title: Mandibular sexual dimorphism analysis in CBCT scans.
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.
authors.affiliation: Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Limeira Avenue, 901, PO Box 52, Piracicaba, SP, Brazil. Electronic address: thiagodeo.gamba@hotmail.com.
authors.forename: Thiago de Oliveira
authors.initials: Tde O
authors.lastname: Gamba
authors.affiliation: Superior School of Agriculture "Luiz de Queiroz" Technical Section of Information Technology, University of São Paulo, Pádua Dias Avenue, 11, PO Box 19, Piracicaba, SP, Brazil. Electronic address: macalves@usp.br.
authors.forename: Marcelo Corrêa
authors.initials: MC
authors.lastname: Alves
authors.affiliation: Division of Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Limeira Avenue, 901, PO Box 52, Piracicaba, SP, Brazil. Electronic address: haiter@fop.unicamp.br.
authors.forename: Francisco
authors.initials: F
authors.lastname: Haiter-Neto
mesh_terms: D000293:Adolescent; D000328:Adult; D001938:Brazil; D054893:Cone-Beam Computed Tomography; D016002:Discriminant Analysis; D005260:Female; D018732:Forensic Anthropology; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008334:Mandible / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D008875:Middle Aged; D012189:Retrospective Studies; D054881:Sex Determination by Skeleton; D055815:Young Adult
keywords: Cone-beam computed tomography; Forensic dentistry; Forensic science; Mandible; Sex