The influence of age, sex, population group, and dentition on the mandibular angle as measured on a South African sample
Identifieur interne : 003301 ( Istex/Curation ); précédent : 003300; suivant : 003302The influence of age, sex, population group, and dentition on the mandibular angle as measured on a South African sample
Auteurs : Anna C. Oettlé [Afrique du Sud] ; Piet J. Becker [Afrique du Sud] ; Elzabe De Villiers [Afrique du Sud] ; Maryna Steyn [Afrique du Sud]Source :
- American Journal of Physical Anthropology [ 0002-9483 ] ; 2009-08.
English descriptors
- KwdEn :
- African whites, American journal, Black females, Black males, Dent, Dentition, Dentition groups, Gonial, Gonial angle, Human mandible, Iscan, Main effects, Mandible, Mandibular, Mandibular angle, Masticatory muscles, Molar, Molar teeth, Phys anthropol, Physical anthropology, Population group, Population group differences, Population groups, Pretoria, Pretoria bone collection, Sexual dimorphism, Steyn, Subgroup, Time period, Tooth loss, Uneven distribution, White females, White males.
- Teeft :
- African whites, American journal, Black females, Black males, Dent, Dentition, Dentition groups, Gonial, Gonial angle, Human mandible, Iscan, Main effects, Mandible, Mandibular, Mandibular angle, Masticatory muscles, Molar, Molar teeth, Phys anthropol, Physical anthropology, Population group, Population group differences, Population groups, Pretoria, Pretoria bone collection, Sexual dimorphism, Steyn, Subgroup, Time period, Tooth loss, Uneven distribution, White females, White males.
Abstract
The mandibular angle is measured in physical anthropological assessments of human remains to possibly assist with the determination of sex and population affinity. The purpose of this investigation was to establish how the mandibular angle changes with age and loss of teeth among the sexes in South African population groups. The angles of 653 dried adult mandibles from the Pretoria Bone Collection were measured with a mandibulometer. Males and females of both South African whites and blacks were included. To compensate for imbalances in numbers among subgroups, type IV ANOVA testing was applied. No association was found between age and angle within either of the populations, within sexes, or within dentition groups. The angle was the most obtuse in individuals without molars and with an uneven distribution of molars, and most acute in the group with an even distribution of molars on both sides. Statistically significant differences (P < 0.001) were found in the angle between the two population groups and sexes in the overall sample as well as in the subgroup with absent molar teeth (P = 0.003 for sex, males more acute angle, and P = 0.001 for population group, blacks more acute angle), although a very large overlap existed. No significant differences could be demonstrated between the sexes or populations within the subgroups with molars. We concluded that the loss of molars, especially if complete or uneven, has a considerable effect on the mandibular angle. In the assessment of human remains, the mandibular angle is not very usable in determining sex. Am J Phys Anthropol, 2009. © 2009 Wiley‐Liss, Inc.
Url:
DOI: 10.1002/ajpa.21009
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The purpose of this investigation was to establish how the mandibular angle changes with age and loss of teeth among the sexes in South African population groups. The angles of 653 dried adult mandibles from the Pretoria Bone Collection were measured with a mandibulometer. Males and females of both South African whites and blacks were included. To compensate for imbalances in numbers among subgroups, type IV ANOVA testing was applied. No association was found between age and angle within either of the populations, within sexes, or within dentition groups. The angle was the most obtuse in individuals without molars and with an uneven distribution of molars, and most acute in the group with an even distribution of molars on both sides. Statistically significant differences (P < 0.001) were found in the angle between the two population groups and sexes in the overall sample as well as in the subgroup with absent molar teeth (P = 0.003 for sex, males more acute angle, and P = 0.001 for population group, blacks more acute angle), although a very large overlap existed. No significant differences could be demonstrated between the sexes or populations within the subgroups with molars. We concluded that the loss of molars, especially if complete or uneven, has a considerable effect on the mandibular angle. In the assessment of human remains, the mandibular angle is not very usable in determining sex. Am J Phys Anthropol, 2009. © 2009 Wiley‐Liss, Inc.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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