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Sexual dimorphism in human browridge volume measured from 3D models of dry crania: A new digital morphometrics approach
CUNY, NY USA NYCEP, NY USA University of Calif Santa Barbara, CA 93106 USA .
University of Calif Santa Barbara, CA 93106 USA University of Calif Berkeley, CA 94720 USA .
Johns Hopkins University, MD 21205 USA .
Linköping University, Department of Management and Engineering, Law and Legal Philosophy. Linköping University, Faculty of Arts and Sciences.
2012 (English)In: Forensic Science International, ISSN 0379-0738, E-ISSN 1872-6283, Vol. 222, no 1-3Article in journal (Refereed) Published
Abstract [en]

Sex estimation from the human skull is often a necessary step when constructing a biological profile from unidentified human remains. Traditional methods for determining the sex of a skull require observers to rank the expression of sexually dimorphic skeletal traits by subjectively assessing their qualitative differences. One of these traits is the prominence of the glabellar region above the browridge. In this paper, the volume of the browridge region was measured from digital 3D models of 128 dry crania ( 65 female, 63 male). The 3D models were created with a desktop laser scanner, and the browridge region of each 3D model was isolated using geometric planes defined by cranial landmarks. Statistical analysis of browridge-to-cranium volume ratios revealed significant differences between male and female crania. Differences were also observed between geographically distinct populations, and between temporally distinct populations from the same locale. The results suggest that in the future, sex determination of human crania may be assisted by quantitative computer-based volume calculations from 3D models, which can provide increased objectivity and repeatability when compared to traditional forensic techniques. The method presented in this paper can easily be extended to other volumetric regions of the human cranium.

Place, publisher, year, edition, pages
Elsevier , 2012. Vol. 222, no 1-3
Keyword [en]
Forensic anthropology, Physical anthropology, 3D laser scanner, Volume measurement, Sex estimation, Craniometrics
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-84737DOI: 10.1016/j.forsciint.2012.06.013ISI: 000308690600067OAI: diva2:561498

Funding Agencies|National Science Foundation|BCS 1061313|Santa Ynez Band of Chumash Indians||

Available from: 2012-10-19 Created: 2012-10-19 Last updated: 2014-05-08

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