Age Determination by Skeleton: Establishment of the age of an individual by examination of their skeletal structure.Age Determination by Teeth: A means of identifying the age of an animal or human through tooth examination.Tooth: One of a set of bone-like structures in the mouth used for biting and chewing.Tooth Loss: The failure to retain teeth as a result of disease or injury.Tooth Germ: 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)Tooth, Deciduous: The teeth of the first dentition, which are shed and replaced by the permanent teeth.Tooth Crown: 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)Tooth Root: 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)Tooth Eruption: 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)Tooth, Supernumerary: 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.Tooth Abnormalities: Congenital absence of or defects in structures of the teeth.Tooth Wear: Loss of the tooth substance by chemical or mechanical processesEncyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Cattle: Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.Incisor: 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)RNA Polymerase I: A DNA-dependent RNA polymerase present in bacterial, plant, and animal cells. The enzyme functions in the nucleolar structure and transcribes DNA into RNA. It has different requirements for cations and salts than RNA polymerase II and III and is not inhibited by alpha-amanitin. EC Diseases: Diseases of domestic cattle of the genus Bos. It includes diseases of cows, yaks, and zebus.Molar, Third: The aftermost permanent tooth on each side in the maxilla and mandible.Radiography, Panoramic: Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film.Molar: 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)Odontogenesis: 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).Cross-Sectional Studies: Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.Human Characteristics: The fundamental dispositions and traits of humans. (Merriam-Webster's Collegiate Dictionary, 10th ed)Dissent and Disputes: Differences of opinion or disagreements that may arise, for example, between health professionals and patients or their families, or against a political regime.Violence: Individual or group aggressive behavior which is socially non-acceptable, turbulent, and often destructive. It is precipitated by frustrations, hostility, prejudices, etc.Rupicapra: A genus of ruminants in the family Bovidae. The common name chamois usually refers to the species Rupicapra rupicapra. Rupicapra pyrenaica, found in the Pyrenees, is more properly referred to as the Pyrenean chamois.Farmer's Lung: A form of alveolitis or pneumonitis due to an acquired hypersensitivity to inhaled antigens associated with farm environment. Antigens in the farm dust are commonly from bacteria actinomycetes (SACCHAROPOLYSPORA and THERMOACTINOMYCES), fungi, and animal proteins in the soil, straw, crops, pelts, serum, and excreta.Spain: Parliamentary democracy located between France on the northeast and Portugual on the west and bordered by the Atlantic Ocean and the Mediterranean Sea.Folklore: The common orally transmitted traditions, myths, festivals, songs, superstitions, and stories of all peoples.Duane Retraction Syndrome: A syndrome characterized by marked limitation of abduction of the eye, variable limitation of adduction and retraction of the globe, and narrowing of the palpebral fissure on attempted adduction. The condition is caused by aberrant innervation of the lateral rectus by fibers of the OCULOMOTOR NERVE.Laboratory Animal Science: The science and technology dealing with the procurement, breeding, care, health, and selection of animals used in biomedical research and testing.JC Virus: A species of POLYOMAVIRUS, originally isolated from the brain of a patient with progressive multifocal leukoencephalopathy. The patient's initials J.C. gave the virus its name. Infection is not accompanied by any apparent illness but serious demyelinating disease can appear later, probably following reactivation of latent virus.Education, Veterinary: Use for general articles concerning veterinary medical education.BooksAnimal Husbandry: The science of breeding, feeding and care of domestic animals; includes housing and nutrition.Animal Nutrition Sciences: The study of NUTRITION PROCESSES, as well as the components of food, their actions, interaction, and balance in relation to health and disease in animals.Paleontology: The study of early forms of life through fossil remains.Geology: The science of the earth and other celestial bodies and their history as recorded in the rocks. It includes the study of geologic processes of an area such as rock formations, weathering and erosion, and sedimentation. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Forensic Sciences: Disciplines that apply sciences to law. Forensic sciences include a wide range of disciplines, such as FORENSIC TOXICOLOGY; FORENSIC ANTHROPOLOGY; FORENSIC MEDICINE; FORENSIC DENTISTRY; and others.Archaeology: The scientific study of past societies through artifacts, fossils, etc.Amino Acids: Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins.Sequence Homology, Amino Acid: The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.IllinoisChicagoSoil Pollutants, Radioactive: Pollutants, present in soil, which exhibit radioactivity.Research: Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed)Uranium: Uranium. A radioactive element of the actinide series of metals. It has an atomic symbol U, atomic number 92, and atomic weight 238.03. U-235 is used as the fissionable fuel in nuclear weapons and as fuel in nuclear power reactors.Academies and Institutes: Organizations representing specialized fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., National Academy of Sciences, Brookings Institution, etc.Ethnobotany: The study of plant lore and agricultural customs of a people. In the fields of ETHNOMEDICINE and ETHNOPHARMACOLOGY, the emphasis is on traditional medicine and the existence and medicinal uses of PLANTS and PLANT EXTRACTS and their constituents, both historically and in modern times.von Willebrand Diseases: Group of hemorrhagic disorders in which the VON WILLEBRAND FACTOR is either quantitatively or qualitatively abnormal. They are usually inherited as an autosomal dominant trait though rare kindreds are autosomal recessive. Symptoms vary depending on severity and disease type but may include prolonged bleeding time, deficiency of factor VIII, and impaired platelet adhesion.Menorrhagia: Excessive uterine bleeding during MENSTRUATION.von Willebrand Factor: A high-molecular-weight plasma protein, produced by endothelial cells and megakaryocytes, that is part of the factor VIII/von Willebrand factor complex. The von Willebrand factor has receptors for collagen, platelets, and ristocetin activity as well as the immunologically distinct antigenic determinants. It functions in adhesion of platelets to collagen and hemostatic plug formation. The prolonged bleeding time in VON WILLEBRAND DISEASES is due to the deficiency of this factor.Geriatrics: The branch of medicine concerned with the physiological and pathological aspects of the aged, including the clinical problems of senescence and senility.von Willebrand Disease, Type 2: A subtype of von Willebrand disease that results from qualitative deficiencies of VON WILLEBRAND FACTOR. The subtype is divided into several variants with each variant having a distinctive pattern of PLATELET-interaction.Cohort Studies: Studies in which subsets of a defined population are identified. These groups may or may not be exposed to factors hypothesized to influence the probability of the occurrence of a particular disease or other outcome. Cohorts are defined populations which, as a whole, are followed in an attempt to determine distinguishing subgroup characteristics.von Willebrand Disease, Type 1: A subtype of von Willebrand disease that results from a partial deficiency of VON WILLEBRAND FACTOR.

The development and structure of the chimpanzee mandible. (1/77)

The sites of growth and remodeling, and the associated changes in cortical bone structure, have been studied in the chimpanzee mandible and compared with those previously reported in the human and macaque mandibles. The location of the principal sites of growth, and the distribution of the areas of deposition and resorption in the ramus, were found to be similar in all three species. In the chimpanzee, unlike Man, the bone being deposited at the condyle, posterior border of the ramus and coronoid process was plexiform in nature, indicating very rapid growth. The pattern of remodeling in the mandibular body, on the other hand, showed marked species differences at the chin and on the submandibular lingual surface, which account for the contrasts seen in the adult morphology of these regions. Although the pattern of distribution of cortical densities differed from that of surface remodeling, the information they give is complementary in analysing bone growth. The densest regions were found to coincide with sites of consistent lamellar deposition, while the least dense regions were those where plexiform bone was formed. Areas where remodeling led to the greatest reorientation of bone tissue within the cortex showed the greatest disparity between the two patterns.  (+info)

Delayed dental age in boys with constitutionally delayed puberty. (2/77)

It was the purpose of this study to evaluate dental age in boys with delayed puberty and to compare them with a group of normal, healthy boys. The study group consisted of eight boys with constitutional delay of growth and puberty (CDGP), older than 14 years, and with a testis volume smaller than 4 ml. The control group comprised 38 normal, healthy boys, aged between 12.4 and 14.3 years. Dental age was assessed using the Demirjian method and, on the basis of this evaluation, a dental delay score (i.e. dental age minus chronological age) was calculated in the CDGP and the control group. It was found that Demirjian's dental age assessment is a valid method for scoring dental age in Belgian boys between 12 and 14 years of age, and that CDGP boys showed a significant delay in dental development compared with normal boys (P = 0.0085). This study revealed a significant retardation in dental maturation of boys with CDGP.  (+info)

A comparison of the USDA ossification-based maturity system to a system based on dentition. (3/77)

Two studies using commercially fed cattle were conducted to determine the relationship of the USDA bone ossification-based maturity system to one based on the number of permanent incisors present at slaughter. These studies showed that 91.5 to 100% of cattle with zero permanent incisors (< 23.8 mo of age), 89.1 to 97.5% of cattle with two permanent incisors (23.8 to 30.4 mo of age), 75 to 82.2% of cattle with four permanent incisors (30.4 to 38.0 mo of age), 64 to 72.5% of cattle with six permanent incisors (38.0 to 45.3 mo of age), and 40% of cattle with eight permanent incisors (> 45.3 mo of age) were graded as A maturity by the USDA maturity classification system. Kappa tests revealed no statistical relationship between the dentition- and skeletal ossification-based maturity systems. Dentition-based maturity agreed with ossification/lean maturity for only 162 of 1,264 carcasses in Exp. 1 and only 54 of 200 carcasses in Exp. 2. Cattle with two, four, six, or eight permanent incisors were classified in more youthful categories of USDA bone ossification/lean maturity than they should have been. Male cattle were more likely to be misclassified into a younger age category by the USDA system than were female cattle. It seems that determining physiological maturity by number of permanent incisors rather than by the current USDA method of subjectively evaluating skeletal and lean maturity may prove to be a more accurate technique of sorting beef carcasses into less-variable age groups.  (+info)

Daily incremental lines in sika deer (Cervus nippon) dentine. (4/77)

This work was designed to observe the dentine incremental lines of the sika deer (Cervus nippon) fawns and to investigate their periodicity using the chronological labeling method with fluorochromes. The incremental lines were observed in decalcified specimens stained by Bodian's silver technique, and the fluorescence-labeled lines were observed in undecalcified and ground specimens. In the silver stained specimens, there were two types of lines, deeply stained thick lines and faintly stained minute regular incremental lines. The intervals and staining intensities of the deeply stained thick lines were very similar to those of the fluorescence-labeled lines in the ground specimens obtained from the same tooth, and hence, it appeared that the both lines were identical. The number of minute incremental lines between the deeply stained thick lines was the same as that of days between the time when each fluorescent labeling injection was made. Therefore, it seemed that each minute incremental line was formed each day. The possibility of age estimation in days using diurnal dentine increments was discussed.  (+info)

Cleft type and Angle's classification of malocclusion in Korean cleft patients. (5/77)

This study was performed to investigate the contributing factors, such as cleft type, side of cleft, patient's age, and gender, associated with Angle's classification of malocclusion in Korean cleft patients. The records of 250 cleft patients (175 males, 75 females) who attended the Department of Orthodontics, Seoul National University Dental Hospital between 1988 and 1999 were examined. The percentages of subjects with cleft lip (CL), cleft lip and alveolus (CLA), cleft palate (CP), and cleft lip and palate (CLP) were 7.6, 19.2, 9.6, and 63.6, respectively. The overall distributions of unilateral and bilateral clefts were 76 and 24 per cent, respectively. The overall percentages of Class I, II, and III malocclusions were 18.5, 8.8, and 72.7. The frequency of Class III malocclusions was most prevalent in all age groups. Bivariate analysis showed that whilst gender was not significant, the type of cleft significantly influenced the development of a Class III malocclusion (P < 0.01). Using logistic regression analysis, subjects in the CP (P < 0.05) and CLP groups (P < 0.01) were 3.9 and 5.5 times more likely to have a Class III malocclusion than those in the CL group. There was, however, no statistical difference in the prevalence of a Class III malocclusion between the CL and the CLA groups (P > 0.05). When the degree of cleft involvement in the palate increased, so did the predominance of a Class III malocclusion.  (+info)

Forensic odontology: the roles and responsibilities of the dentist. (6/77)

Dentistry has much to offer law enforcement in the detection and solution of crime or in civil proceedings. Forensic dental fieldwork requires an interdisciplinary knowledge of dental science. Most often the role of the forensic odontologist is to establish a person's identity. Teeth, with their physiologic variations, pathoses and effects of therapy, record information that remains throughout life and beyond. The teeth may also be used as weapons and, under certain circumstances, may leave information about the identity of the biter. Forensic odontology has an important role in the recognition of abuse among persons of all ages. Dental professionals have a major role to play in keeping accurate dental records and providing all necessary information so that legal authorities may recognize malpractice, negligence, fraud or abuse, and identify unknown humans.  (+info)

An Early Pleistocene hominin mandible from Atapuerca-TD6, Spain. (7/77)

We present a mandible recovered in 2003 from the Aurora Stratum of the TD6 level of the Gran Dolina site (Sierra de Atapuerca, northern Spain). The specimen, catalogued as ATD6-96, adds to the hominin sample recovered from this site in 1994-1996, and assigned to Homo antecessor. ATD6-96 is the left half of a gracile mandible belonging to a probably female adult individual with premolars and molars in place. This mandible shows a primitive structural pattern shared with all African and Asian Homo species. However, it is small and exhibits a remarkable gracility, a trait shared only with the Early and Middle Pleistocene Chinese hominins. Furthermore, none of the mandibular features considered apomorphic in the European Middle and Early Upper Pleistocene hominin lineage are present in ATD6-96. This evidence reinforces the taxonomic identity of H. antecessor and is consistent with the hypothesis of a close relationship between this species and Homo sapiens.  (+info)

Dental age in Dutch children. (8/77)

Dental age was studied in a sample of 451 Dutch children (226 boys and 225 girls) according to the method of Demirjian. They were born between 1972 and 1993 and were between 3 and 17 years of age at the time a dental pantomogram (DPT) was obtained. All children were placed in the age group closest to their chronological age. All 451 DPTs were scored by one examiner. A subset of 52 DPTs was scored by a second examiner and the intra-class correlation coefficient (ICC) and Cohen's kappa were calculated. The ICC was 0.99 and Cohen's kappa 0.68. Boys and girls were analysed separately.A significant difference was found between chronological age and dental age. On average, the Dutch boys were 0.4 years and the girls 0.6 years ahead of the French-Canadian children analysed by Demirjian. Therefore, the French-Canadian standards were not considered suitable for Dutch children. New graphs for the Dutch population were constructed using a logistic curve with the equation Y = 100*{1/(1 + e(-alpha(x - x0)))} as a basis. The 90 per cent confidence interval was calculated. To determine whether the logistic curve was correct, a residual analysis was carried out and scatter plots of the differences were made. The explained variance was 93.9 per cent for the boys and 94.8 per cent for the girls. Both the residual analysis and the scatter plots indicated that the logistic curve was appropriate for use with Dutch children. In addition to the graphs, tables were produced which transfer the maturity scores calculated by the method of Demirjian into Dutch dental age.  (+info)

  • Cattle are placed in a cattle crush in order to restrain them prior inspecting the mouth and amount of teeth that each animal has. (
  • Cattle have thirty-two teeth, including six incisors or biting teeth and two canines in the front on the bottom jaw. (
  • The teeth of cattle are designed primarily for grinding, and they use their rough tongues to grasp grass and then nip it off between their incisors and the dental pad. (
  • There is controversy on the reliability of attempting to tell the age of cattle by their teeth, as rate of wear can be affected by the forage that is grazed. (
  • Fat cattle auctions in New South Wales, Australia identify the amount of teeth that prime animals have in the form of sprayed marks along the back. (
  • Thus two tooth cattle are marked on the wither , four tooth on the middle of the back and six tooth on their high bone (near tail). (
  • Milk and eight tooth cattle are not marked. (
  • Cattle age in a carcase is determined checking the physiological skeletal maturity (ossification) (red) of the tips or "buttons" of the thoracic vertebrae . (
  • The use of number (year) branding, tattoos or ear tags with numbers or different colours are good methods of identifying the age of cattle, if they are used according to standards. (
  • The formation and integration of new hippocampal neurons in adult mammals (adult hippocampal neurogenesis, AHN) correlates negatively with age and positively with habitat complexity. (
  • Using biological and morphological criteria we define four age categories: young, sub adult, adult and senescent adult. (
  • This is the reason that a tooth such as the first adult molar is also known as the "six-year molar," because it generally erupts in everyone around age 6, give or take. (
  • With few exceptions, afrotherians are closer to median adult jaw length with fewer erupted, permanent cheek teeth than comparable stages of non-afrotherians. (
  • By examining permanent adult teeth in this way, it has provided us with key insights into the evolution of dental development, as well as aspects of life history in our fossil ancestors. (
  • The tooth buds grow at specific zones along the dental lamina, giving rise to primary and secondary dentition. (
  • However, in cases where the entire dentition has to be restored and no information can be gained from remaining natural teeth, old photographs, or cast models, other methods have to be applied to select and design the missing teeth. (
  • Radiographs of the dentition can be used to determine the stage of dental development of the teeth from initial mineralization of a tooth, crown formation to root apex maturation. (
  • Specimens showing less than half (sengis, golden moles) or two-thirds (tenrecs, hyraxes) of their permanent cheek teeth reach or exceed the median jaw length of conspecifics with a complete dentition. (
  • Tooth decay in toddlers, children and adults, also called dental caries, is a bacterial infection causing demineralization and destruction of the hard tissues of the teeth. (
  • The aim of the present study was to evaluate the relationship between BMI and tooth decay in a population of Iranian children. (
  • Disease: A few of the many diseases which we discussed over the past few months (e.g. gingivitis, stomatitis, tartar build-up, tooth decay, etc) could lead to the demise of teeth. (
  • Catechins have been shown to kill mouth bacteria associated with tooth decay and gum disease, so the researchers suspect this is what gives green tea its dental benefits. (
  • Shen's team mapped various soil deposits in the cave and calculated the age of crystallised limestone samples by using the rate of uranium decay. (
  • We described a method for the preliminary determination of the relative age of walruses based on the ratio between the width of cement and dentin on the attrition surface of lower teeth (without cutting). (
  • Harris also found that tooth attrition (wear) could be used effectively in some populations (93% of the sample up to four years old were correctly aged this way), but was a highly variable character-it's heavily related to the diet of the animal in question, and tooth wear is slower in old age-and was thus not a reliable method of assessing absolute age. (
  • Visual method is based on the sequence of eruption of the teeth and morphological changes that are caused due to function such as attrition, changes in color that are indicators of aging. (
  • Although data on the absolute timing of eruption in sengis, golden moles and tenrecs are still unknown, craniometric comparisons for ontogenetic series of these taxa show that considerable skull growth takes place prior to the complete eruption of the permanent cheek teeth. (
  • Apical elongation appeared to develop before coronal elongation and when cheek teeth malocclusion occurred, prognosis for recovery of dental disease was poor. (
  • The relative age of a deer can be determined by the number of teeth in younger deer and the amount of dentine exposed (tooth wear) in older deer (see Figure 2). (
  • Thus two tooth cattle are marked on the wither , four tooth on the middle of the back and six tooth on their high bone (near tail). (
  • About 30 percent of // all males over age 50 suffer from the condition to some degree, with symptoms ranging from diminished appetite, fatigue, and decreased libido to irritability, decreased muscle mass and strength, and decreased bone mineral density. (
  • Tooth eruption is a physiologic process in which teeth move from their development position within the alveolar bone to break the gum toward the oral cavity. (
  • bone age osseous development shown radiographically, stated in terms of the chronological age at which the development is ordinarily attained. (
  • A majority of experts would agree that a properly prepared homemade raw diet with ground bone is the answer to natural cat teeth health. (
  • The last upper molar on the top jaw and the lower molar together make up the "carnassial teeth" (the large teeth found in many carnivorous mammals, used for shearing flesh and bone in a scissor or shear-like way 5 ). (
  • Are we using the appropriate reference samples to develop juvenile age estimation methods based on bone size? (
  • Experimental specimens will include intact bone-periodontal ligament (PDL)-tooth fibrous joints. (
  • Many have arrived without IDs, leaving Sweden the task of checking their real ages to ensure adults - defined as age 18 or over - were not pretending to be minors to secure asylum. (
  • Half of unaccompanied minors have been registered as between 16 and 17, often making age confirmation difficult and sparking accusations from the likes of the far-right Sweden Democrats - the third biggest party in parliament - that adults are taking advantage of soft controls to enter the country. (
  • Similarly, the weight of the eye lens-which grows throughout life but experiences very little wear-could separate yearlings from adults (91% with lenses weighing less than 210mg were less than a year old), but thereafter there was too much overlap between age classes to be reliable. (
  • In the absence of other information that could corroborate the teens' self-reported ages, analysis of their dental X-rays revealed that both could be adults. (
  • Previous research has indicated that regular consumption of green tea may lead to a lower instance of periodontal disease, a leading cause of tooth loss in adults," says Samuel Low of the University of Florida College of Dentistry and President of the American Academy of Periodontology . (
  • The application of this method will make sex determination of adults and, for the first time, juveniles a reliable and routine activity in future bioarcheological and medico-legal science contexts. (
  • Relying on its resemblance to securely dated human fossils in Japan, scientists assigned this Homo sapiens skull an age of 20,000 to 30,000 years. (
  • We examined specimens from false killer whales from combined strandings (South Africa, 1981) and harvest (Japan 1979-80) and found morphological evidence of changes in the activity of the ovaries in relation to age. (
  • according to Schultz very old specimens with extreme wear of the teeth and signs of bony atrophy. (
  • Specimens in some recorded cases resembled their parents at the age of 16 to 21 month. (
  • The aim of the present study was to compare the values of the Thylstrup & Fejerskov Index (TF index) for the determination of the prevalence of dental fluorosis using either all teeth (gold standard) or six upper anterior teeth (simplified TF index). (
  • Facial esthetics has important social and psychological effects on the human personality in which the appearance of anterior teeth is critical for an attractive face and pleasing smile. (
  • One of the most crucial parameters in this context is in selecting the correct shape and size of the maxillary anterior teeth. (
  • In prosthetic dentistry, sex related differences in tooth forms and arrangement of anterior teeth are assumed and optimal esthetics is also assumed to be achieved only if the face, arch, and tooth forms are in harmony. (
  • Root Canal Treatment or Endodontic therapy is a procedure done to remove the infected pulp and save the tooth. (
  • A feature suitable for age diagnosis is the secondary dentin formation of odontoblasts in the pulp cavity and the associated decrease in pulp volume. (
  • The aim of this study was to review the body of knowledge related to dental pulp stem cells, the most common growth factors, and the scaffolds used to control their differentiation, and a clinical technique for the management of immature non-vital teeth based on this novel concept. (
  • Hotels are very ex- MIAMI (UP)-Three dental educators, one of them from Indiana, said today that badly decayed teeth-even those decayed to the highly 'sensitive pulp - can be The Zhukov disgrace definitely stunned the Soviet people and particularly the men in the armed forces who had served under him. (
  • However, in the regression models developed for Chilean population, it can be stated that the adjustment indicated by the coefficients of determination, show uncertainty between the pulp / tooth area and chronological age in lower canines, therefore it is suggested to use additional estimation methods for age in this population. (
  • This cross-sectional observational study comprised a total of 120 panoramic radiographies of patients aged 5-22 year-old, males and females, attended between 2007 and 2012 at our Institution. (
  • Cardoso HFV , Caldas IM, Andrade M. Dental and skeletal maturation as simultaneous and separate predictors of chronological age in the living: Assessing the likelihood/probability of having attained 16 years of age in males. (
  • Table 1: Descriptive statistics for comparison of predominant maxillary central incisor tooth form in males and females of Saudi Arabian population. (
  • So, the present clinical study was conducted to classify various anterior tooth forms, arch forms and palatal forms with its predominant occurrence in both males and females of Saudi population. (
  • Overall prevalence of signs and symptoms occurring during primary tooth eruption in children between 0 and 36 months was 70.5% (total sample = 3506). (
  • Prevalence was significantly affected by age and by the year of study, but not by sex nor by the region of sampling. (
  • The two studies reported here aimed to determine the prevalence of dental disorders in degus and to identify and evaluate diagnostic tools for determination of prognosis of these disorders. (
  • In study A, health data from 225 degus at AAP, Rescue Center for Exotic Animals in the Netherlands, were collated and the prevalence of dental disorders and differences in sex and age at clinical onset of symptoms associated with dental disorders were described. (
  • This study aims to assess the accuracy of age estimation according to two cut-off points of Demirjian's developmental stages (G and H) in the wisdom teeth, using panoramic radiographs from Colombian and Mexican teenagers. (
  • They found that men who drank at least one cup of tea a day were 19% less likely to have fewer than 20 teeth (a full set including wisdom teeth is 32) than those who did not drink green tea. (
  • A total of 2346 radiographic images from 1167 female and 1179 male subjects aged 15-70 years were evaluated. (
  • I sent the incisor teeth out to Wildlife Analytical Labs in Texas, where the cementum annuli method was used to confirm the buck's age at 5 1/2 years. (
  • For example, their age was unknown but expected to be great," he said, based on studies from more than 50 years ago. (
  • Further analysis suggested the lifespan of Greenland sharks was at least 400 years, with sexual maturity reached around the age of 150. (
  • Teeth provide remarkable evidence about the early years of an individual's life. (
  • Over the past three years, Dr Pike has been perfecting a new micro-sampling technique which involves using a laser to take tiny samples from along the growth axis of a tooth. (
  • Using the laser allows for up to 2,000 measurements to be taken from a single tooth (earlier techniques allowed only four or five), thus creating a highly detailed picture of an individual's movements throughout the first 14 years of life. (
  • The horns form fully when the animal reaches the age of five or six years but the bosses do not become "hard" till 8 to 9 years old. (
  • Without scientific studies on growth that are specific to each population, we don't know if on average, Population A ages six months, one year or two years faster or slower than Population B. And while many methods are bolstered by a statistical likelihood, this is not the same thing as being certain. (
  • The sandy-haired miss from South Jordan, Utah, with braces on her teeth, an easy smile, a little-girl walk and school-girl shyness, showed she also has a master's touch, a champion's confidence, a winner's determination and shooting skills far beyond her years. (
  • Yasushi Koyama of the Tohoku University Graduate School of Medicine and colleagues looked at more than 25,000 Japanese men and women between age 40 and 64 years in making the determination. (
  • A 30 years old patient came to our observation with five impacted teeth (1.8, 2.8, 3.8, 4.7 and 4.8), as well as with the presence of an impacted supernumerary tooth (distomolar 4.9). (
  • The patient was suggested to allow us to perform a radiologic screening to his two sisters aged 17 and 13 years. (
  • The sample was made up of 396 individuals aged six to 22 years from three Brazilian cities with endemic fluorosis caused by the ingestion of water with high fluoride concentration. (
  • 26). Plaintiff testified T.A. was four years of age. (
  • The known-minimum age of Alaska wolves differed by 0-7 years from estimated age. (
  • One specimen with initially almost black circumocular hair was already rather grey at the age of five years and at the age of 9 years showed a very light grey to almost white face, a feature apparently inherited from the wildcaught father who also showed some white facial hairs at a rather early age and was almost white when he died after 13 years in captivity. (
  • Homo sapiens teeth found at two other caves in this region come from sediment that his group dates to at least 94,000 years ago. (
  • Instead, a variety of other changes independently occurred, including grey to white facial hair (circumocular patches), patchy pigmentation of the skin, decreased vision, cataract, loss of weight, thinning of the fur, loss of some teeth and tartar, but onset of these changes varied individually. (
  • Essentially, we compare the stage of growth shown in the X-ray to existing growth charts from children and teenagers of known ages. (
  • A basic knowledge of human biology, growth and development, and the aging process is needed to identify gradual changes that occur in the skeleton from birth to old age. (
  • A gestation period of 457 d and birth mass of 102 kg (higher than in the literature) was used to determine the age of foetuses whose growth was similar to other uniparous mammals. (
  • He said: 'Teeth retain a growth record. (
  • The Indian atomic energy regulatory board (AERB) has disapproved the practice of taking dental X-ray for determination of a child's age, and has warned such practice are deviations from the terms of its license and registration. (
  • The aim of the present study was the determination of pathological changes and associated pathogens in deceased free-ranging European bat species to evaluate the often assumed potential high health hazard to humans as well as to support veterinarians dealing with injured or sick bats in their clinical investigations. (
Cattle age determination - Wikipedia
Cattle age determination - Wikipedia (
AERB Warns Against Dental X-Rays Solely for the Purpose of Age Determination
AERB Warns Against Dental X-Rays Solely for the Purpose of Age Determination (
Die Beurteilung der Sekundärdentinbildung im Pulpencavum der mandibulären Prämolaren im Orthopantomogramm zur Altersdiagnostik...
Die Beurteilung der Sekundärdentinbildung im Pulpencavum der mandibulären Prämolaren im Orthopantomogramm zur Altersdiagnostik... (
Cadmium in beavers translocated from the Elbe river to the rhine/meuse estuary, and the possible effect on population growth...
Cadmium in beavers translocated from the Elbe river to the rhine/meuse estuary, and the possible effect on population growth... (
Animal Science and Industry: Merle Cunningham, Duane Acker, Mickey LaTour | NHBS Book Shop
Animal Science and Industry: Merle Cunningham, Duane Acker, Mickey LaTour | NHBS Book Shop (
Research - Forest Preserves of Cook County
Research - Forest Preserves of Cook County (
Homesteader's Guide to Farm Animal Dentistry: Estimating Age by Reading Teeth
Homesteader's Guide to Farm Animal Dentistry: Estimating Age by Reading Teeth (
Smilodon - Wikipedia
Smilodon - Wikipedia (
Logansport Pharos-Tribune from Logansport, Indiana on November 5, 1957 · Page 24
Logansport Pharos-Tribune from Logansport, Indiana on November 5, 1957 · Page 24 (
Trying to stem refugee influx, Sweden asks: When is a child not a child? | Top News | Reuters
Trying to stem refugee influx, Sweden asks: When is a child not a child? | Top News | Reuters (
Evidence-Based Forensic Dentistry | Balwant Rai | Springer
Evidence-Based Forensic Dentistry | Balwant Rai | Springer (
Red Fox Longevity | Wildlife Online
Red Fox Longevity | Wildlife Online (
Robert.feranec | The New York State Museum
Robert.feranec | The New York State Museum (
Frontiers | Advancing Research for the Management of Long-Lived Species: A Case Study on the Greenland Shark | Marine Science
Frontiers | Advancing Research for the Management of Long-Lived Species: A Case Study on the Greenland Shark | Marine Science (
Nature of Teaching
Nature of Teaching (
Identification of the age of the dog 狗狗年龄的鉴定 -
Identification of the age of the dog 狗狗年龄的鉴定 - (
Estimation of chronologic age using the aspartic acid racemization method. I. On human rib cartilage | SpringerLink
Estimation of chronologic age using the aspartic acid racemization method. I. On human rib cartilage | SpringerLink (
Dental problems & ageing of the dog by observing its teeth - Stabroek News
Dental problems & ageing of the dog by observing its teeth - Stabroek News (
A serological and bacteriological survey of brucellosis in wild boar (Sus scrofa) in Belgium | BMC Veterinary Research | Full...
A serological and bacteriological survey of brucellosis in wild boar (Sus scrofa) in Belgium | BMC Veterinary Research | Full... (
Immigration agents X-raying migrants to determine age isn't just illegal, it's a misuse of science
Immigration agents X-raying migrants to determine age isn't just illegal, it's a misuse of science (
Evidence for a postreproductive phase in female false killer whales Pseudorca crassidens | Frontiers in Zoology | Full Text
Evidence for a postreproductive phase in female false killer whales Pseudorca crassidens | Frontiers in Zoology | Full Text (
Mehrgarh (
Age assessment by Demirjian's development stages of the third molar: a systematic review | Springer for Research & Development
Age assessment by Demirjian's development stages of the third molar: a systematic review | Springer for Research & Development (
UHS considers synopses, thesis reports | Lahore | | Karachi
UHS considers synopses, thesis reports | Lahore | | Karachi (
Secrets a deer jaw can tell - Radford University
Secrets a deer jaw can tell - Radford University (
MEMORANDUM OPINION for Andrews v. Social Security Administration Commissioner :: Justia Dockets & Filings
MEMORANDUM OPINION for Andrews v. Social Security Administration Commissioner :: Justia Dockets & Filings (
CSIRO PUBLISHING | Marine and Freshwater Research
CSIRO PUBLISHING | Marine and Freshwater Research (
Putting teeth into forensic science
Putting teeth into forensic science (
Teeth Selection for Edentulous Patients in Saudi Arabia | Hausarbeiten publizieren
Teeth Selection for Edentulous Patients in Saudi Arabia | Hausarbeiten publizieren (
Clarks Drugstore: Ibuprofin vs crestor in the USA!
Clarks Drugstore: Ibuprofin vs crestor in the USA! (
Clinical aspects of comparative spectrophotometric analysis in the selection of the colour of acrylic teeth in removable...
Clinical aspects of comparative spectrophotometric analysis in the selection of the colour of acrylic teeth in removable... (