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Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample

BACKGROUND: Different dental features have contributed significantly toward sex determination in the forensic anthropological contexts. Population-specific standards (discriminant functions or regression formulae) have been suggested for various population groups to identify the sex of an unknown in...

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Autores principales: Tabasum, Qutsia, Sehrawat, Jagmahender Singh, Talwar, Manjit Kaur, Pathak, Raj Kamal
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5887644/
https://www.ncbi.nlm.nih.gov/pubmed/29657498
http://dx.doi.org/10.4103/jfo.jfds_58_16
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author Tabasum, Qutsia
Sehrawat, Jagmahender Singh
Talwar, Manjit Kaur
Pathak, Raj Kamal
author_facet Tabasum, Qutsia
Sehrawat, Jagmahender Singh
Talwar, Manjit Kaur
Pathak, Raj Kamal
author_sort Tabasum, Qutsia
collection PubMed
description BACKGROUND: Different dental features have contributed significantly toward sex determination in the forensic anthropological contexts. Population-specific standards (discriminant functions or regression formulae) have been suggested for various population groups to identify the sex of an unknown individual from dental dimensions and other odontometric features. The main purpose of the present investigation was to examine the degree of sexual dimorphism exhibited by the human teeth of North Indians and identify importance as a forensic tool in sex determination. MATERIALS AND METHODS: The linear and diagonal dimensions were recorded at both crown and cementoenamel junction levels of 58 upper and 72 lower molars of 130 Northwest Indian subjects (73 males and 57 females). The measurements were subjected to appropriate statistical analyses to estimate the sex estimation accuracy from lower and upper molars separately. RESULTS: Univariate analyses revealed that molar teeth had greater dimensions in males than the females and the mesiodistal cervical diameter (MDCV) was found to be the most suitable variable for sex determination of the molars. The classification results were in agreement with the previously conducted studies. The index of sexual dimorphism (ISD) was calculated to be higher in lower molars than the upper molars, and the highest sex differences were observed for MDCV based on the ISD. The overall sex estimation accuracy obtained from multivariate discriminant function analysis and regression analysis of pooled data was 70.0% (74% males, 64.9% females) and 66.9% (78.1% males, 52.6% females), respectively. CONCLUSIONS: Odontometrics can play a significant role in establishing the biological identity of an unknown individual even from a single tooth in the absence of other sophisticated molecular or biochemical techniques used for this purpose.
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spelling pubmed-58876442018-04-13 Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample Tabasum, Qutsia Sehrawat, Jagmahender Singh Talwar, Manjit Kaur Pathak, Raj Kamal J Forensic Dent Sci Original Article BACKGROUND: Different dental features have contributed significantly toward sex determination in the forensic anthropological contexts. Population-specific standards (discriminant functions or regression formulae) have been suggested for various population groups to identify the sex of an unknown individual from dental dimensions and other odontometric features. The main purpose of the present investigation was to examine the degree of sexual dimorphism exhibited by the human teeth of North Indians and identify importance as a forensic tool in sex determination. MATERIALS AND METHODS: The linear and diagonal dimensions were recorded at both crown and cementoenamel junction levels of 58 upper and 72 lower molars of 130 Northwest Indian subjects (73 males and 57 females). The measurements were subjected to appropriate statistical analyses to estimate the sex estimation accuracy from lower and upper molars separately. RESULTS: Univariate analyses revealed that molar teeth had greater dimensions in males than the females and the mesiodistal cervical diameter (MDCV) was found to be the most suitable variable for sex determination of the molars. The classification results were in agreement with the previously conducted studies. The index of sexual dimorphism (ISD) was calculated to be higher in lower molars than the upper molars, and the highest sex differences were observed for MDCV based on the ISD. The overall sex estimation accuracy obtained from multivariate discriminant function analysis and regression analysis of pooled data was 70.0% (74% males, 64.9% females) and 66.9% (78.1% males, 52.6% females), respectively. CONCLUSIONS: Odontometrics can play a significant role in establishing the biological identity of an unknown individual even from a single tooth in the absence of other sophisticated molecular or biochemical techniques used for this purpose. Medknow Publications & Media Pvt Ltd 2017 /pmc/articles/PMC5887644/ /pubmed/29657498 http://dx.doi.org/10.4103/jfo.jfds_58_16 Text en Copyright: © 2018 Journal of Forensic Dental Sciences http://creativecommons.org/licenses/by-nc-sa/4.0 This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
Tabasum, Qutsia
Sehrawat, Jagmahender Singh
Talwar, Manjit Kaur
Pathak, Raj Kamal
Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample
title Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample
title_full Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample
title_fullStr Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample
title_full_unstemmed Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample
title_short Odontometric sex estimation from clinically extracted molar teeth in a North Indian population sample
title_sort odontometric sex estimation from clinically extracted molar teeth in a north indian population sample
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5887644/
https://www.ncbi.nlm.nih.gov/pubmed/29657498
http://dx.doi.org/10.4103/jfo.jfds_58_16
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