Sex dimorphism according to the nasozygomatic triangle

Authors

DOI:

https://doi.org/10.20396/bjos.v20i00.8660624

Keywords:

Forensic anthropology, Sex determination by skeleton, Sex characteristics, Skull

Abstract

Sex is one of the first features to be diagnosed in human identification, composing, with age, ancestry and stature, the so called “big four”. Aim: The present study aimed to metrically analyze the sexual dimorphism in skulls of known age and sex from Rio Grande do Sul – Brazil. Methods: This was a crosssectional study of metrical analysis, which used a sample comprised of 209 human skulls (106 male and 103 female) older than 22 years old at the time of death, undamaged and without signs of trauma or abnormalities. The point nasion and the most superior points on the zygomaticotemporal sutures from each side were connected forming a triangle. This area was calculated using Heron’s formula, and the results were submitted for statistical analysis. Results: All measurements showed significant values for sexual dimorphism. Through the area of the triangle, it was possible to determine sex with an accuracy of 83.97% for males and 83.50% for females. Conclusion: This simple method requires only a caliper, and still can be reliable for forensic human identification. It must be diffused and tested on other samples, and can be used as a good and inexpensive tool for experts in day-to-day practice.

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Author Biographies

Fábio Delwing, State University of Campinas

Department of Forensic Dentistry, Piracicaba Dental School, Sate University of Campinas, São Paulo, Brazil. Forensic Expert, Police Department of Federal District, Brazil.

Rachel Lima Ribeiro Tinoco, Federal University of Rio de Janeiro

National Museum, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.

Geraldo Elias Miranda, State University of Campinas

Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil. Forensic Expert, Police Department of Minas Gerais, Brazil. Department of Forensic Dentistry, University of São Paulo, Brazil.

Laíse Nascimento Correia Lima, State University of Campinas

Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil. Department of Forensic Dentistry, Federal University of Paraíba, Brazil.

Luiz Francesquini Júnior, State University of Campinas

Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil.

Eduardo Daruge Júnior, State University of Campinas

Department of Forensic Dentistry, Piracicaba Dental School, State University of Campinas, São Paulo, Brazil.

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Published

2021-02-10

How to Cite

1.
Delwing F, Tinoco RLR, Miranda GE, Lima LNC, Francesquini Júnior L, Daruge Júnior E. Sex dimorphism according to the nasozygomatic triangle. Braz. J. Oral Sci. [Internet]. 2021 Feb. 10 [cited 2022 Dec. 6];20(00):e210624. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8660624

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