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CC BY-NC-ND 4.0 · Journal of Health and Allied Sciences NU 2022; 12(02): 106-112
DOI: 10.1055/s-0041-1736270
Original Article

Estimation of Sexual Dimorphism of the Mandible in Coastal Karnataka and Kerala Populations using Cone Beam Computed Tomography

Kumuda Rao 
1   Department of Oral Medicine and Radiology, AB Shetty Memorial Institute of Dental Sciences, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India
,
Mahabalesh Shetty 
2   Department of Forensic Medicine and Toxicology, KS Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India
,
U. S. Krishna Nayak 
3   AB Shetty Memorial Institute of Dental Sciences, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India
,
G. Subhas Babu 
1   Department of Oral Medicine and Radiology, AB Shetty Memorial Institute of Dental Sciences, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India
,
D. Prashanth Shetty 
4   Department of Reproductive and Molecular Biology, KS Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India
,
Prajwal K. Shetty
5   Department of Orthodontics and Dentofacial Orthopedics, AB Shetty Memorial Institute of Dental Sciences, Nitte (Deemed to be University), Deralakatte, Mangalore, Karnataka, India
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Abstract

Objective The mandible has been used for sex determination and forensic identification due to its unique anatomy and morphology. Every part of the mandible is unique, including the shape and size of the temperomandibular joint, the ramus, the body and the symphysis region, and the inferior alveolar canal. In addition, the position and placement of the teeth within their sockets are unique for every individual.

Sample Population A study was conducted on 20 males and females to estimate sexual dimorphism using anthropometric measurements obtained by cone beam computed tomography images of the mandible of Karnataka and Kerala populations.

Materials and Methods The mean, standard deviation, and standard error along with the confidence interval of different measurements were documented. Various measurements between the sexes were compared using Student's t-test. Association between categorical variables was analyzed using the Chi-square test. A p-value < 0.05 was considered to be statistically significant. Data were analyzed using statistical SPSS software.

Results The p-value of mRBr L, GA L, and GA R among females was significantly higher in the Karnataka population when compared with that in the Kerala population. The Karnataka State population showed significantly higher values of RL R, BiGBr, and BiCBr among males, and the p-value of the Kerala population for GGL L and GGL R was significant and higher among the males.

Conclusion The data derived from the above study suggest that the mandibular anthropometric measurements used may be applied for forensic sex estimation.

Keywords

sexual dimorphism - forensic facial reconstruction - morphometric measurements - cone beam computed tomography - mandible


Publication History

Article published online:
24 October 2021

© 2021. Nitte (Deemed to be University). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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