Human dental age estimation using third molar developmental stages: Accuracy of age predictions not using country specific information

Thevissen, Patrick; Alqerban, Ali; Asaumi, Jun Ichi; Kahveci, F; Kaur, Jatinder; Kim, Y K; Pittayapat, Pisha; Vlierberghe, M Van; Zhang, Yang; Fieuws, Steffen; Willems, Guy

doi:10.1016/j.forsciint.2010.04.040

Cited by 73 publications

(56 citation statements)

References 26 publications

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“…It is important to note, that the variation in timing of tooth formation between populations is not well understood and the existence of differences and their meaning has been debated by many researchers (Chaillet et al 2010, De Luca et al 2012, Harris 2007. While the data from this study lends support for the notion that such as difference exists, this data as well as research from others demonstrates that the impact of group differences on the accuracy of age estimation of an individual is small (Braga et al 2005;Thevissen et al 2010;Liversidge & Marsden 2010).…”

Section: Discussionmentioning

confidence: 46%

Accuracy of Dental Age in Nonadults: A Comparison of Two Methods for Age Estimation Using Radiographs of Developing Teeth

Santana

Bethard

Moore

2017

Journal of Forensic Sciences

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The aim of this study was to test the accuracy of two methods for age estimation in non-adults, Cameriere's European formula and AlQahtani's London Atlas, on a multiethnic American sample. Radiographs of European, Hispanic and American Indian children (166 girls and 194 boys) aged between 6 and 17 years were analyzed following both methods. The accuracy of each method was assessed using the mean difference and the mean of the absolute values of the residuals (mean prediction error). Categories relating to ethnicity, sex and age were applied to the assessment of accuracy in order to compare these two approaches. Results indicate that Cameriere's European formula significantly underestimated age for both sexes (p < 0.001), with a mean difference of -

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Section: Discussionmentioning

confidence: 46%

Accuracy of Dental Age in Nonadults: A Comparison of Two Methods for Age Estimation Using Radiographs of Developing Teeth

Santana

Bethard

Moore

2017

Journal of Forensic Sciences

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“…As a consequence, any residual correlation between teeth after partialing out the effect of age will lead to interval estimates for age that are too narrow. Thevissen et al (2010) have presented an analysis that does not assume conditional independence, but in the absence of the raw data or any of the covariances from Moorrees et al's studies, we cannot address the problem of assuming conditional independence. The second problem with our approach so far is that the increase in precision that comes from using additional teeth does not take into account the between-tooth component of variance in the age estimates.…”

Section: Results and Discussion Application To Known-age Individualsmentioning

confidence: 99%

“…Two of these root apex stages were eventually eliminated for the Moorrees et al's studies. The rationale given for collapsing scores in any of the newer systems is to decrease intraobserver and/or interobserver error in scoring, and usually Cohen's kappa coefficient is presented as a measure of repeatability for any scoring used in a given study (Dhanjal et al, 2006;Liversidge et al, 2006;Cameriere et al, 2008;Roberts et al, 2008;Butti et al, 2009;AlQahtani et al, 2010;Blenkin and Evans, 2010;Liversidge and Marsden, 2010;Maia et al, 2010;Thevissen et al, 2010;Galić et al, 2011). Weighted (also known as generalized) kappa (Landis and Koch, 1977) is an appropriate measure of repeatability for ordinal categorical traits, but as Harris (2007) has observed, repeatability is only one of the considerations in choosing a scoring system.…”

Section: Definition Of Ordered Stagesmentioning

confidence: 99%

Estimating the distribution of probable age‐at‐death from dental remains of immature human fossils

Shackelford

Harris

Konigsberg

2011

American J Phys Anthropol

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In two historic longitudinal growth studies, Moorrees et al. (Am J Phys Anthropol 21 (1963) 99-108; J Dent Res 42 (1963) 1490-1502) presented the "mean attainment age" for stages of tooth development for 10 permanent tooth types and three deciduous tooth types. These findings were presented graphically to assess the rate of tooth formation in living children and to age immature skeletal remains. Despite being widely cited, these graphical data are difficult to implement because there are no accompanying numerical values for the parameters underlying the growth data. This analysis generates numerical parameters from the data reported by Moorrees et al. by digitizing 358 points from these tooth formation graphs using DataThief III, version 1.5. Following the original methods, the digitized points for each age transition were conception-corrected and converted to the logarithmic scale to determine a median attainment age for each dental formation stage. These values are subsequently used to estimate age-at-death distributions for immature individuals using a single tooth or multiple teeth, including estimates for 41 immature early modern humans and 25 immature Neandertals. Within-tooth variance is calculated for each age estimate based on a single tooth, and a between-tooth component of variance is calculated for age estimates based on two or more teeth to account for the increase in precision that comes from using additional teeth. Finally, we calculate the relative probability of observing a particular dental formation sequence given known-age reference information and demonstrate its value in estimating age for immature fossil specimens.

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“…This research paper has evaluated third molar development with all associated variables to provide comprehensive information which might be valuable for future reference. Besides, third molar development shows definite ethnic variations; hence the outcomes needed to be interpreted in terms of population studied and thus universal norms may not be established at present [27,28]. This warrants the necessity of a more comprehensive research using larger sample size and the comparisons of the population-specific study outcomes in further extensions.…”

Section: Discussionmentioning

confidence: 99%

Radiographic Evaluation of Developmental Stages of Third Molar in Relation to Chronological Age as Applicability in Forensic Age Estimation

Panchabhai¹

2012

Dentistry

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Objectives: The need for age estimation is increasing day by day; difficulty in human age estimation after 14 years of age has greatly shifted the focus on third molar. Radiographic evaluation of presence, position and degree of third molar formation can be utilized in forensic age estimation. The present study aimed to evaluate the development of third molar in relation to chronological age. Methods:The present study included sample of 479 subjects in the age range 5-30 years, for each subject, orthopantomograph was taken. To assess the developmental stages of third molars; the staging system described by Nolla [1] CM was used.Results: Overall, no significant differences were observed in mean ages at which the developmental stages were reached in all four third molars. The absence of crypt was observed more for maxillary third molars, contrarily, stages 1, 2, 3 were reached earlier in mandibular third molars. In case of presence of four completely developed third molars in a subject, the probability of an individual to be older than 18 years of age was 94.35% for females and 95.23% for males. Conclusion:Third molar teeth are well known for their variability in development, eruption pattern, size, contour and relative positions as compare to other teeth. In spite of variations, third molars are still at the centre of medicolegal interest; and its significance in age determination is justified as no other reliable age indicator is available to determine the age in adults. Besides, it will help to separate adolescents from adults as jurisprudence differs for juvenile detainees.

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Human dental age estimation using third molar developmental stages: Accuracy of age predictions not using country specific information

Cited by 73 publications

References 26 publications

Accuracy of Dental Age in Nonadults: A Comparison of Two Methods for Age Estimation Using Radiographs of Developing Teeth

Accuracy of Dental Age in Nonadults: A Comparison of Two Methods for Age Estimation Using Radiographs of Developing Teeth

Estimating the distribution of probable age‐at‐death from dental remains of immature human fossils

Radiographic Evaluation of Developmental Stages of Third Molar in Relation to Chronological Age as Applicability in Forensic Age Estimation

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