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Sex Discrimination Potential of Buccolingual and Mesiodistal Tooth Dimensions

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Abstract: 

Tooth crown dimensions are reasonably accurate predictors of sex and are useful adjuncts in sex assessment. This study explores the utility of buccolingual (BL) and mesiodistal (MD) measurements in sex differentiation when used independently. BL and MD measurements of 28 teeth (third molars excluded) were obtained from a group of 53 Nepalese subjects (22 women and 31 men) aged 19–28 years. Stepwise discriminant analyses were undertaken separately for both types of tooth crown variables and their accuracy in sex classification compared with one another. MD dimensions had recognizably greater accuracy (77.4–83%) in sex identification than BL measurements (62.3–64.2%)—results that are consistent with previous reports. However, the accuracy of MD variables is not high enough to warrant their exclusive use in odontometric sex assessment—higher accuracy levels have been obtained when both types of dimensions were used concurrently, implying that BL variables contribute to sex assessment to some extent. Hence, it is inferred that optimal results in dental sex assessment are obtained when both MD and BL variables are used together.
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Keywords: dental anthropology; forensic science; linear tooth measurements; odontometrics; sex determination; stepwise discriminant analysis

Document Type: Research Article

Affiliations: 1: Department of Forensic Odontology, S.D.M. College of Dental Sciences and Hospital, Dharwad 580009, India. 2: College of Dental Surgery, B.P. Koirala Institute of Health Sciences, Dharan, Nepal.

Publication date: July 1, 2008

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