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7 - Sex determination from maxillary and mandibular canines of the Filipino population

Published online by Cambridge University Press:  05 May 2013

R J Taduran
Affiliation:
University of the Philippines, Philippines
Grant Townsend
Affiliation:
University of Adelaide
Eisaku Kanazawa
Affiliation:
Nihon University, Japan
Hiroshi Takayama
Affiliation:
Keio University, Japan
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Summary

ABSTRACT

The aim of this study was to derive Filipino-specific formulae that can be used as supplementary tools for sex discrimination, especially in forensic cases. Three dimensions — clinical crown height (CCH), maximum mesiodistal breadth (MMD) and maximum buccolingual width (MBL) — of the maxillary and mandibular canines were measured in 100 male and 100 female Filipino participants. CCH emerged as the most significant variable in determining sex in maxillary canines while CCH and MMD were both statistically significant in mandibular canine sex determination. Tree models were derived and 39 data sets were analysed as a test of accuracy. The accuracy ratings for the maxillary and mandibular trees were 56.41% and 74.36%, respectively. The mandibular tree is recommended for use in cases with incomplete or fragmented human remains when no other skeletal elements yielding higher accuracy estimates are available. The results of this study contradict the previous claim of no significant dimorphism in the dentition of the Filipino population.

INTRODUCTION

Sexual dimorphism has always been an interesting issue in primate and human evolution and the canine teeth are some of the most studied and debated elements. Researchers (Almquist, 1974; Crook, 1972; Clutton-Brock and Harvey, 1977; Greenfield, 1992; Guatelli-Steinberg, 2009; Harvey et al., 1978; Kay et al., 1988; Leutenegger, 1982; Leutenegger and Cheverud, 1985; Leutenegger and Kelly, 1977; Lucas et al., 1986; Oxnard et al., 1985; Plavcan, 2001, 2004; Plavcan and Ruff, 2008; Plavcan and van Schaik, 1992, 1994; Royer et al., 2009) have already shown that canine teeth exhibit sexual dimorphism and are one of the most obvious secondary sex differences among non-human primates.

Type
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New Directions in Dental Anthropology
Paradigms, Methodologies and Outcomes
, pp. 81 - 91
Publisher: The University of Adelaide Press
Print publication year: 2012

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