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

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...

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Autores principales: Lewis, Amitha J., Boaz, Karen, Nagesh, K. R, Srikant, N, Gupta, Neha, Nandita, K. P, Manaktala, Nidhi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4430575/
https://www.ncbi.nlm.nih.gov/pubmed/26005306
http://dx.doi.org/10.4103/0975-1475.155081
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author Lewis, Amitha J.
Boaz, Karen
Nagesh, K. R
Srikant, N
Gupta, Neha
Nandita, K. P
Manaktala, Nidhi
author_facet Lewis, Amitha J.
Boaz, Karen
Nagesh, K. R
Srikant, N
Gupta, Neha
Nandita, K. P
Manaktala, Nidhi
author_sort Lewis, Amitha J.
collection PubMed
description 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, R(2) 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.
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spelling pubmed-44305752015-05-22 Demirjian's method in the estimation of age: A study on human third molars Lewis, Amitha J. Boaz, Karen Nagesh, K. R Srikant, N Gupta, Neha Nandita, K. P Manaktala, Nidhi J Forensic Dent Sci Original Article 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, R(2) 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. Medknow Publications & Media Pvt Ltd 2015 /pmc/articles/PMC4430575/ /pubmed/26005306 http://dx.doi.org/10.4103/0975-1475.155081 Text en Copyright: © Journal of Forensic Dental Sciences http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Lewis, Amitha J.
Boaz, Karen
Nagesh, K. R
Srikant, N
Gupta, Neha
Nandita, K. P
Manaktala, Nidhi
Demirjian's method in the estimation of age: A study on human third molars
title Demirjian's method in the estimation of age: A study on human third molars
title_full Demirjian's method in the estimation of age: A study on human third molars
title_fullStr Demirjian's method in the estimation of age: A study on human third molars
title_full_unstemmed Demirjian's method in the estimation of age: A study on human third molars
title_short Demirjian's method in the estimation of age: A study on human third molars
title_sort demirjian's method in the estimation of age: a study on human third molars
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4430575/
https://www.ncbi.nlm.nih.gov/pubmed/26005306
http://dx.doi.org/10.4103/0975-1475.155081
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