Sex estimation using diagonal diameter measurements of molar teeth in African American populations |
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| Affiliation: | 1. Forensic Sciences Program, Department of Anthropology, Saint Mary''s University, 923 Robie Street, Halifax, Nova Scotia B3H 3C3, Canada;2. Department of Biology, Saint Mary''s University, Halifax, Nova Scotia B3H 3C3, Canada;3. Department of Anthropology, Saint Mary''s University, Halifax, Nova Scotia B3H 3C3, Canada;1. AgEstimation Project, Institute of Legal Medicine, University of Macerata, Macerata, Italy;2. School of Science and Technology, University of Camerino, Camerino, Italy;3. Institute of Legal Medicine, University of Macerata, Macerata, Italy;1. Department of Oral Diagnosis and Radiology, Forensic Odontology Unit, Dental School, University of Athens, 2 Thivon Street, Athens 11527, Greece;2. Department of Forensic Medicine and Toxicology, School of Medicine, University of Athens, 75 M. Asias Street, Athens 11527, Greece;3. Private practitioner, 120 Alexandras Avenue, Athens 11471, Greece;1. Graduate Student, Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea;2. Associate Professor, Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea;3. Professor and Chairman, Department of Orthodontics, 2nd Stage of Brain Korea 21, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea;1. Department of Psychological Science, University of Arkansas, United States;2. University of Texas A&M-San Antonio, United States;3. University of Central Lancashire, United Kingdom;4. Boston Police Department, United States |
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| Abstract: | Teeth are often recovered in forensic cases due to their postmortem longevity. The goal of the present research was to investigate the degree of sexual dimorphism in the permanent molars of African Americans using crown and cervical diagonal diameters. Discriminant functions developed from a modern Greek population were tested for accuracy of sex estimation in an African American population. One hundred and three (53 males and 50 females) individuals ranging in age from 16 years to 66 years old were used from the Robert J. Terry Anatomical Skeletal Collection. Four diagonal diameter measurements were taken for each of the left mandibular and maxillary molars: mesiobuccal-distolingual crown diameter, mesiolingual-distobuccal crown diameter, mesiobuccal-distolingual cervical diameter, and mesiolingual-distobuccal cervical diameter. The overall percentage of accuracy of the modern Greek discriminant functions when applied to the African American sample was between 53.8% and 63.6%. Males were more accurately classified (93.6%–100%) than females (0%–18.2%). The African American population specific direct discriminant functions showed accuracy rates from 72.6% to 100% for the original data and 40%–72.3% for the cross-validated data. The African American stepwise discriminant functions showed accuracy rates from 63.9% to 77.6% for the original and cross-validated data. Comparisons to other populations were made. The results suggest that, in teeth, there is variation in the degree of sexual dimorphism between populations and discriminant functions for sex estimation in dentition are population specific. |
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| Keywords: | Forensic anthropology population data Sex estimation Diagonal diameters Molar teeth Discriminant functions African Americans |
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