Demirjian’s method in the estimation of age: A study on human third molars

Lewis, Amitha J. and Boaz, Karen and *, Nagesh K. R and *, Srikant N and Gupta, Neha and *, Nandita KP and Manaktala, Nidhi (2015) Demirjian’s method in the estimation of age: A study on human third molars. Journal of Forensic Dental Sciences, 7 (2). pp. 153-157. ISSN 0975-1475

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Abstract

Aim: The primary aim of the following study is to estimate the chronological age based on the stages of third molar development following the eight stages (A to H) method of Demirjian et al. (along with two modifications‑Orhan) and secondary aim is to compare third molar development with sex and age. Materials and Methods: The sample consisted of 115 orthopantomograms from South Indian subjects with known chronological age and gender. Multiple regression analysis was performed with chronological age as the dependable variable and third molar root development as independent variable. All the statistical analysis was performed using the SPSS 11.0 package (IBM ® Corporation). Results: Statistically no significant differences were found in third molar development between males and females. Depending on the available number of wisdom teeth in an individual, R2 varied for males from 0.21 to 0.48 and for females from 0.16 to 0.38. New equations were derived for estimating the chronological age. Conclusion: The chronological age of a South Indian individual between 14 and 22 years may be estimated based on the regression formulae. However, additional studies with a larger study population must be conducted to meet the need for population‑based information on third molar development.

Item Type: Article
Uncontrolled Keywords: Age estimation, Demirjian’s method, teeth, third molar
Subjects: Dentistry > MCODS Mangalore > Oral Pathology
Depositing User: KMCMLR User
Date Deposited: 27 May 2015 05:33
Last Modified: 27 May 2015 05:33
URI: http://eprints.manipal.edu/id/eprint/142777

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