NCJ Number
246837
Journal
Journal of Forensic Sciences Volume: 59 Issue: 3 Dated: May 2014 Pages: 601-605
Date Published
May 2014
Length
5 pages
Annotation
The purpose of this study was to evaluate pre-existing CBCT images of a large sample of adult females and males to provide data on foramen magnum and mandibular measures of sexual dimorphism for use as a reference sample in cases of establishing identity in unknown fragmentary skulls.
Abstract
The purpose of this study was to evaluate pre-existing CBCT images of a large sample of adult females and males to provide data on foramen magnum and mandibular measures of sexual dimorphism for use as a reference sample in cases of establishing identity in unknown fragmentary skulls. The study group consisted of 161 adult patients. 3D images of the patients were assessed retrospectively. FM measurements were obtained from reformatted axial sections. Six mandibular measurements were taken. According to the results, the study identified four mandibular measurements as final predictors of sex which are as follows: the gonial angle G-angle and ramus length Ramus-L, gonion-gnathion length G-G-L and bigonial breadth BG-Br. It was found that the cross-validated grouped overall predictive accuracy was 83.2 percent for FM and mandible measurements. It could correctly identify males in 77.3 percent and females in 87.4 percent of the cases. To assess sexual dimorphism, the gonial angle and ramus, gonion-gnathion lengths, and bigonial breadth of the mandible and sagittal diameter of the FM may be used on CBCT images. Abstract published by arrangement with John Wiley & Sons.