Sex Determination in Mandibles in the First Year of Life by a Quantitative Approach

Sex Determination in Mandibles in the First Year of Life by a Quantitative Approach

Alternative title Determinación del Sexo en Mandíbulas en el Primer Año de Vida Mediante una Aproximación Cuantitativa
Author Galdames, Ivan Claudio Suazo Autor UNIFESP Google Scholar
Matamala, Daniela Zavando Autor UNIFESP Google Scholar
Smith, Ricardo Luiz Autor UNIFESP Google Scholar
Institution Univ Talca
Universidade Federal de São Paulo (UNIFESP)
Abstract Numerous studies have shown that skeletal characteristics vary among different populations. Several authors suggest that it is possible to determine sex through the anatomical evaluation of children mandible, however there are few morphometrical studies conducted with such specimens. The purpose of this study was to analyze several mandibular dimensions and identify the ones that could be useful to perform sex differentiation in a sample of Brazilian young children. For this study we used 32 children dry mandibles of known sex, age ranging from 0 to 1 year old. The mandibles pertain to the collection of the Skull Museum of the Universidade Federal de Sao Paulo (UNIFESP). The parameters included bicondilar width, bigonial width, minimum width and height of the mandibular ramus, gonion-gnation length, height of the mandibular symphysis and transverse and anteroposterior condylar dimensions. The SPSS program was used to carry on the discriminant function analysis and the T test (p < 0.05). There were no statistically significant differences that could allow identification of a specific parameter for sex determination. However, most of the dimensions were higher in male than in female, except for the minimum width of the mandibular ramus (0.2-0.16 mm) and transverse diameter of the right condyle (0.16mm). The values obtained for the anteroposterior diameter of the mandibular head were the most different between genders, although no statistically significance was found. Discriminant function analysis indicated that, despite differences, none of the evaluated parameters allow for sex classification with enough reliability. In conclusion, there is little sexual dimorphism in children's mandibles during the first year of life and anatomical analysis of this structure is not recommended as reliable quantitative approach for sex differentiation with forensic purposes.
Keywords Sexual Dimorphism
Sex determination
Infants
Mandibles
Language English
Date 2009-03-01
Published in International Journal Of Morphology. Temuco: Soc Chilena Anatomia, v. 27, n. 1, p. 113-116, 2009.
ISSN 0717-9502 (Sherpa/Romeo, impact factor)
Publisher Soc Chilena Anatomia
Extent 113-116
Origin http://dx.doi.org/10.4067/S0717-95022009000100020
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000266571500020
SciELO ID S0717-95022009000100020 (statistics in SciELO)
URI http://repositorio.unifesp.br/11600/44065

Show full item record




File

File Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Search


Browse

Statistics

My Account