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Recent Human Sexual Dimorphism Study Using Cephalometric Plots on Lateral Teleradiography and Discriminant Function Analysis

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The examination of skull sexual dimorphism has been the subject of numerous morphologic and craniometric studies, but the disadvantage of these studies is that they are dependent on the experience of the operator and involve subjectivity. In 1996, a team from Taiwan refined the methods enabling the sex of an individual to be determined using cephalometric plots made from lateral teleradiography. To validate their work using a European population, 114 dry skulls (59 men and 55 women) were examined. Cephalometric plots were made on lateral teleradiography with an orthodontic software and 18 cephalometric variables were analyzed. Sex was determined with 95.6% accuracy using the 18 variables discriminant function. A subset of eight variables was selected and could predict sex with the same accuracy. In conclusion, it can be said that skull-sexing methods using lateral teleradiography seem always suitable but the most indicative variables could differ relative to the ethnic population concerned.
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Keywords: discriminant function analysis; forensic science; lateral roentgenographic cephalometrics; physical anthropology; sex determination; skull

Document Type: Research Article

Affiliations: UFR d’Odontologie, Université Claude Bernard Lyon 1, France.

Publication date: July 1, 2008

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