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At least 19 recordsLinked to original sources
PubMed1997

[Comparison of two methods of age determination in teeth of known age from wild carnivores].

Two age-determining methods were conducted on representatives of known age from the Order Carnivora (4 red foxes, 3 tree martens, 3 stone martens, 2 racoons, 2 badgers, 2 polecat and one otter). Age determination employed with the aid of tooth wear nearly agrees with the real age of the animals. Dating based on the formation of the age-dependent cement zone coincided well with the known ages of the individual specimens. However, in real foxes the figure one must be added to the number of cementum layers counted determining the definitive age of individuals. For representation of the cementum layers transverse sections of the apical part of the tooth root of canini, P2 and P3, stained with methylene blue, should be used. It is important to note that the dentino-cemental line should not be considered when counting the year rings in the cement.

Age Determination by Teeth↗
PubMed1999

Age determination by teeth examination: a comparison between different morphologic and quantitative analyses.

Age determination by teeth examination is one of the main means of determining personal identification. Current studies have suggested different techniques for determining the age of a subject by means of the analysis of microscopic and macroscopic structural modifications of the tooth with ageing. The histological approach is useful among the various methodologies utilized for this purpose. It is still unclear as to what is the best technique, as almost all the authors suggest the use of the approach they themselves have tested. In the present study, age determination by means of microscopic techniques has been based on the quantitative analysis of three parameters, all well recognized in specialized literature: 1. dentinal tubules density/sclerosis 2. tooth translucency 3. analysis of the cementum thickness. After a description of the three methodologies (with automatic image processing of the dentinal sclerosis utilizing an appropriate computer program developed by the authors) the results obtained on cases using the three different approaches are presented, and the merits and failings of each technique are identified with the intention of identifying the one offering the least degree of error in age determination.

Journal Article↗
PubMed1980

Gustafson's method for age determination from teeth--a modification for the use of dentists in identification teams.

Gustafson's method for age determination from teeth is based on the evaluation of ground sections of teeth. Six age-associated parameters are evaluated in the ground section and are compared to a regression curve of age versus the age-associated changes. Two of these changes, transparency of radicular dentin and secondary dentin, have the highest correlation with age. The evaluation of these parameters only from thin (0.25-mm) ground sections may lead to an artificially high "secondary dentin value." These artifacts may be caused by the attempt to include the whole pulp chamber and root canal in a 0.25-mm-thick ground section and by an accidental overgrinding of the apical area of the root, respectively. These artifacts were encountered occasionally even in ground sections prepared by highly trained personnel and became more frequent in ground sections prepared by a person who, though trained, did not use this technique daily. A modification of the data-collecting method is suggested to make possible the use of thick (1.0-mm) ground sections for the evaluation of most of the aging criteria, thereby eliminating the possible inaccuracies in the preparation and evaluation of the thin (0.25-mm) ground sections.

Age Determination by Teeth↗
PubMed1988

Failure of use of cemental annulations in teeth to determine the age of humans.

The reliability of cemental annulation counts in teeth was examined to determine its value as an age indicator for humans. One hundred extracted human teeth were embedded in polyester casting resin and sectioned using a diamond wafering saw. Thin sections were photomicrographed, projected, and counted in a double blind random method of presentation. The age of the specimen was determined by adding the number of cemental annulations counted by the observers and the eruption age of the specific tooth that was used. The data analyzed by simple regression indicated that determining chronologic age in humans from cemental annulations is not possible.

Adolescent↗
PubMed1982

[Age determination by teeth].

The aim of our work was to find out to what extent atrophy of the alveolus, transparence of the root dentin, number of missing teeth, abrasion and the mineral content may be indicators of the age of an unknown person. In all these factors we found statistically significant dependence on age (P less than 0.05), with the exception of the sodium and magnesium content. The estimate of age can be made with relatively good reliability according to the atrophy of the alveolus, transparence of the dentin, abrasion and the number of missing teeth. The best results are achieved when a summary estimate of age is made.

Adolescent↗
PubMed1995

The validity of four methods for age determination by teeth in Swedish children: a multicentre study.

Four principally different methods for age determination of children by means of teeth have been tested on a Swedish population. 197 panoramic radiographs of children aged 5, 6, 9 and 12 years were collected and examined by 13 independent pedodontists, radiologists and forensic odontologists. The results showed a satisfactory precision for those methods which have been developed on a Scandinavian population, but a method from a French-Canadian population showed a consistent over-estimation when used on the Swedish children.

Age Determination by Teeth↗
PubMed2000

[Accuracy of two methods of age determination by teeth in the Hungarian population].

The authors tested two methods of age estimation through dental examination. 42 autopsy cases, ages 18 to 79, were randomly selected by the University Medical School of Pécs, Department of Forensic Medicine in 1997-1998. After the odontograms were taken, one tooth from each individual was removed from the corpses and examined using both the Gustafson's and the Johanson's methods for age calculation. The results according to both methods showed a large standard deviation. It suggests the necessity of national data base and the re-examination of all of the methods tested on different population samples. The authors of this paper would like to inspire a revival of Hungarian forensic odontostomatology.

Adult↗
PubMed1980

[Age determination by teeth].

Of the many measurements cited in the literature, correlation with age can only be established for the length of the transparent root dentine and that of the pulp cavity. The chronological age can be estimated with 90% reliability (+/- 5 years) for subjects between the ages of 20 and 60 by evaluating the quotients of both measurements. The time involved for the examination can be considerably reduced by using a combination of photographic and roentgenologic methods. The good correlation with age however was not reproducible.

Age Determination by Teeth↗