Mandibular sexual dimorphism analysis in CBCT scans

Journal of Forensic and Legal Medicine
Thiago de Oliveira GambaF Haiter-Neto

Abstract

The aim of this study was to evaluate sexual dimorphism using anthropometric measurements on mandibular images obtained by cone beam computed tomography (CBCT). The sample consisted of 160 CT scans collected from a Brazilian population (74 males, 86 females) aged 18-60 years. The CBCT images were analyzed by five reviewers. Six measurements (ramus length, gonion-gnathion length, minimum ramus breadth, gonial angle, bicondylar breadth, and bigonial breadth) were collected for the sexual prediction analysis. For the statistical analysis, intraclass correlation was used to evaluate intra- and inter-reviewers, analysis of variance was used to compare the mean values of these measurements, binary logistic regression equations were created to predict sex. Using these four variables, the rate of correct sex classification was 95.1%. After, the discriminant function was used to validate the formula built. Accuracy of 93.33% and 94.74% was found for estimating male and females, respectively. Thus, the formula developed in this study can be used for sex estimation in forensic settings.

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Citations

Nov 13, 2018·Aesthetic Surgery Journal·Andrew A JaconoNigar N Ahmedli
Apr 15, 2019·International Journal of Legal Medicine·Markéta ČechováJana Velemínská
Feb 6, 2020·Contemporary Clinical Dentistry·Anas Salem AlbalawiSantosh Patil
Aug 4, 2020·Cranio : the Journal of Craniomandibular Practice·Fernanda Chiguti YamashitaLilian Cristina Vessoni Iwaki

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