
A means of identifying the age of an animal or human through tooth examination.
Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film.
The thickest and spongiest part of the maxilla and mandible hollowed out into deep cavities for the teeth.
Loose-fitting removable orthodontic appliances which redirect the pressures of the facial and masticatory muscles onto the teeth and their supporting structures to produce improvements in tooth arrangements and occlusal relations.
Malocclusion in which the mandible is posterior to the maxilla as reflected by the relationship of the first permanent molar (distoclusion).
Contact between opposing teeth during a person's habitual bite.
The phase of orthodontics concerned with the correction of malocclusion with proper appliances and prevention of its sequelae (Jablonski's Illus. Dictionary of Dentistry).
The force applied by the masticatory muscles in dental occlusion.
Any suction exerted by the mouth; response of the mammalian infant to draw milk from the breast. Includes sucking on inanimate objects. Not to be used for thumb sucking, which is indexed under fingersucking.
The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (OVD or VDO) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (VDR) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest position. (From Jablonski, Dictionary of Dentistry, 1992, p250)
Deep grooves or clefts in the surface of teeth equivalent to class 1 cavities in Black's classification of dental caries.
A hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing substance, and surrounded by an enamel sheath. (From Jablonski, Dictionary of Dentistry, 1992, p286)
A condition in which certain opposing teeth fail to establish occlusal contact when the jaws are closed.
Devices used for influencing tooth position. Orthodontic appliances may be classified as fixed or removable, active or retaining, and intraoral or extraoral. (Boucher's Clinical Dental Terminology, 4th ed, p19)
The location of the maxillary and the mandibular condyles when they are in their most posterior and superior positions in their fossae of the temporomandibular joint.
The facial skeleton, consisting of bones situated between the cranial base and the mandibular region. While some consider the facial bones to comprise the hyoid (HYOID BONE), palatine (HARD PALATE), and zygomatic (ZYGOMA) bones, MANDIBLE, and MAXILLA, others include also the lacrimal and nasal bones, inferior nasal concha, and vomer but exclude the hyoid bone. (Jablonski, Dictionary of Dentistry, 1992, p113)
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)
An abnormality in the direction of a TOOTH ERUPTION.
Resorption of calcified dental tissue, involving demineralization due to reversal of the cation exchange and lacunar resorption by osteoclasts. There are two types: external (as a result of tooth pathology) and internal (apparently initiated by a peculiar inflammatory hyperplasia of the pulp). (From Jablonski, Dictionary of Dentistry, 1992, p676)
Devices that babies can suck on when they are not feeding. The extra sucking can be comforting to the babies and pacify them. Pacifiers usually are used as a substitute for the thumb in babies who suck on their thumb or fingers almost constantly.
Extraoral devices for applying force to the dentition in order to avoid some of the problems in anchorage control met with in intermaxillary traction and to apply force in directions not otherwise possible.
A paired box transcription factor that is involved in ODONTOGENESIS.
Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA.
The act and process of chewing and grinding food in the mouth.
A systematic collection of factual data pertaining to dental or oral health and disease in a human population within a given geographic area.
The failure to retain teeth as a result of disease or injury.
Malocclusion in which the mandible is anterior to the maxilla as reflected by the first relationship of the first permanent molar (mesioclusion).
Training or retraining of the buccal, facial, labial, and lingual musculature in toothless conditions; DEGLUTITION DISORDERS; TEMPOROMANDIBULAR JOINT DISORDERS; MALOCCLUSION; and ARTICULATION DISORDERS.
Total lack of teeth through disease or extraction.
Photographic techniques used in ORTHODONTICS; DENTAL ESTHETICS; and patient education.
Technique involving the passage of X-rays through oral structures to create a film record while a central tab or wing of dental X-ray film is being held between upper and lower teeth.
Any change in the hue, color, or translucency of a tooth due to any cause. Restorative filling materials, drugs (both topical and systemic), pulpal necrosis, or hemorrhage may be responsible. (Jablonski, Dictionary of Dentistry, 1992, p253)
A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992)
An apparently hereditary disorder of dentin formation, marked by a normal appearance of coronal dentin associated with pulpal obliteration, faulty root formation, and a tendency for peripheral lesions without obvious cause. (From Dorland, 27th ed)
The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics.
A localized arrested tooth development which appears to involve most commonly the anterior teeth, usually on one side of the midline, most often the maxillary central and lateral incisors. Roentgenographically, the teeth have a ghostlike appearance. Calcification and bits of prismatic enamel may be found in the pulp and the enamel is thin and absent in part. (Jablonski, Illustrated Dictionary of Dentistry, 1982)
Loose, usually removable intra-oral devices which alter the muscle forces against the teeth and craniofacial skeleton. These are dynamic appliances which depend on altered neuromuscular action to effect bony growth and occlusal development. They are usually used in mixed dentition to treat pediatric malocclusions. (ADA, 1992)
A partial denture attached to prepared natural teeth, roots, or implants by cementation.
Rare, autosomal recessive disorder occurring between the first and fifth years of life. It is characterized by palmoplantar keratoderma with periodontitis followed by the premature shedding of both deciduous and permanent teeth. Mutations in the gene for CATHEPSIN C have been associated with this disease.
The SKELETON of the HEAD including the FACIAL BONES and the bones enclosing the BRAIN.
Use of nursing bottles for feeding. Applies to humans and animals.
The wounding of the body or body parts by branding, cutting, piercing (BODY PIERCING), or TATTOOING as a cultural practice or expression of creativity or identity.
The measurement of various aspects of MAGNETIC FIELDS.
Orthodontic movement in the coronal direction achieved by outward tension on the PERIODONTAL LIGAMENT. It does not include the operative procedure that CROWN LENGTHENING involves.
Dental devices such as RETAINERS, ORTHODONTIC used to improve gaps in teeth and structure of the jaws. These devices can be removed and reinserted at will.
Preventive dental services provided for students in primary and secondary schools.
Horizontal and, to a lesser degree, axial movement of a tooth in response to normal forces, as in occlusion. It refers also to the movability of a tooth resulting from loss of all or a portion of its attachment and supportive apparatus, as seen in periodontitis, occlusal trauma, and periodontosis. (From Jablonski, Dictionary of Dentistry, 1992, p507 & Boucher's Clinical Dental Terminology, 4th ed, p313)
Wires of various dimensions and grades made of stainless steel or precious metal. They are used in orthodontic treatment.
The optimal state of the mouth and normal functioning of the organs of the mouth without evidence of disease.
A physical misalignment of the upper (maxilla) and lower (mandibular) jaw bones in which either or both recede relative to the frontal plane of the forehead.
The collective tissues from which an entire tooth is formed, including the DENTAL SAC; ENAMEL ORGAN; and DENTAL PAPILLA. (From Jablonski, Dictionary of Dentistry, 1992)
Endodontic diseases of the DENTAL PULP inside the tooth, which is distinguished from PERIAPICAL DISEASES of the tissue surrounding the root.
Abnormal breathing through the mouth, usually associated with obstructive disorders of the nasal passages.
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.
Orthodontic techniques used to correct the malposition of a single tooth.
Bites inflicted by humans.
The surgical removal of a tooth. (Dorland, 28th ed)
Either one of the two small elongated rectangular bones that together form the bridge of the nose.
Migration of the teeth toward the midline or forward in the DENTAL ARCH. (From Boucher's Clinical Dental Terminology, 4th ed)
A masticatory muscle whose action is closing the jaws; its posterior portion retracts the mandible.
Inflammation of gum tissue (GINGIVA) without loss of connective 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)
The act of cleaning teeth with a brush to remove plaque and prevent tooth decay. (From Webster, 3d ed)
Either of a pair of bones that form the prominent part of the CHEEK and contribute to the ORBIT on each side of the SKULL.
A dental specialty concerned with the prevention and correction of dental and oral anomalies (malocclusion).
Partial or complete displacement of a tooth from its alveolar support. It is commonly the result of trauma. (From Boucher's Clinical Dental Terminology, 4th ed, p312)
Acquired responses regularly manifested by tongue movement or positioning.
The process of converting analog data such as continually measured voltage to discrete, digital form.
Family of the suborder HAPLORHINI (Anthropoidea) comprising bipedal primate MAMMALS. It includes modern man (HOMO SAPIENS) and the great apes: gorillas (GORILLA GORILLA), chimpanzees (PAN PANISCUS and PAN TROGLODYTES), and orangutans (PONGO PYGMAEUS).
The study of early forms of life through fossil remains.
Surgical procedures used to treat disease, injuries, and defects of the oral and maxillofacial region.
The mouth, teeth, jaws, pharynx, and related structures as they relate to mastication, deglutition, and speech.
The structure that forms the roof of the mouth. It consists of the anterior hard palate (PALATE, HARD) and the posterior soft palate (PALATE, SOFT).
The wearing away of a tooth as a result of tooth-to-tooth contact, as in mastication, occurring only on the occlusal, incisal, and proximal surfaces. It is chiefly associated with aging. It is differentiated from TOOTH ABRASION (the pathologic wearing away of the tooth substance by friction, as brushing, bruxism, clenching, and other mechanical causes) and from TOOTH EROSION (the loss of substance caused by chemical action without bacterial action). (Jablonski, Dictionary of Dentistry, 1992, p86)
Malocclusion in which the mandible and maxilla are anteroposteriorly normal as reflected by the relationship of the first permanent molar (i.e., in neutroclusion), but in which individual teeth are abnormally related to each other.
Scientific study of human skeletal remains with the express purpose of identification. This includes establishing individual identity, trauma analysis, facial reconstruction, photographic superimposition, determination of time interval since death, and crime-scene recovery. Forensic anthropologists do not certify cause of death but provide data to assist in determination of probable cause. This is a branch of the field of physical anthropology and qualified individuals are certified by the American Board of Forensic Anthropology. (From Am J Forensic Med Pathol 1992 Jun;13(2):146)
Conservative contouring of the alveolar process, in preparation for immediate or future denture construction. (Dorland, 28th ed)
The fibrous CONNECTIVE TISSUE surrounding the TOOTH ROOT, separating it from and attaching it to the alveolar bone (ALVEOLAR PROCESS).
A tooth that is prevented from erupting by a physical barrier, usually other teeth. Impaction may also result from orientation of the tooth in an other than vertical position in the periodontal structures.
An index which scores the degree of dental plaque accumulation.
Facilities which provide care for infants.
The science devoted to the comparative study of man.
The practice of personal hygiene of the mouth. It includes the maintenance of oral cleanliness, tissue tone, and general preservation of oral health.
The plan, delineation, and location of actual structural elements of dentures. The design can relate to retainers, stress-breakers, occlusal rests, flanges, framework, lingual or palatal bars, reciprocal arms, etc.
Agents used to occlude dental enamel pits and fissures in the prevention of dental caries.
Limbless REPTILES of the suborder Serpentes.
Traumatic or other damage to teeth including fractures (TOOTH FRACTURES) or displacements (TOOTH LUXATION).
Transmembrane proteins belonging to the tumor necrosis factor superfamily that play an essential role in the normal development of several ectodermally derived organs. Several isoforms of the ectodysplasins exist due to multiple ALTERNATIVE SPLICING of the MRNA for the protein. The isoforms ectodysplasin A1 and ectodysplasin A2 are considered biologically active and each bind distinct ECTODYSPLASIN RECEPTORS. Genetic mutations that result in loss of function of ectodysplasin result in ECTODERMAL DYSPLASIA 1, ANHIDROTIC.
Anomaly of the tooth, found chiefly in upper lateral incisors. It is characterized by invagination of the enamel at the incisal edge.
Created 7 April 1992 as a result of the division of Yugoslavia.
The hard portion of the tooth surrounding the pulp, covered by enamel on the crown and cementum on the root, which is harder and denser than bone but softer than enamel, and is thus readily abraded when left unprotected. (From Jablonski, Dictionary of Dentistry, 1992)
A geographical area of the United States with no definite boundaries but comprising northeastern Alabama, northwestern Georgia, northwestern South Carolina, western North Carolina, eastern Kentucky, eastern Tennessee, western Virginia, West Virginia, western Maryland, southwestern Pennsylvania, southern Ohio, and southern New York.
General name for two extinct orders of reptiles from the Mesozoic era: Saurischia and Ornithischia.
The inferior region of the skull consisting of an internal (cerebral), and an external (basilar) surface.
Dental procedure in which the entire pulp chamber is removed from the crown and roots of a tooth.
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)
Most common follicular odontogenic cyst. Occurs in relation to a partially erupted or unerupted tooth with at least the crown of the tooth to which the cyst is attached protruding into the cystic cavity. May give rise to an ameloblastoma and, in rare instances, undergo malignant transformation.
A numerical rating scale for classifying the periodontal status of a person or population with a single figure which takes into consideration prevalence as well as severity of the condition. It is based upon probe measurement of periodontal pockets and on gingival tissue status.
Fluorides, usually in pastes or gels, used for topical application to reduce the incidence of DENTAL CARIES.
A masticatory muscle whose action is closing the jaws.
Physiologic loss of the primary dentition. (Zwemer, Boucher's Clinical Dental Terminology, 4th ed)
A malocclusion in which maxillary incisor and canine teeth project over the mandiblar teeth excessively. The overlap is measured perpendicular to the occlusal plane and is also called vertical overlap. When the overlap is measured parallel to the occlusal plane it is referred to as overjet.
The anteriorly located rigid section of the PALATE.
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.
Resorption in which cementum or dentin is lost from the root of a tooth owing to cementoclastic or osteoclastic activity in conditions such as trauma of occlusion or neoplasms. (Dorland, 27th ed)
A group of hereditary disorders involving tissues and structures derived from the embryonic ectoderm. They are characterized by the presence of abnormalities at birth and involvement of both the epidermis and skin appendages. They are generally nonprogressive and diffuse. Various forms exist, including anhidrotic and hidrotic dysplasias, FOCAL DERMAL HYPOPLASIA, and aplasia cutis congenita.
Usually a written medical and nursing care program designed for a particular patient.
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions for use in restorative or prosthetic dentistry.
X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range.
Radiographic techniques used in dentistry.
Congenital defect in the upper lip where the maxillary prominence fails to merge with the merged medial nasal prominences. It is thought to be caused by faulty migration of the mesoderm in the head region.
Substances that inhibit or arrest DENTAL CARIES formation. (Boucher's Clinical Dental Terminology, 4th ed)
Pain in the adjacent areas of the teeth.
The recording of images in three-dimensional form on a photographic film by exposing it to a laser beam reflected from the object under study.
Treatment for the prevention of periodontal diseases or other dental diseases by the cleaning of the teeth in the dental office using the procedures of DENTAL SCALING and DENTAL POLISHING. The treatment may include plaque detection, removal of supra- and subgingival plaque and calculus, application of caries-preventing agents, checking of restorations and prostheses and correcting overhanging margins and proximal contours of restorations, and checking for signs of food impaction.
The constricted part of the tooth at the junction of the crown and root or roots. It is often referred to as the cementoenamel junction (CEJ), the line at which the cementum covering the root of a tooth and the enamel of the tooth meet. (Jablonski, Dictionary of Dentistry, 1992, p530, p433)
Warm-blooded vertebrate animals belonging to the class Mammalia, including all that possess hair and suckle their young.
Hospital department providing dental care.
A homeodomain protein that interacts with TATA-BOX BINDING PROTEIN. It represses GENETIC TRANSCRIPTION of target GENES and plays a critical role in ODONTOGENESIS.
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)
Small metal or ceramic attachments used to fasten an arch wire. These attachments are soldered or welded to an orthodontic band or cemented directly onto the teeth. Bowles brackets, edgewise brackets, multiphase brackets, ribbon arch brackets, twin-wire brackets, and universal brackets are all types of orthodontic brackets.
Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed)
The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.
Congenital fissure of the soft and/or hard palate, due to faulty fusion.
Dentifrices that are formulated into a paste form. They typically contain abrasives, HUMECTANTS; DETERGENTS; FLAVORING AGENTS; and CARIOSTATIC AGENTS.
The space in a tooth bounded by the dentin and containing the dental pulp. The portion of the cavity within the crown of the tooth is the pulp chamber; the portion within the root is the pulp canal or root canal.
A commonly used prosthesis that results in a strong, permanent restoration. It consists of an electrolytically etched cast-metal retainer that is cemented (bonded), using resins, to adjacent teeth whose enamel was previously acid-treated (acid-etched). This type of bridgework is sometimes referred to as a Maryland bridge.
The total absence of teeth from either the mandible or the maxilla, but not both. Total absence of teeth from both is MOUTH, EDENTULOUS. Partial absence of teeth in either is JAW, EDENTULOUS, PARTIALLY.
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.

A modern human pattern of dental development in lower pleistocene hominids from Atapuerca-TD6 (Spain). (1/163)

The study of life history evolution in hominids is crucial for the discernment of when and why humans have acquired our unique maturational pattern. Because the development of dentition is critically integrated into the life cycle in mammals, the determination of the time and pattern of dental development represents an appropriate method to infer changes in life history variables that occurred during hominid evolution. Here we present evidence derived from Lower Pleistocene human fossil remains recovered from the TD6 level (Aurora stratum) of the Gran Dolina site in the Sierra de Atapuerca, northern Spain. These hominids present a pattern of development similar to that of Homo sapiens, although some aspects (e.g., delayed M3 calcification) are not as derived as that of European populations and people of European origin. This evidence, taken together with the present knowledge of cranial capacity of these and other late Early Pleistocene hominids, supports the view that as early as 0.8 Ma at least one Homo species shared with modern humans a prolonged pattern of maturation.  (+info)

Australopithecus garhi: a new species of early hominid from Ethiopia. (2/163)

The lack of an adequate hominid fossil record in eastern Africa between 2 and 3 million years ago (Ma) has hampered investigations of early hominid phylogeny. Discovery of 2.5 Ma hominid cranial and dental remains from the Hata beds of Ethiopia's Middle Awash allows recognition of a new species of Australopithecus. This species is descended from Australopithecus afarensis and is a candidate ancestor for early Homo. Contemporary postcranial remains feature a derived humanlike humeral/femoral ratio and an apelike upper arm-to-lower arm ratio.  (+info)

Equatorius: a new hominoid genus from the Middle Miocene of Kenya. (3/163)

A partial hominoid skeleton just older than 15 million years from sediments in the Tugen Hills of north central Kenya mandates a revision of the hominoid genus Kenyapithecus, a possible early member of the great ape-human clade. The Tugen Hills specimen represents a new genus, which also incorporates all material previously referable to Kenyapithecus africanus. The new taxon is derived with respect to earlier Miocene hominoids but is primitive with respect to the younger species Kenyapithecus wickeri and therefore is a late member of the stem hominoid radiation in the East African Miocene.  (+info)

A new primate from the Middle Eocene of Myanmar and the Asian early origin of anthropoids. (4/163)

A new genus and species of anthropoid primate, Bahinia pondaungensis gen. et sp. nov., is described from the Yashe Kyitchaung locality in the Late Middle Eocene Pondaung Formation (Myanmar). It is related to Eosimias, but it is represented by more complete remains, including upper dentition with associated lower jaw fragment. It is interpreted as a new representative of the family Eosimiidae, which corresponds to the sister group of the Amphipithecidae and of all other anthropoids. Eosimiidae are now recorded from three distinct Middle Eocene localities in Asia, giving support to the hypothesis of an Asian origin of anthropoids.  (+info)

Widanelfarasia, a diminutive placental from the late Eocene of Egypt. (5/163)

The lower dentition of Widanelfarasia (new genus), a diminutive late Eocene placental from the Fayum Depression in Egypt, is described. Widanelfarasia exhibits a complex of features associated with incipient zalambdodonty and at least three unequivocal apomorphies [loss of P(1), an enlarged I(2) (relative to I(3)), and a basal cusp on I(2)], which provide weak support for its placement as a possible sister taxon of either a tenrecid-chrysochlorid clade or of solenodontids. The former hypothesis gains additional support from biogeographical evidence, but both scenarios are currently tenuous as Widanelfarasia is clearly not truly zalambdodont. Phylogenetic hypotheses positing affinities with tenrecids alone or chrysochlorids alone must invoke either convergent acquisition of zalambdodonty in these taxa or autapomorphic reversal in Widanelfarasia. Given these considerations, a relationship with more generalized taxa from the Laurasian Paleogene (e.g., geolabidids, nyctitheriids, leptictids) cannot yet be ruled out. Comparisons with other Paleogene Afro-Arabian forms are generally inconclusive. A relationship with the earlier Eocene Chambilestes from Tunisia-currently represented by a single specimen preserving P(4)-M(3)-seems possible based on the geometry and predicted occlusal relationships of these teeth, but cannot be confidently determined until these two taxa come to be represented by common diagnostic elements. Todralestes (late Paleocene, Morocco) exhibits general phenetic similarities to Widanelfarasia, but it is not yet known whether this taxon shares any of Widanelfarasia's unequivocal dental apomorphies. Pending the recovery of more informative material, we tentatively refer Widanelfarasia to Placentalia incertae sedis. Truly zalambdodont placentals remain conspicuously absent from the Paleogene of Afro-Arabia.  (+info)

Linking development with generation of novelty in mammalian teeth. (6/163)

The evolution of mammalian teeth is characterized by the frequent and convergent evolution of new cusps. The evolution of new cusps can be linked to tooth development via population-level variation. This allows testing whether development increases the capacity to evolve, or evolvability, by facilitating and even directing morphological change. In a population sample of living seals, variation in cusp number of individual teeth is from three to five cusps, the variably present cusps being the shortest ones that also develop last. By factoring in recent evidence on development, I show that the variation in cusp number can be explained by a patterning cascade mode of cusp development that cumulatively increases and directs height variation in short cusps. The biased variation in seal tooth cusps supports the recognition of teeth as highly evolvable because only small developmental changes are needed to produce large changes in size and number of small cusps. This evolvability of tooth cusps may have facilitated the fast and independent acquisition of new cusps in mammalian evolution. In phylogenetic studies, small cusps may be unreliable as phylogenetic signals. Population level variation can be a powerful tool in testing and generating hypotheses in developmental evolution studies.  (+info)

Oral hygiene, dentition, sexual habits and risk of oral cancer. (7/163)

In an Italian case-control study of oral cancer, number of missing teeth and other aspects of dental care were similar, but the general condition of the mouth, as indicated by gum bleeding, tartar deposits and mucosal irritation, was worse among oral cancer cases than controls. No differences were detected in sexual practices (including oral sex) and (previous) sexually transmitted infections.  (+info)

Dynamics of tooth formation and replacement in the zebrafish (Danio rerio) (Teleostei, Cyprinidae). (8/163)

We have used three-dimensional reconstructions from serial sections as well as cleared and stained specimens to infer patterning of the pharyngeal dentition throughout ontogeny in the zebrafish. Each pharyngeal tooth has been monitored from its initiation to its complete disappearance (resorption and shedding). We have identified tooth families and have studied the persistence of the pattern through successive replacements. Teeth arise in two seemingly independent clusters, a ventral and a dorsal cluster, with differing patterning features. The ventral cluster consists of one row of five teeth in which a tooth is first initiated in position four, and subsequent teeth in adjacent positions, posterior and anterior to it. Replacement teeth in odd and even positions are initiated simultaneously during successive odontogenic waves but differ in generation number according to the timing of appearance of the first-generation tooth, i.e., the founder of the tooth family. Up to four teeth of a single tooth family are simultaneously present in early juveniles of which two are usually "co-functional." The number of teeth per tooth family is reduced in older juveniles and adults, reflecting a slowing down of the replacement rate. The consistent way in which the pattern is established and maintained during ontogeny calls for research of the presence of specific molecular controls.  (+info)

Solution for question: Given the Dental Formula of Human Beings concept: Digestive System - Alimentary Canal. For the courses CBSE (Arts), CBSE (Commerce), CBSE (Science)
The evolution of tribosphenic molars is a key innovation in the history of Mammalia. Tribospheny allows for both shearing and grinding occlusal functions. Marsupials and placentals are advanced tribosphenic mammals (i.e., Theria) that show additional modifications of the tribosphenic dentition inclu …
Conodonts are chordates that resembled eels. The entire class of conodonts was wiped out by the Triassic-Jurassic extinction event, which occurred 200 million years ago.. Researchers used X-rays to create computer models of the eight paired, food-processing structures from fossils of the Wurmiella excavata. The tips of the teeth are just 2 micrometers across. Using finite-element analysis, which uses numerical analysis to approximate the solutions of partial differential equations, the scientists compared conodont teeth with similar-sized bat molars. The findings were published in the journal Proceedings of The Royal Society B.. Conodonts relied on minuscule forces that were concentrated because of the extreme sharpness of their teeth. They didnt use muscular force as mammals do and conodont teeth sliced from left to right, instead of up and down. The sharpness would have made the teeth brittle, but conodonts may have been able to re-sharpen them, a quality that other vertebrates have failed to ...
Looking for natural dentition? Find out information about natural dentition. kind, number, and arrangement of the teeth teeth, hard, calcified structures embedded in the bone of the jaws of vertebrates that perform the primary... Explanation of natural dentition
Conodonts across the Devonian/Carboniferous boundary: a review and implication for the redefinition of the boundary and a proposal for an updated conodont zonation - Volume 154 Issue 4 - CARLO CORRADINI, CLAUDIA SPALLETTA, ANGELO MOSSONI, HANNA MATYJA, D. JEFFREY OVER
For a person who has been looking for beauty and pure perfection this could just be the right door for you. They are cut to exactly fit your space and are purely white therefore in case you want to get that perfect smile this could be the path you have been looking for. A lot of people use them for beauty purposes thus helping them have that perfect dental formula ...
Dr. John Flutter, BDS. To understand how the dentition, the teeth and jaws, affects sporting performance, sporting endurance and sports injury susceptibility we need to understand some basic cranial anatomy and neurology.. ...
Trovi tutti i libri di Cope, Edward Drinker - On the Tritubercular Molar in Human Dentition (1888). Su it.eurobuch.ch puoi confrontare libri antichi e libri nuovi e ordinarli subito al prezzo più conveniente. 9781162103402
Method and system for providing an orthodontic profile indexing and treatment plan including comparing an initial patient condition in each of a plurality of dentition categories with one or more reference conditions in each of the plurality of dentition categories, wherein each of the one or more reference conditions has a corresponding representation, selecting at least one reference condition in one or more of the plurality of dentition categories, where each selected reference condition is similar to the initial patient condition in a same dentition category, and generating a patient identifier based on the corresponding representations of each selected reference condition is provided.
A tiny fossil found more than 10 years ago in central Alberta has prov...Back in 1991 Dr. Richard Fox and his research team found a 60 million... Our discovery shows that mammals have been much more flexible in the ...About the size of a mouse the ancient mammal--Bisonalveus browni--may...Currently there are two types of living mammals with salivary venom-i...,Researchers,find,first,evidence,of,venom,system,in,extinct,mammal,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters
Vous ne pouvez pas vous connecter sans courriel! Vérifiez votre compte social et donnez la permission dutiliser vos informations de courrier électronique  Vous ne pouvez pas vous connecter! Contactez-nous ou essayez de vous connecter dune autre manière  Enregistrement terminé! Merci de vous être connecté à Fun * das bcn ...
Welcome back! You may not know, but you are able to get perishable items from any place in Canada (outside Montreal). The website will calculate automatically your PRIORITY SHIPPING. The ice packs and insulated material is on us. REMEMBER THAT OUR FREE SHIPPING OVER $120 is eligible for non perishable items until Winter time. Click here for full details. ...
Mike - Outstanding wedding. Patti and I had a great time and loved the food. It was well worth the trip. Sorry to take so long in rennosdipg, i didnt notice this untill now. I was just checking out the pics again.Good luck to both of you and hope to see you guys during some holiday.May 26, 2012 4:11 pm. ...
Achetez les Anneaux de dentition MAM adaptés aux bébés, qui permettent de soulager les poussées dentaires et déveiller votre enfants.
ermöglichen die Korrektur von Störungen bei Kindern mit gemischter Dentition vor der orthodontischen Behandlung; zum Angewöhnen der Nasenatmung, des korrekten Schluckens und der korrekten Zungenlage im Mundraum; ...
Several well-preserved jaws of the rare North American omomyid primate Steinius vespertinus, including the first known antemolar dentitions, have been discovered in 1989 and 1990 in the early Eocene Willwood Formation of the Bighorn Basin, Wyoming. They indicate that its dental formula is as primitive as those in early Eocene Donrussellia (Adapidae) and Teilhardina (Omomyidae) - widely considered to be the most primitive known euprimates - and that in various dental characters Steinius is as primitive or more so than Teilhardina. Therefore, despite its occurrence at least 2 million years later than Teilhardina, S. vespertinus is the most primitive known omomyid and one of the most primitive known euprimates. Its primitive morphology further diminishes the dental distinctions between Omomyidae and Adapidae at the beginning of the euprimate radiation.
There has been very few documented case of unilateral supplemental lateral incisors. A case with unilateral supplemental permanent maxillary lateral incisor is presented. The etiology, types and treatment alternatives are discussed
What is Mixed Dentition? Mixed Dentition is the situation when both deciduous and permanent teeth are present. Save on dental care procedures with a dental plan.
A positive mold for use in creating an orthodontic appliance is produced by obtaining a digital dentition model, such as a 3D geometric surface model or a 3D volumetric image model, that defines the shape of an orthodontic appliance and then altering the digital dentition model to remove a portion that does not affect the shape of the orthodontic appliance. The altered digital dentition model then is used to construct a positive mold for the orthodontic appliance. Processing circuitry, such as a programmed computer, is used to obtain and alter the digital dentition model. A rapid prototyping device, such as a stereolithography machine, is commonly used to construct the positive mold.
The fossil record of conodonts may be among the best of any group of organisms, but it is biased nonetheless. Pre- and syndepositional biases, including predation and scavenging of carcasses, current activity, reworking and bioturbation, cause loss, redistribution and breakage of elements. These biases may be exacerbated by the way in which rocks are collected and treated in the laboratory to extract elements. As is the case for all fossils, intervals for which there is no rock record cause inevitable gaps in the stratigraphic distribution of conodonts, and unpreserved environments lead to further impoverishment of the recorded spatial and temporal distributions of taxa. On the other hand, because they are resistant to abrasion and can withstand considerable metamorphism conodonts can preserve evidence of otherwise lost sequences or environments through reworking.. We have conducted a preliminary investigation into how the various forms of gross collecting bias arising from period to period ...
European society for parenteral about clomid and enteral feedings until the upper and lower dentition. Specify the type of inserted cannula. The sphenoid sinus superior nasal meatus to avoid nocturnal hypoglycemia. Instruct patient on stairs, use of inferior vena cava (ivc) filters are indicated to accomplish a monobloc resection. 5. Deprives tumor of the magnetic resonance imaging scan helps confirm invasion of the. Nursing care should be questioned if patients condition indicates. Journal of pediatrics, 245, 6367. Light perception only. There is no standardized vitamin regimen. Figure 5. 221 the pharynx and esophagus figure 6. 16 squamous cell carcinoma, adenocarcinoma, and large head-to-height ratios in both genders and people with visual acuity and nutritional deficiencies, use of caffeine intake during exercise because of age, and every attempt to increase absorption, for short-term prevention following surgery shows satisfactory primary healing of the mandible shows that the patient may be ...
Like other members of its family, Microgale gracilis retains many primitive traits, including a low and seasonally variable body temperature, a cloaca (common opening for the urogenital, anal and reproductive tracts) and testes that are undescended in the male. Microgale gracilis is shrew-like in appearance and many of its morphological features suggest that it is semi-fossorial. This species is characterized by an elongate skull, long rostrum and rhinarium, dense, velvety pelage, reduced eyes and ears, short forelimbs with broadened forefeet, and enlarged claws with five digits. The tail is shorter than the head/body length. Individuals have dark-brown dorsal pelage with buff speckles, and dark grey ventral pelage with a buff wash. The tail is bicoloured, dark brown dorsally and light brown ventrally. Juveniles appear less speckled than adults, particularly posteriorly. The dentition is much reduced in size with slender canines and incisors. The adult dental formula of M. gracilis is I3/3, ...
Trechnotheria is a group of mammals that includes the therians and some fossil mammals from the Mesozoic Era. In the Jurassic through Cretaceous periods, the group was endemic to what would be Asia and Africa. Trechnotheria has been assigned various ranks, but was originally called a superlegion by the original author. One reference has defined the Trechnotheria as the clade comprising the last common ancestor of Zhangheotherium and living therian mammals, and all its descendants. Like most Mesozoic mammal groups, early trechnotherians are known mainly from their teeth. Hence, one of the most prominent features of this group is the hypertrophied postvallum/prevallid shearing mechanism, along with other dental characters. Features of the shoulder blade, tibia, humerus, and ankle joint also diagnose this clade. A cladogram compiled by Mikko Haaramo and based on individual cladograms of after After Luo, Cifelli & Kielan-Jaworowska, 2001, Luo, Kielan-Jaworowska & Cifelli, 2002 and, ...
But maybe the show could have retained some use if all of this human-like/fictional appearance and behavior was there to illustrate some greater true scientific fact, that even network execs think viewers could remember. Alas, no. The implication of the Eoraptor portion was that dinosaur success was due to more complex parental care, but my impression has been that evidence for such care is limited to maniraptorans, supposed evidence for care in hadrosaurs (and thus Ornithischia) has been refuted, and that baby sauropods were too small to associate with adults and arent apparent in herd trackways. And even the mosasaur cares for its babies enough to get revenge on sharks for eating them (vengeance is such a widespread trait in squamates...). As does the Cretaceous mammal, more realistically. If you want to make the point dinosaurs were probably often brightly colored with display structures as the Gigantoraptor portion tries to, a far superior method would be to show say ten different ...
How to Regain Good Dental Formula. There is a significant portion of the country population who have had to persevere dental related appearance challenges. Stained dentals and poor arrangement of teeth are just but some examples of the abnormalities. Failure to understand that the problem can be solved is the primary reason many people have accepted to live with those conditions. Price consideration has also forced a significant number to shy away from visiting dental experts often giving away ones health for money. One should never be deceived to think that saving some dollars can keep one away from dental complications.. Anyone can be a candidate of teeth problems that affect looks or prevent one from having a real smile. An individual who has ever been affected by dental challenges can tell the story. These complications may also affect a close family member or a friend. In this piece of writing, there is a description of various forms of assistance one can obtain from a cosmetic ...
Nesomyines are characterized by their morphological and ecological diversity. Typically they are medium to large gerbil-like, vole-like, or rat-like rodents. They measure 80 to 350 mm in head and body length and their tails range from 60 to 250 mm. Nesomyines weigh 21 to 1,500 grams. In some species, females weigh less than males, in other species, there is no sexual dimorphism. Nesomyine tails are short to long, naked to moderately furred, and sometimes tufted. Some have prehensile tails. The hind feet range from wide and short to narrow and long, and most have no hair on the soles. The pelage is long and soft or thick and woolly. It is sandy brown, reddish, or gray on the dorsum and yellowish white, white, or gray on the venter. Most nesomyines have large eyes and prominent ears and whiskers.. The nesomyine dental formula is 1/1, 0/0, 0/0, 3/3 = 16. The incisors are opisthodont. The molars are rooted, have a biserial cusp arrangement, and range from brachydont to hypsodont. In most species, ...
With the exception of the maras, which have a more rabbit-like appearance, caviids have short, heavy bodies and large heads. Most have no visible tails. They range in size from the smaller cavies at 22 cm in body length, and 300 grams in weight, up to the capybara, the largest of all rodents at 106 to 134 cm in length, and body weights of 35 to 66 kilograms. Even larger forms existed in the Pliocene, such as Phugatherium, which was about the size of a tapir.[1] They are herbivores, eating tough grasses or softer leaves, depending on species. The dental formula is similar to that of various other rodents: 1.0.1.31.0.1.3. Females give birth to two or three furred and active young after a gestation period of 50 to 90 days in most species, or 150 days in the capybara. In most species, they are sexually mature within a few months of birth, although in capybaras, maturity is not reached until around 18 months.[2] Social organisation varies widely among the group. Many cavies are promiscuous, forming ...
The permanent dentition is formed by thirty-two teeth, sixteen upper and sixteen lower; these are called: central incisors; lateral incisors; canines; first
This study examined the distances between the facial and palatal papillae (DFPP) in the maxillary anterior dentition. A total of 360 filled interdental papillae in 72 study models were examined (Group A: 36 young patients, Group B: 36 adult patients)
Dental caries is a process that typically keeps recurring throughout life, and the consequences are too often seen as irreversible damage to the dentition. At various stages of life, different parts o
Watch this webinar to learn the goals of every finished equilibration, tips for how to effectively equilibrate natural dentition, and materials to use during equilibrations.
Mouth teeth gum realistic dental 3D Model available on Turbo Squid, the worlds leading provider of digital 3D models for visualization, films, television, and games.
Systems and methods are disclosed for generating a 3D model of an object using one or more cameras by: calibrating each camera; establishing a coordinate system and environment for the one or more cameras; registering one or more fiducials on the object; and capturing one or more images and constructing a 3D model from images.
Mock-up is not always a tool for aesthetic outcome, it is an excellent predictor of the functional result and an excellent guide for minimal invasive preparatio...
Fry BG, Winter K, Norman JA, Roelants K, Nabuurs RJ, van Osch MJ, Teeuwisse WM, van der Weerd L, McNaughtan JE, Kwok HF, Scheib H, Greisman L, Kochva E, Miller LJ, Gao F, Karas J, Scanlon D, Lin F, Kuruppu S, Shaw C, Wong L, Hodgson WC. Functional and structural diversification of the Anguimorpha lizard venom system. Mol Cell Proteomics. 2010 Nov; 9(11):2369-90. Epub 2010 Jul 14 ...
Photographs By Patty Berkenbosch Napoleon Nice sturdy two year old male. Masculine head with nice broad skull. Strong muzzle which could be a little longer. Good dentition. Nice brown expressive eyes. Ear set a bit high but with good shape of a masons trowel. Strong neck. Compact body with good angulations both front and rear. Heavy Chest. Strong bone. Pelvis OK. Strong muscles. Feet could be ...
Cure Dentition Teething Bangalore, A2Z Polyclinic, A to Z Polyclinic is a Trusted Polyclinic specializing in Treatment of Dentition Teething located in bangalore offering Treatment Services through Homeopathy, Ayurveda, Naturopathy, Hypnotherapy, Meditation and Modern Medicine.
Views of the dentition can only be achieved using dental retractors as it is necessary to retract the cheeks and lips from the field of view in order to obtain clear intra-oral pictures. Dental retractors are available in metal, wire and plastic and come in paediatric and adult sizes. Dental retractors (if used properly) should provide both vertical clearance as well as horizontal retraction of the lips. Dental mirrors can be used alongside retractors, the mirrors are available in glass and plastic and also in paediatric and adult sizes. There are two main types of dental mirrors, occlusal mirrors are designed to fit inside the patients mouth. The occlusal mirror can be tilted until the reflection of either the upper or lower dentition is visible, the photographer can then photograph the reflected image of the maxillary or mandibular arch. Buccal mirrors are used when photographing the buccal surfaces of the posterior teeth. Buccal mirrors are often double ended and the smaller side can be used ...
Five papers based on Australopithecus sediba have been published in Science on Sept. 9, 2011. They include an analysis of the most complete hand ever described in an early hominin, the most complete undistorted pelvis ever discovered, the highest resolution and most accurate scan of an early human ancestors brain ever made, new pieces of the foot and ankle skeleton, and one of the most accurate dates ever achieved for an early hominin site in Africa ...
The morphology of the lower jaw and teeth of the legless lizard Pseudopus apodus (Anguimorpha, Anguidae, Anguinae) from Eurasia are described in detail and compared with those of other species of the subfamily Anguinae. The lower jaw anatomy of Pseudopus, especially the dentary and teeth, clearly differs from the genera Ophisaurus and Anguis. Even so, Ophisaurus is largely uniform in its lower jaw morphology across species. The teeth of North American Ophisaurus are slender cylinders, the shafts are mesiodistally compressed and bulge lingually; the apices are curved lingually and posteriorly and have weakly developed cutting edges. Southeast Asian and North African Ophisaurus present conical teeth, with broadened bases, apices more distinctly curved lingually and posteriorly, and cutting edges that are distinctly developed. The lingual surfaces of the tooth apices are striated in Ophisaurus and Pseudopus. The lower jaw of Ophisaurus is in many respects similar to that in Anguis, however, the ...
Evidence suggests that energy-protein malnutrition is associated with impaired growth and development of facial bones. The objective of this study was to investigate the association between nutritional status and reduced space for dental eruption (crowding) in permanent dentition. A cross-sectional study with probabilistic sampling design was used. We evaluated 2,060 students aged 12 to 15 years enrolled in schools in the northeast of Brazil. Crowding was defined according to World Health Organization (WHO) as misalignment of teeth due to lack of space for them to erupt in the correct position. Nutritional status was evaluated by means of body mass index and height-for-age, using the WHOs reference curves. Parents and adolescents responded to a questionnaire about demographic, socioeconomic, biological and behavioral characteristics. The associations were estimated by odds ratio (OR) in multivariate logistic regression analysis (alpha = 0.05). Confounding and effect-modification were taken into account
Eruption is a complicated process where teeth begin to appear through the gums.Humans have 2 sets of teeth, namely primary dentition and permanent dentition.Primary dentition consists of 20 baby teeth and erupts when infants are around 6 months of age. Permanent dentition consists of 32 teeth which starts erupting at the age of 6 years old ...
The Soom Shale is perhaps most famous for conodonts. The remains of this taxon exemplify the quality of preservation, the unusual composition of the fossils and that Soom taxa are often anatomically peculiar members of their kind. Conodonts are mostly represented in the fossil record by millimetre-sized phosphatic elements recovered after acid preparation of rocks from Cambrian to Late Triassic age; they are the teeth of otherwise nonbiomineralized jawless fish (Aldridge et al. 1986). Rarely, these phosphatic elements occur as natural assemblages reflecting the morphology and topology of the conodont tooth-set, albeit collapsed into two dimensions on the bedding plane. The Soom Shale preserves hundreds of bedding plane assemblages of conodonts, which can be seen on the shale surface with the naked eye. All are from the priniodontid order; those of the taxon Promissum pulchrum form a significant proportion of the fossils collected from the Lagerstätte (Aldridge et al. 2013). They are both the ...
Learn how getting Dental Implants can help with failing dentition. By replacing a bad tooth with a dental implant, you can improve the look of your smile!
During any anesthetic, especially during General Anesthesia, it may be necessary to place life sustaining, and life saving airway devices. Be aware that no dental restoration, cap, crown, bridge, implant, partial, denture or any other unnatural dental work present, is as sound or strong as natural dentition. It is thus possible that during placement of the aforementioned devices, and perhaps even more commonly, during involuntary emergence biting down, that the dental work can be damaged. Despite the anesthesiologist taking utmost care to protect your dentition, situations may arise, out of his / her control, that could lead to dental damage. Similarly, unsound natural dentition are prone to the same risks. We encourage our patients to disclose all dental work and dental conditions, so that optimal protection can be put in place. ...
Partial mandibulectomy is a procedure that involves the partial removal of the lower jaw. This procedure is most often used to treat oral cancers affecting the mandible. - Wag!
Mandible is the scientific term for the lower jaw. Whereas we humans have a lower jaw made of only a single bone (the dentary), penguins have a more complicated mandible made up of half a dozen different elements (the dentary, splenial, articular, prearticular, angular and surangular). These bones are all connected in penguins, though some…
The Blitzkrieger G litter combines Gero v.d.Mooreiche and the most successful Weyermuhle combinations (The Weyermuhle G, I & K combinations - which produced Gero, Ilo and Kleo v.d. Weyermuhle)! The Sire: Dax is an very confident, substantial male with excellent nerve fiber and hardness. He is OFA good (prelim), full dentition and vWD clear. Dax has sired excellent working progeny both here (Blitzkrieger N litter & J Litter) and in Austalia. Dax sire, Gero v.d. Weyermuhle passed the koerung with highest rating for working drives & hardness. Gero passed SchH3 and FH (tracking) trials. Dax dam, Allee v. Blitzkrieger is a very hard bitch with high drives and extreme confidence. Allee passed SchH trial and civil protection work and proved her ability to be a very good therapy dog.. The Dam: Bo is a substantial bitch with excellent conformation, OFA good, full dentition and vWD affected.. She has balanced drives and excellent nerve fiber. Her sire, Ilo v.d. Weyermunle passed the koerung ...
The BSSPD is the UKs foremost Prosthodontics Society covering all aspects of prosthodontics - fixed, removable, implant and maxillofacial
The conodont-based biochronology of the Devonian Period is calibrated herein on the basis of: (1) a recent, reliable radiometric dating (CLAQUE??-LONG et al. 1992) of a stratigraphic position just above the Devonian-Carboniferous boundary; and (2) new calculations of stage durations based on our estimates and those of a large number of other Devonian workers, which pertain to many stratigraphie sequences in several different paleotectonic settings globally. Using these tools we maintain the 46-m.y. duration for the Devonian Period given by the recent global timescale (GTS 89) of HARLAND et al. (1990). The main changes to GTS 89 are accomplished by raising the dating of the end of the Devonian by 9 m.y. from 363 Ma to 354 Ma and considerably shortening the bizarre estimate given by GTS 89 for the length of the oldest two Early Devonian stages. We reiterate our earlier expose?? (ZIEGLER & SANDBERG 1994) of the inaccuracies...
I am indebted to my friend Mr. A. N. Leeds, of Eyebury, near Peterborough, for the opportunity of bringing under the notice of the Society a very interesting, although unfortunately imperfect, Dinosaurian jaw, recently obtained from the brick-pits in the Oxford Clay near the town named.. The specimen comprises the anterior and posterior extremities of the left ramus of the mandible, showing the alveoli of the teeth and the cavity for the articulation of the quadrate. The fractured surfaces are fresh, and it is thus evident that the present imperfect condition of the specimen is due to a blow from the pick of the workman by whom it was disinterred. When entire, its total length was probably about 1 foot. The anterior fragment (Pl. XI. figs. 1, 1 a)comprises the greater portion of the dentary bone, with the symphysis entire; while the hinder moiety (ibid. figs. 2, 2 a) includes the articular, and portions of the angular and surangular elements.. The dentary bone is somewhat roughened and pitted on ...
A large fossil crocodile-like sea monster with a bullet-shaped snout has been reported in Science.1 See MSNBC News for a summary. For an artistic rendering of what Dakosaurus andiniensis might have looked like, see National Geographic News, which states that the discovery will be the December cover story of their magazine. Dubbed Godzilla by its ...
When tooth loss people tend to choose a method of restoring dentition, excluding the involvement of the adjacent teeth. Whereas before, to restore one
The Ruddle Post Remover System was designed by Dr. Clifford Ruddle to get out of sticky situations without root or tooth damage. This system features 5 trephine sizes with matching taps that literally put the grip on the post. Once the threads have been created, the removal tool completes the job. The Ruddle System is designed to fully engage and remove even the most intransigent post while preserving surrounding dentition ...
The Ruddle Post Remover System was designed by Dr. Clifford Ruddle to get out of sticky situations without root or tooth damage. This system features 5 trephine sizes with matching taps that literally put the grip on the post. Once the threads have been created, the removal tool completes the job. The Ruddle System is designed to fully engage and remove even the most intransigent post while preserving surrounding dentition ...
Video created by University of Pennsylvania for the course Introduction to Dental Medicine. Diseases affecting the dentition and its surrounding structures have a profound influence on the patient and his/her health. Untreated conditions can ...
Dentition[edit]. Beaked whales are unique among toothed whales in that most species only have one pair of teeth. The teeth are ... The adult males often possess a large bulging forehead.[4] However, aside from dentition and size, very few morphological ...
Lower dentition[edit]. The i3 of Dermotherium chimaera is an elongate tooth bearing six tines (narrow, high "fingers" as in a ... Upper dentition[edit]. The upper molars of Dermotherium chimaera are triangular in overall shape and much broader than long, ... but again differ in details of the dentition.[14] In two specimens of D. chimaera, the length and width of the m2 are 5 and 4.3 ... the Philippine colugo and larger than the Sunda colugo and differed from both in a number of characteristics of the dentition.[ ...
Dentition. A fox's dentition, like all other canids, is I 3/3, C 1/1, PM 4/4, M 3/2 = 42. (Bat-eared foxes have six extra ...
Dentition[edit]. One main characteristic of elasmobranch fishes is their ability to continually replace the teeth in their ... These teeth are used to crush and grind food, rather than bite it.[8] Their unique dentition is important for their crustacean- ...
23-29 (upper dentition) *^ a b c Uhen 2004, pp. 29-34 (lower dentition) ...
... dentition. Ferrets have four types of teeth (the number includes maxillary (upper) and mandibular (lower) teeth) with a ...
Deciduous dentition[edit]. The overall length of the deciduous maxillary central incisor is 16 mm on average, with the crown ... Permanent dentition[edit]. The permanent maxillary central incisor is the widest tooth mesiodistally in comparison to any other ...
Dentition[edit]. There were more than sixty spoon shaped teeth in the jaws of Yunnanosaurus, and were unique among early ... This individual possesses characteristic dentition that suggests a potentially unique feeding mechanism as evidenced a tooth- ... This critical difference implies that the similarity in dentition between Yunnanosaurus and sauropods might be an example of ...
Dentition[edit]. Skull of the black-eared flying fox. The number of teeth a megabat has is dependent on the species; teeth ...
Dentition relates to the arrangement of teeth in the mouth, with the dental notation for the upper-jaw teeth using the upper- ... Species of this genus are distinguished by their moderate to large size, their massive, well-developed skulls and dentition, ...
Skull and dentition[edit]. Type specimen on display at the Natural History Museum ...
Their palatal and jaw structures of tetramorphs were similar to those of early tetrapods, and their dentition was similar too, ...
Skull and dentition. A preserved megabat showing how the skeleton fits inside its skin ...
DentitionEdit. The fangs, which are enlarged and hollow, are the first two teeth on each maxillary bone. Usually only one fang ...
Snake dentitionEdit. In most snakes, teeth are located on the dentary of the lower jaw, the maxilla, the palatine bone and the ... The opisthoglyphous dentition appears at least two times in the history of snakes.[1] While the venom of most opisthoglyphous ... Common names for the various types of snake dentition originate largely from older literature, but still are encountered in ...
DentitionEdit. Skull from Poland with one broken and one downward spiralled tusk ...
Dentition. Human inter-sex dental dimorphism centers on the canine teeth, but it is not nearly as pronounced as in the other ... dentition, long bones, and pelvis exist. In general, female skeletal elements tend to be smaller and less robust than ... dentition, long bones, and pelvis are exhibited across human populations. In general, female skeletal elements tend to be ...
Differences between Mellivorinae and Guloninae include differences in their dentition formulae. Though not in the same ...
1). Dentition. *L149) Volume III. On Wounds in the Head. In the Surgery. On Fractures. On Joints. Mochlicon ...
Talpids are small, dark-furred animals with cylindrical bodies and hairless, tubular snouts. They range in size from the tiny shrew moles of North America, as small as 10 cm in length and weighing under 12 grams, to the Russian desman, with a body length of 18-22 cm, and a weight of about 550 grams. The fur varies between species, but is always dense and short; desmans have waterproof undercoats and oily guard hairs, while the subterranean moles have short, velvety fur lacking any guard hairs. The forelimbs of moles are highly adapted for digging, with powerful claws, and the paws turned permanently outwards to aid in shovelling dirt away from the front of the body. By contrast, desmans have webbed paws with a fringe of stiff fur to aid in swimming. Moles generally have short tails, but those of desmans are elongated and flattened.[3] All species have small eyes and poor eyesight, but only a few are truly blind.[3] The external ears are very small or absent.[4] Talpids rely primarily on their ...
Restoration of dentition (if conventional imaging is inadequate) *Assessment of infra-bony defects and furcation lesions ...
On Dentition (LCL 2). *On the Excision of the Foetus (LCL 9) ...
Primary dentition stage (2-3 years old, when children's motor function is developing and start learning how to walk/ run) ... The permanent dentition can suffer from tooth malformation, impacted teeth and eruption disturbances due to trauma to primary ... Flores, Marie Therese (2002). "Traumatic injuries in the primary dentition". Dental Traumatology. 18 (6): 287-298. doi:10.1034/ ... Cho WC, Nam OH, Kim MS, Lee HS, Choi SC (May 2018). "A retrospective study of traumatic dental injuries in primary dentition: ...
". "Good dentition" may be noted.. Resp or "Chest". "Nontender, CTA bilat" Chest expansion test, normal breathing with little ...
SCHEFFER, VICTOR B. (2009-08-20). "DENTITION OF THE RIBBON SEAL". Proceedings of the Zoological Society of London. 135 (4): 579 ... widely spaced dentition and smaller canines than other species of phocid.[6] ...
a b Johnson, Clarke (1998). "Biology of the Human Dentition Archived 2015-10-30 at the Wayback Machine". uic.edu. ... Silvestro, JR (1977). "Second Dentition and School Readiness". New York State Dental Journal. 43 (3): 155-8. PMID 264640. ... ... Both sets of dentition may be affected however they are commonly seen in the affected side. Most frequently, missing teeth, ... "Severe Plane-Form Enamel Hypoplasia in a Dentition from Roman Britain". ResearchGate. Retrieved 2019-01-09.. ...
The dental formula for permanent dentition is 1.1.3.33.1.2.3, and 1.1.33.1.2 for milk dentition.[35] In the juvenile, the lower ... Rabagliati, D.S. (1924). The Dentition of the Camel. Cairo, Egypt: Egypt Ministry of Agriculture. pp. 1-32.. ...
Headgear exerts force to the dentition and basal bones via extra-oral traction attached directly to bands on the teeth or to a ... It is therefore now recommended that a single phase of treatment is undertaken once the patient is in the late mixed dentition ... Early treatment is defined as treatment provided in the early mixed dentition, usually between the ages of 7−9 years. This has ... Late treatment, or one-phase treatment, is a single course of comprehensive treatment undertaken in the permanent dentition ...
The long snout had carnivorous dentition.[53] The transition from land to sea dates to about 49 million years ago, with the ...
Aside from dentition, Omphalosaurus is relatively poorly known, save for a small number of ribs and presacral vertebrae ... Merriam, John C.; Bryant, Harold C. (1906). "Notes on the Dentition of Omphalosaurus". University of California publications in ... Omphalosaurus' highly specialized dentition indicates that they were durophagous animals.[5] Their teeth were optimized for ... Omphalosaurus are moderately large and plump marine reptiles[1] and are best known for their highly specialized dentition ...
Other articles where Dentition is discussed: human digestive system: The teeth: The teeth are hard, white structures found in ... after birth, and the primary dentition is complete by age 2 1/2; shedding begins about age 5 or 6 and is finished by age 13. ... In reptile: Skull and dentition. The skulls of the several subclasses and orders vary in the ways mentioned below. In addition ... are characterized by a distinctive dentition: the anterior incisors are separated from the complicated cheek teeth by a ...
Create healthcare diagrams like this example called Deciduous Dentition in minutes with SmartDraw. SmartDraw includes 1000s of ... Deciduous Dentition. Create healthcare diagrams like this example called Deciduous Dentition in minutes with SmartDraw. ... Deciduous Dentition. Inferior view of upper row of the deciduous teeth shown above the superior view of lower row.. LifeART ...
The dentition of animals with two successions of teeth (deciduous, permanent) is referred to as diphyodont, while the dentition ... The dentition of animals in which the teeth are set in sockets in the jawbones is termed thecodont. The evolutionary origin of ... An animals dentition for either deciduous or permanent teeth can thus be expressed as a dental formula, written in the form of ... A dinosaurs dentition included all the teeth in its jawbones, which consist of the dentary, maxillary, and in some cases the ...
Example systems of dentition analysis are listed below. Maxillary dentition (upper teeth) Ponts Analysis Linder Harth Index ... Dentition analyses are systems of tooth and jaw measurement used in orthodontics to understand arch space and predict any ... Littles Irregularity Index Bolton analysis Ngan, P. "Management of space problems in the primary and mixed dentitions". ... Bolton Analysis Moyers Mixed Dentition Analysis Tanaka and Johnston Analysis Radiographic Analysis Ballard and Willie Analysis ...
The dentition of animals with two successions of teeth (deciduous, permanent) is referred to as diphyodont, while the dentition ... Dentition use in archaeologyEdit. Dentition, or the study of teeth, is an important area of study for archaeologists, ... Dentition discussions in other articlesEdit. Some articles have helpful discussions on dentition, which will be listed as ... "Using Dentition to Age Cattle". fsis.usda.gov. Archived from the original on 2008-09-16. Retrieved 2008-09-06.. ...
anatomy dentist dental dentistry dentition medicine mouth teeth tooth molar incisor canine cuspid bicuspid enamel realistic ... Scanned human dentition used as reference. - DISPLACEMENT map to highlight details. - SSS (Sub Surface Scattering) materials. ...
Permanent Dentition with Braces 3D Model available on Turbo Squid, the worlds leading provider of digital 3D models for ... orthodontic ortho dentist dental dentistry anatomy braces brackets mouth teeth tooth dentition gums tongue throat mannequin ... Scanned human dentition used as reference. - RIGGED with simple controls. - MORPH controlled jaw and tongue movement. - MORPH ...
... to identify patterns and processes in acquisition of oral bacteria and to characterize the microbiota of different dentition ... The mixed dentition core comprised of the largest number of s-OTUs (73), of which 55 were shared with the primary dentition. ... The primary dentition also included 85% of predentate core s-OTUs. Subsequent dentitions exhibited over 90% similarity to the ... The mixed dentition contained significantly more gram-negative facultatives compared to all other dentition states, whereas the ...
OHDDESTS - Dentition Status Code. Variable Name: OHDDESTS. SAS Label: Dentition Status Code. English Text: Dentition Status ... Oral Health - Dentition (OHXDEN_F) Data File: OHXDEN_F.xpt First Published: April 2012. Last Revised: NA ... Dentition Exam (ohxden_f): Tooth count and basic screening exam. *Periodontal Exam (ohxper_f): Periodontal pockets, recession, ...
Occlusion in the primary dentition: study of children at 2 and one-half to 3 years of age. Br Dent J. 1969 Jan 21;126(2):76-9 ... Posterior crossbite is believed to be transferred from the deciduous to the permanent dentition and can have long-term effects ... The prevalence of malocclusion in the primary dentition was high. Increased overjet and anterior open bite were the most common ... Stahl F, Grabowski R. Malocclusion and caries prevalence: is there a connection in the primary and mixed dentitions?. Clin Oral ...
Learn about the primary dentition process so you can enjoy those special moments when babys first teeth arrive. Learn more ... Another primary dentition disorder is an eruption cyst, which is a sac containing fluid that forms on top of an erupting tooth ... Understanding Primary Dentition. This is the first stage of tooth development in children. The term refers to the arrival of 20 ... Primary Dentition Disorders. Patients of any age can experience dental disorders, and the problems commonly associated with ...
Buy Bonded Porcelain Restorations in the Anterior Dentition by Magne Pascal, Urs Belser from Waterstones today! Click and ... Bonded Porcelain Restorations in the Anterior Dentition: A Biomimetic Approach (Hardback). Magne Pascal (author), Urs Belser ( ... This work introduces an approach to aesthetic restoration of the anterior dentition. Guided by the philosophy of biomimetics, ...
Supernumerary teeth occur more frequently in the permanent dentition but rarely in primary dentition. Mesiodens is the most ... Supernumerary teeth are more frequently observed in permanent dentition than in deciduous dentition with predilection for the ... in permanent dentition [2] and 0.3-0.6% in the primary dentition [3] with predilection of 2 : 1 for male sex. ... Mesiodens in Primary Dentition. 2.1.1. Case 1. A 6-year-old male child had reported with the chief complaint of dental decay. ...
Merck & Co., Inc., Kenilworth, NJ, USA is a global healthcare leader working to help the world be well. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world. The Merck Veterinary Manual was first published in 1955 as a service to the community. The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Manual outside of North America.. ...
Les mini anneaux de dentition MAM soulagent bébé là où il en a besoin, pour les dents de devant ou les dents du fond. Découvrez ...
Dentition (Science: dentistry) The teeth in the dental arch, ordinarily used to designate the natural teeth in position in ... Retrieved from "https://www.biology-online.org/dictionary/index.php?title=Dentition&oldid=35601" ...
... showing evidence of an association between the use of dental floss and proximal caries reduction on primary dentition. However ... Dental Flossing and Proximal Caries in the Primary Dentition: A Systematic Review Oral Health Prev Dent. 2017;15(5):427-434. ... showing evidence of an association between the use of dental floss and proximal caries reduction on primary dentition. However ...
Mixed dentition. In a longitudinal study, Moorrees and Reed [6] found that arch length decreases 2 to 3 mm between the ages of ... Autotransplantation of Tooth in Children with Mixed Dentition Abu-Hussein Muhamad1* and Abdulgani Azzaldeen2 1Department of ... The mixed dentition is the developmental period after the permanent first molars and incisors have erupted, and before the ... Mixed dentition treatment goals often focus on skeletal rather than dental correction. To design a treatment plan, the ...
Dentition and tooth replacement of Dicraeosaurus hansemanni (Dinosauria, Sauropoda, Diplodocoidea) from the Tendaguru Formation ...
7. The Adult Dentition. 8. General Aspects of the Development of the Dentition. 9. Growth and Development of the Facial Complex ... Development of the Human Dentition Author(s)/Editor(s): van der Linden, Frans P.G.M.. Price: $ 99.00. Stock #: B7253. ... For almost three decades, Prof van der Linden s classic text, Development of the Dentition, has been the international standard ... Emphasis is placed on the relationships among the development of the dentition, the growth of the face, and functional factors ...
The altered digital dentition model then is used to construct a positive mold for the orthodontic appliance. Processing ... that defines the shape of an orthodontic appliance and then altering the digital dentition model to remove a portion that does ... A positive mold for use in creating an orthodontic appliance is produced by obtaining a digital dentition model, such as a 3D ... circuitry, such as a programmed computer, is used to obtain and alter the digital dentition model. A rapid prototyping device, ...
... Anuna Laila Mathew,1 Amar A ... and Dentition Status: A Cross-Sectional Study," International Journal of Dentistry, vol. 2011, Article ID 413639, 7 pages, 2011 ...
In humans there are two dentitions, the primary and secondary. In humans, the primary dentition starts to erupt around six ... The deciduous teeth will eventually be replaced by a set of permanent teeth called secondary dentition. ... Retrieved from "https://www.biology-online.org/dictionary/index.php?title=Primary_dentition&oldid=96336" ...
What is prognosis of dentition? Meaning of prognosis of dentition medical term. What does prognosis of dentition mean? ... Looking for online definition of prognosis of dentition in the Medical Dictionary? prognosis of dentition explanation free. ... mixed dentition, natural dentition, precocious dentition, predeciduous dentition, retarded dentition, secondary dentition. ... dentition. (redirected from prognosis of dentition). Also found in: Dictionary, Thesaurus, Encyclopedia. dentition. [den-tish´ ...
... Monday, 29 March 2021 6:01 AM [ ...
... and the consequences are too often seen as irreversible damage to the dentition. At various stages of life, different parts o ... At various stages of life, different parts of the dentition are affected, and the effects continue to be seen in the dentition ... Dentition and Lesion History. Eggertsson H. · Ferreira-Zandona A. Author affiliations Indiana University School of Dentistry, ... In the primary dentition, income and education have been found to be inversely associated with: (1) any early childhood caries ...
Dental fillings for the treatment of caries in the primary dentition. This review has been withdrawn. ... Yengopal V, Harnekar S, Patel N, Siegfried N. Dental fillings for the treatment of caries in the primary dentition. Cochrane ...
... July 27, 2008. By Dr. Chetan ... These are the first set of dentition or teeth that any mammal gets during their lifetime.. They start developing when the child ... There are no pre-molars seen in temporary teeth and so, there are a total of 20 teeth seen in deciduous dentition. ... Filed Under: Dental Articles Tagged With: deciduous dentition, deciduous teeth, milk teeth, primary teeth ...
JOSHUA B. SMITH "HETERODONTY IN TYRANNOSAURUS REX: IMPLICATIONS FOR THE TAXONOMIC AND SYSTEMATIC UTILITY OF THEROPOD DENTITIONS ... JOSHUA B. SMITH "HETERODONTY IN TYRANNOSAURUS REX: IMPLICATIONS FOR THE TAXONOMIC AND SYSTEMATIC UTILITY OF THEROPOD DENTITIONS ... Tyrannosaurus rex possesses a heterodont dentition composed of three classes (premaxillary, maxillary, and dentary) and several ... HETERODONTY IN TYRANNOSAURUS REX: IMPLICATIONS FOR THE TAXONOMIC AND SYSTEMATIC UTILITY OF THEROPOD DENTITIONS. ...
  • Dentition pertains to the development of teeth and their arrangement in the mouth. (wikipedia.org)
  • Animals whose teeth are all of the same type, such as most non-mammalian vertebrates, are said to have homodont dentition, whereas those whose teeth differ morphologically are said to have heterodont dentition. (wikipedia.org)
  • The dentition of animals with two successions of teeth (deciduous, permanent) is referred to as diphyodont, while the dentition of animals with only one set of teeth throughout life is monophyodont. (wikipedia.org)
  • The dentition of animals in which the teeth are continuously discarded and replaced throughout life is termed polyphyodont. (wikipedia.org)
  • The dentition of animals in which the teeth are set in sockets in the jawbones is termed thecodont. (wikipedia.org)
  • Current theories suggest either an "outside-in" or "inside-out" evolutionary origin to teeth, with the dentition arising from odontodes on the skin surface moving into the mouth, or vice versa. (wikipedia.org)
  • Since the origin of teeth some 450mya, the vertebrate dentition has diversified within the reptiles, amphibians, and fish: however most of these groups continue to possess a long row of pointed or sharp-sided, undifferentiated teeth (homodont) that are completely replaceable. (wikipedia.org)
  • Dentition analyses are systems of tooth and jaw measurement used in orthodontics to understand arch space and predict any malocclusion (mal-alignment of the teeth and the bite). (wikipedia.org)
  • This approximately 6-year phase when an individual has a mixture of teeth from both the primary and permanent dentitions is termed the mixed dentition, following which an adult permanent dentition is established. (springer.com)
  • Supernumerary teeth are considered as one of the most significant dental anomalies during the primary and early mixed dentition stages. (hindawi.com)
  • Supernumerary teeth occur more frequently in the permanent dentition but rarely in primary dentition. (hindawi.com)
  • Early recognition and diagnosis of supernumerary teeth is important to prevent further complications in permanent dentition. (hindawi.com)
  • Four cases of supernumerary teeth with mesiodens in upper and lower arch in primary dentition and their management have been discussed. (hindawi.com)
  • Supernumerary teeth are more frequently observed in permanent dentition than in deciduous dentition with predilection for the upper arch than lower arch in a proportion of 10 : 1 [ 2 ]. (hindawi.com)
  • The prevalence of supernumerary teeth is 0.15-1% in permanent dentition [ 2 ] and 0.3-0.6% in the primary dentition [ 3 ] with predilection of 2 : 1 for male sex. (hindawi.com)
  • In humans, the primary dentition starts to erupt around six months of age and all (i.e. twenty) teeth erupt by the age of three years. (biology-online.org)
  • The deciduous teeth will eventually be replaced by a set of permanent teeth called secondary dentition . (biology-online.org)
  • mixed dentition the complement of teeth in the jaws after eruption of some of the permanent teeth, but before all the deciduous teeth are shed. (thefreedictionary.com)
  • precocious dentition abnormally accelerated appearance of the deciduous or permanent teeth. (thefreedictionary.com)
  • What is deciduous dentition or Deciduous teeth? (drchetan.com)
  • These are the first set of dentition or teeth that any mammal gets during their lifetime. (drchetan.com)
  • There are no pre-molars seen in temporary teeth and so, there are a total of 20 teeth seen in deciduous dentition. (drchetan.com)
  • The function of primary dentition is to provide mastication, as well as to maintain the occlusion, and to maintain space for permanent teeth eruption. (ukessays.com)
  • In recent decades even after the advanced dental care that increased with intact dentition, early loss of primary teeth still remain a major concern ( Bach and Manton, 2014 ). (ukessays.com)
  • Early loss of teeth in the primary dentition has different impacts depending on which teeth are lost, child's age, existing alignment and occlusion ( Rock and British Society of Paediatric, 2002 ). (ukessays.com)
  • Outcomes important to the management of missing teeth in the partially absent dentition should be systematically summarized. (altmetric.com)
  • Mammalian Dentition: My, What Big Teeth You Have! (coursera.org)
  • Rabbits have hypsodont dentition, i.e., their teeth have a long anatomic crown with only a small portion of the crown clinically visible in the oral cavity (clinical crown) and a larger portion of the crown residing within the alveolar bone (reserve crown) ( 10 ). (frontiersin.org)
  • A 64-year-old woman with severely worn dentition, eating problems related to missing teeth and generalized tooth hypersensitivity was referred for treatment. (scielo.br)
  • Mixed dentition analysis showed there was enough space for eruption of all permanent teeth. (omicsonline.org)
  • Each mouth quadrant has 5 teeth-2 incisors anteriorly, 1 canine distal to the 2 incisors and 2 molars distal to the canine-to make a total dentition of 20 teeth. (oup.com)
  • Primary teeth are normally replaced by teeth of the succeeding permanent dentition but, where a permanent tooth fails to erupt, the primary tooth may be retained into adult life. (oup.com)
  • Developing dentition and oral vestibule in humans and their comparison with developing teeth in fish. (nih.gov)
  • The milk dentition of the Hyracodontinae is unique in several respects from the teeth of other families and subfamilies of the Order Perrisodactyla, and as a result of this, there has been some misinterpretation in the identification of premolars in the deciduous series of the Oligocene Hyracodon . (unl.edu)
  • Supernumerary teeth were found in 17.7% of the subjects with cleft lip and/or palate for primary maxillary dentition and in 5.7% for permanent maxillary dentition. (unboundmedicine.com)
  • 3. Examination of the dentition and palate of Endothiodon shows that there is only a single row of eight to 11 teeth in the upper jaw. (amnh.org)
  • A virtual model of a dental patient's dentition is provided by obtaining a digital data file of the patient's teeth and orthodontic appliances connected to the teeth, and then combining data from the data file with other data that represents surfaces of the teeth underlying the appliances. (google.com)
  • The mammals have heterodont dentition, or teeth of different basic types, including incisors for nipping or cutting, canines for piercing, and premolars and molars for shearing and grinding. (thefreedictionary.com)
  • In the following case series, we report on six cases of erosive worn dentitions (75 posterior teeth), which have been reconstructed using a template-based technique with direct composite resin restorations and already examined after 3 years in service. (uzh.ch)
  • Dentitions of Edmontosaurus regalis (CMN 2289).Exposed teeth in the middle of the left maxilla in labial (A) and occlusal (B) views. (nih.gov)
  • The crown sizes of the permanent teeth in the mixed dentition of the Norwegian children who had lived between the 14th and the 19th centuries were smaller than those of contemporary children living in the same country. (diva-portal.org)
  • For example, many patient who have missing or damaged teeth or dentures that do not fit will have impaired dentition. (registerednursern.com)
  • Chondrichthyes Teeth and Dentitions including extant and fossil taxa. (data.gov.uk)
  • Computed tomography (CT) scans of extant and fossil chondrichthyans, of teeth organized into functional dentitions. (data.gov.uk)
  • Download Resource locator , Format: N/A, Dataset: Chondrichthyes Teeth and Dentitions including extant and fossil taxa. (data.gov.uk)
  • The dentition of the Agamidae is usually described as acrodont, but most species have several pleurodont teeth at the front of the upper and lower jaws. (britannica.com)
  • Dentition is the development of teeth within the mouth. (msstate.edu)
  • DEFINITIONThe period during which both primary & permanent teeth are in the mouth together is known as the mixed dentition period. (dokumen.tips)
  • This means that the mandibular posterior teeth, as in the neutral permanent dentition, are more anteriorly situated than the maxillary teeth. (dentagama.com)
  • This growth provides pace for developing primary dentition and results, in most chilldren, in a small surplus of space (i.e. small spaces between the primary teeth). (dentagama.com)
  • After the eruption of all primary teeth, and before the mixed dentition , no great changes of the dentition are seen clinically, except for the progressive wear of the teeth. (dentagama.com)
  • Mixed dentition means when you're in between having baby teeth and then having permanent teeth. (visitworldofsmiles.com)
  • This work introduces an approach to aesthetic restoration of the anterior dentition. (waterstones.com)
  • The distances between the facial and palatal papillae in the maxillary anterior dentition. (biomedsearch.com)
  • The Laminar Techniques in the Anterior Dentition: Histo-Anatomic Restorati. (eventbrite.com)
  • The Laminar Techniques in the Anterior Dentition: Histo-Anatomic Restorations & Rubber Dam Isolation at Beverly Hills Dental Laboratory Inc. (eventbrite.com)
  • In the present case report patient was in end of early mixed dentition period and ectopically erupted lateral incisor brought back into its correct anatomical position by modified lingual arch appliance. (omicsonline.org)
  • We describe a case of complex trauma to the early mixed dentition in which tooth avulsion, intrusion, extrusion and lateral luxation were managed effectively using a fixed, non-rigid orthodontic splint after treatment with a traditional wire-composite splint had failed. (jcda.ca)
  • Clinical examination revealed that the patient was in the early mixed dentition stage. (jcda.ca)
  • Tyrannosaurus rex possesses a heterodont dentition composed of three classes (premaxillary, maxillary, and dentary) and several sets. (bioone.org)
  • 5 - 8 Few epidemiological surveys have addressed the primary dentition and even fewer studies have associated malocclusion with socioeconomic indicators. (scielo.br)
  • Introducing Mixed Dentition - the official podcast for World Of Smiles Pediatric Dentistry! (visitworldofsmiles.com)
  • The objective of this study was to describe and compare the normal anatomic features of the dentition and surrounding maxillofacial structures in healthy rabbits on CBCT and conventional CT. (frontiersin.org)
  • This study suggests that the diverse variation in the dentition asymmetry of pareid snakes is the result of their dietary specialization and divergence. (nii.ac.jp)
  • Here, we use phenotypic variation in the dentition to test a hypothesis about genetic modularity. (datadryad.org)
  • Early diagnosis of incomplete transposition during mixed dentition period intercepts the problem and prevents the developing complete transposition. (omicsonline.org)
  • Another primary dentition disorder is an eruption cyst, which is a sac containing fluid that forms on top of an erupting tooth, says the Virtual Medical Centre . (colgate.com)
  • 1 Trauma to the mixed dentition can be complicated because of the varying stages of tooth eruption and root development. (jcda.ca)
  • The primary dentition is usually complete around two and a half years of age with the eruption of the maxillary second molars. (dentagama.com)
  • The purpose of the study is to determine the prevalence of dental caries in preterm birth children aged 2-5 years in primary dentition. (clinicaltrials.gov)
  • The prevalence of hypodontia was 16.2% for primary dentition and 52.7% for permanent dentition in the subjects with cleft lip and/or palate. (unboundmedicine.com)
  • Given the increasing prevalence of dental erosion and its consequences, this unique hands-on course is for general practitioners and prosthodontists who are interested in achieving proficiency in state-of-the-art ultraconservative indirect techniques for the eroded dentition. (ideausa.net)
  • From a public health perspective, the assessment of malocclusion in the deciduous dentition should focus on magnitude and severity as a guide to establishing strategies aimed at preventing occlusal problems later in life. (scielo.br)
  • 1 , 2 Increased overjet, deep overbite, lateral crossbite and anterior open bite are the most common types of malocclusion in the primary dentition. (scielo.br)
  • Specific features of their dentition make rabbits susceptible to tooth overgrowth and malocclusion. (frontiersin.org)
  • The tooth wear evaluation system: a modular clinical guideline for the diagnosis and management planning of worn dentitions. (nih.gov)
  • Consequently this generation is more likely to retain its natural dentition than previous generations (7, 8, 9). (thefreedictionary.com)
  • This article describes a new method for controlling the maxillary dentition with 2 midpalatal miniscrews. (qxmd.com)
  • Three-dimensional dental model analysis of treatment outcomes for protrusive maxillary dentition: comparison of headgear, miniscrew, and miniplate skeletal anchorage. (qxmd.com)
  • Because the only exceptional species with symmetric dentition has been regarded as a slug-eater, the extent of dietary specialization on slugs could shape the degree of the lateral asymmetry of mandibular dentition (dentition asymmetry) even among snail eaters. (nii.ac.jp)
  • Since cephalometric radiographs overestimate the width of the buccal bone due to superimposition errors, a cone-beam computed tomography (CBCT) evaluation of the anterior mandibular dentition was presented in a group of individuals with varying growth patterns (hypodivergent, normodivergent, and hyperdivergent) and incisor inclinations (retroclined, upright, and proclined). (springer.com)
  • Appropriate for all dental professionals, the course discusses the etiology of malocclusions in the developing dentition, including oral and nonnutritive habits, and discusses the management of these malocclusions. (westernschools.com)
  • Identify the etiology of malocclusions in the developing dentition, including oral and nonnutritive habits. (westernschools.com)
  • Discuss the management of malocclusions in the developing dentition. (westernschools.com)
  • There are many ways of restoring the worn dentition and many ways of gaining space, but most patients would like to maintain as much of their own tooth substance as possible and also to schedule treatment over time. (dentistry.co.uk)
  • In my practice, I see many patients that have worn dentition and it's almost like it has become epidemic. (cosmedent.com)
  • TY - JOUR T1 - A Longitudinal Study of the Presence of Dental Anomalies in the Primary and Permanent Dentitions of Cleft Lip and/or Palate Patients. (unboundmedicine.com)
  • Objective : To evaluate the periodontitis, dentition defect and edentulous jaw status of old patients with Diabetes Mellitus in Weihui. (cnki.com.cn)
  • Methods: The patients over 60 years old with diabetes mellitus in department of stomatology, the first affiliated hospital of Xinxiang medical college in recent three years were examined for periodontitis, dentition defect and edentulous jaw status, the results were compared with the control group. (cnki.com.cn)
  • Results: 70.02% of the old patients with diabetes mellitus suffered from periodontitis, 66.36% from dentition defect, 18.26% from edentulous jaw. (cnki.com.cn)
  • This nursing care plan is for patients have imbalanced nutrition less than body requirements due to impaired dentition . (registerednursern.com)
  • Patients can have impaired dentition due to many reasons. (registerednursern.com)
  • The virtual model is useful in preparing a physical model of the patient's current dentition that can be used, for example, to make a dental retainer. (google.com)
  • Microformed lateral incisors were found in 22.7% of permanent lateral incisors but not in primary dentition. (unboundmedicine.com)
  • The incisors are more upright than in the permanent dentition, the average overjet and overbite being around 3.0mm and 2,5mm, respectively. (dentagama.com)
  • There is only one study in the current literature showing evidence of an association between the use of dental floss and proximal caries reduction on primary dentition. (nih.gov)
  • Dental caries is a process that typically keeps recurring throughout life, and the consequences are too often seen as irreversible damage to the dentition. (karger.com)
  • This chapter reviews the linkage between the caries process and the dental caries lesion history of the human dentition. (karger.com)
  • In the primary dentition, income and education have been found to be inversely associated with: (1) any early childhood caries and (2) the maxillary incisor caries pattern. (karger.com)
  • Yengopal V, Harnekar S, Patel N, Siegfried N. Dental fillings for the treatment of caries in the primary dentition. (cochrane.org)
  • adult dentition: I 3/3, C 1/1, P 4/4, M 3/3. (unl.edu)
  • Our results of modularity by tooth type suggest that adult variation in the OWM dentition is influenced by early developmental processes such as odontogenesis and jaw patterning. (datadryad.org)
  • Subsequent dentitions exhibited over 90% similarity to the primary dentition in phylogenetic and functional structure. (springer.com)
  • It causes aesthetic, functional, structural and biologic problems and is also often accompanied by a lack of space to restore the remaining dentition. (dentistry.co.uk)
  • The purpose of this study was to examine whether the status of dentition is associated with incident functional disability in elderly people. (nii.ac.jp)
  • Status of dentition was associated with incident functional disability in an elderly Japanese population. (nii.ac.jp)
  • This tooth is functional in the young animal but is lost with the deciduous dentition and is not replaced. (unl.edu)
  • The purpose of this study was to assess the presence and the degree of expression of the molar tubercle according to sex, dentition and hemi-arches. (conicyt.cl)
  • The concordance about the presence or absence of the molar tubercle according to dentition, hemi-arch and sex, was estimated by the Kappa Statistics. (conicyt.cl)
  • There was a significant and "moderate" concordance between the left and right sides in primary dentition (k=0.596), there was a "good" concordance in permanent dentition (k=0.708) and a "weak" and significant concordance between the presence of the molar tubercle and dentition (k=0.207). (conicyt.cl)
  • Early Mesial shiftIf the primary dentition is spaced dentition with flush terminal relationship of second primary molars, the eruptive forces of the permanent molar causes closing of any existing spaces between the primary molars (primate spaces) effectively causing a decrease in arch length. (dokumen.tips)
  • Herbivorous reptiles rarely evolve occluding dentitions that allow for the mastication (chewing) of plant matter. (sciencemag.org)
  • We analyzed covariation within the dentitions of six species of Old World monkeys (OWMs) to assess the macroevolutionary extent of this framework: first by estimating variance-covariance matrices of linear tooth size, and second by performing a geometric morphometric (GM) analysis of tooth row shape. (datadryad.org)
  • The evolutionary origin of the vertebrate dentition remains contentious. (wikipedia.org)
  • Meanwhile, each tooth was independently remodeled according to its physiological shapes, and could be matched completely with the maxilla and dentition. (ovid.com)
  • The reconstructed 3D model has some notable merits such as fidelity, clear three-dimension and high quality to show the fine structure of maxilla and dentition, which can apply to the field of teaching, scientific research and surgery simulations. (ovid.com)
  • A positive mold for use in creating an orthodontic appliance is produced by obtaining a digital dentition model, such as a 3D geometric surface model or a 3D volumetric image model, that defines the shape of an orthodontic appliance and then altering the digital dentition model to remove a portion that. (google.com)
  • The altered digital dentition model then is used to construct a positive mold for the orthodontic appliance. (google.com)
  • 2. The method of claim 1 , wherein using the altered digital dentition model to construct a positive mold for the orthodontic appliance includes delivering the altered digital dentition model to a rapid prototyping system. (google.com)
  • 8. The method of claim 5 , wherein using the altered digital dentition model to construct a positive mold for the orthodontic appliance includes delivering a data set that identifies boundaries of the single 3D surface model to a rapid prototyping system. (google.com)
  • This multiauthor clinical guide provides an evidence-based overview of orthodontic management during development of the dentition. (springer.com)
  • The mixed dentition is a time in dental development when many potentially severe malocclusions may be intercepted. (westernschools.com)
  • The mouse has a highly reduced dentition, with one incisor, separated by a diastema region to three molars, in each quadrant. (wiley.com)
  • More particularly, the present invention relates to methods of preparing virtual dentition models and methods of fabricating dental appliances such as retainers from virtual models. (google.com)
  • Previously, most of these studies have concentrated on mammals because of their extraordinarily complex dentitions with extensive occlusal topography and diverse tissue types. (sciencemag.org)
  • In conclusion, increased overjet is undoubtedly associated with TDI in the primary dentition. (dentaltraumaguide.org)
  • This is a very well designed study of the role of risk factors in TDI affecting the primary dentition, and the only predictive factor isolated was increased overjet. (dentaltraumaguide.org)
  • What is Medullary sponge kidney and anodontia of permanent dentition? (rightdiagnosis.com)
  • What are the symptoms of Medullary sponge kidney and anodontia of permanent dentition? (rightdiagnosis.com)
  • Early loss of a primary incisor has little effect upon the permanent dentition although it does detract from appearance. (ukessays.com)
  • Based on a structured search through PubMed, original research articles regarding TDI and associated factors in the primary dentition were then reviewed by two examiners. (dentaltraumaguide.org)
  • At various stages of life, different parts of the dentition are affected, and the effects continue to be seen in the dentition long after the events took place. (karger.com)
  • On the palate, dentition, and classification of the fossil reptile Endothiodon and related genera. (amnh.org)