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Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study

CONTEXT: Estimation of the age is a procedure adopted by anthropologists, archeologists and forensic scientists. Different methods have been undertaken. However none of them meet the standards as Demirjian's method since 1973. Various researchers have applied this method, in both original and m...

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Autores principales: Bijjaragi, Shobha C, Sangle, Varsha A, Saraswathi, FK, Patil, Veerendra S, Ashwini Rani, SR, Bapure, Sunil K
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/PMC4451647/
https://www.ncbi.nlm.nih.gov/pubmed/26097317
http://dx.doi.org/10.4103/0973-029X.157223
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author Bijjaragi, Shobha C
Sangle, Varsha A
Saraswathi, FK
Patil, Veerendra S
Ashwini Rani, SR
Bapure, Sunil K
author_facet Bijjaragi, Shobha C
Sangle, Varsha A
Saraswathi, FK
Patil, Veerendra S
Ashwini Rani, SR
Bapure, Sunil K
author_sort Bijjaragi, Shobha C
collection PubMed
description CONTEXT: Estimation of the age is a procedure adopted by anthropologists, archeologists and forensic scientists. Different methods have been undertaken. However none of them meet the standards as Demirjian's method since 1973. Various researchers have applied this method, in both original and modified form (Chaillet and Demirjian in 2004) in different ethnic groups and the results obtained were not satisfactory. AIMS: To determine the applicability and accuracy of modified Demirjian's method of dental age estimation (AE) in 8–18 year old Tibetan young adults to evaluate the interrelationship between dental and chronological age and the reliability between intra- and inter observer relationship. SETTINGS AND DESIGN: Clinical setting and computerized design. SUBJECTS AND METHODS: A total of 300 Tibetan young adults with an age range from 8 to 18 years were recruited in the study. Digital panoramic radiographs (DPRs) were evaluated as per the modified Demirjian's method (2004). STATISTICAL ANALYSIS USED: Pearson correlation, paired t-test, linear regression analysis. RESULTS: Inter -and intraobserver reliability revealed a strong agreement. A positive and strong association was found between chronological age and estimated dental age (r = 0.839) with P < 0.01. Modified Demirjian method (2004) overestimated the age by 0.04 years (2.04 months)in Tibetan young adults. CONCLUSIONS: Results suggest that, the modified Demirjian method of AE is not suitable for Tibetan young adults. Further studies: With larger sample size and comparision with different methods of AE in a given population would be an interesting area for future research.
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spelling pubmed-44516472015-06-19 Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study Bijjaragi, Shobha C Sangle, Varsha A Saraswathi, FK Patil, Veerendra S Ashwini Rani, SR Bapure, Sunil K J Oral Maxillofac Pathol Original Article CONTEXT: Estimation of the age is a procedure adopted by anthropologists, archeologists and forensic scientists. Different methods have been undertaken. However none of them meet the standards as Demirjian's method since 1973. Various researchers have applied this method, in both original and modified form (Chaillet and Demirjian in 2004) in different ethnic groups and the results obtained were not satisfactory. AIMS: To determine the applicability and accuracy of modified Demirjian's method of dental age estimation (AE) in 8–18 year old Tibetan young adults to evaluate the interrelationship between dental and chronological age and the reliability between intra- and inter observer relationship. SETTINGS AND DESIGN: Clinical setting and computerized design. SUBJECTS AND METHODS: A total of 300 Tibetan young adults with an age range from 8 to 18 years were recruited in the study. Digital panoramic radiographs (DPRs) were evaluated as per the modified Demirjian's method (2004). STATISTICAL ANALYSIS USED: Pearson correlation, paired t-test, linear regression analysis. RESULTS: Inter -and intraobserver reliability revealed a strong agreement. A positive and strong association was found between chronological age and estimated dental age (r = 0.839) with P < 0.01. Modified Demirjian method (2004) overestimated the age by 0.04 years (2.04 months)in Tibetan young adults. CONCLUSIONS: Results suggest that, the modified Demirjian method of AE is not suitable for Tibetan young adults. Further studies: With larger sample size and comparision with different methods of AE in a given population would be an interesting area for future research. Medknow Publications & Media Pvt Ltd 2015 /pmc/articles/PMC4451647/ /pubmed/26097317 http://dx.doi.org/10.4103/0973-029X.157223 Text en Copyright: © Journal of Oral and Maxillofacial Pathology 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
Bijjaragi, Shobha C
Sangle, Varsha A
Saraswathi, FK
Patil, Veerendra S
Ashwini Rani, SR
Bapure, Sunil K
Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study
title Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study
title_full Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study
title_fullStr Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study
title_full_unstemmed Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study
title_short Age estimation by modified Demirjian's method (2004) and its applicability in Tibetan young adults: A digital panoramic study
title_sort age estimation by modified demirjian's method (2004) and its applicability in tibetan young adults: a digital panoramic study
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4451647/
https://www.ncbi.nlm.nih.gov/pubmed/26097317
http://dx.doi.org/10.4103/0973-029X.157223
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