Metric Sexual Dimorphism in Permanent Canines

The degree of sexual dimorphism of permanent human canines in cervical buccolingual and mesiodistal diameters was investigated through discriminant analyses. Measurements were recorded in 254 canines from 85 individuals in four populations and sex was estimated with multifactorial morphological meth...

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Main Author: Johanna Morgan
Format: Article
Language:English
Published: International Association for Paleodontology 2011-06-01
Series:Bulletin of the International Association for Paleodontology
Subjects:
Online Access:http://www.paleodontology.com/fileadmin/user_upload/bulletin/bulletin_11-1/Morgan_IAPO_Bulletin_11-1.pdf
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author Johanna Morgan
author_facet Johanna Morgan
author_sort Johanna Morgan
collection DOAJ
description The degree of sexual dimorphism of permanent human canines in cervical buccolingual and mesiodistal diameters was investigated through discriminant analyses. Measurements were recorded in 254 canines from 85 individuals in four populations and sex was estimated with multifactorial morphological methods. Age was similar assessed in order to rule it out as a factor. Tooth and body size were controlled for in three of the populations (56 individuals) by the greatest buccolingual diameter of the right first molar of the corresponding jaw and the coronal diameter of the right femoral head, respectively. Age and tooth and body size were statistically insignificant factor2s (p > 0.05). Inter-observer error varied from 0.04 to 0.17 mm or 0.7-3.0% and was largely insignificant. Student’s t-tests found jaw was significant (p<0.05) but side was not (p>0.05) so measurements for both sides were averaged to increase the sample size. Sexual dimorphism was statistically insignificant for all four diameters individually or grouped with the exception of mandibular buccolingual width. Accuracy values ranged from 49-73% which, adjusted for a generous error margin from sexing techniques, became 39-58%. These results indicate that the landmarks, assemblages, or both do not exhibit significant sexual dimorphism. Future work should consider similar populations with different landmarks and/or the same landmarks on a different assemblage, preferably one of known sex.
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spelling doaj.art-d942e3df173d4c72845084baf34ac4a02022-12-21T18:14:35ZengInternational Association for PaleodontologyBulletin of the International Association for Paleodontology1846-62732011-06-0151412Metric Sexual Dimorphism in Permanent CaninesJohanna MorganThe degree of sexual dimorphism of permanent human canines in cervical buccolingual and mesiodistal diameters was investigated through discriminant analyses. Measurements were recorded in 254 canines from 85 individuals in four populations and sex was estimated with multifactorial morphological methods. Age was similar assessed in order to rule it out as a factor. Tooth and body size were controlled for in three of the populations (56 individuals) by the greatest buccolingual diameter of the right first molar of the corresponding jaw and the coronal diameter of the right femoral head, respectively. Age and tooth and body size were statistically insignificant factor2s (p > 0.05). Inter-observer error varied from 0.04 to 0.17 mm or 0.7-3.0% and was largely insignificant. Student’s t-tests found jaw was significant (p<0.05) but side was not (p>0.05) so measurements for both sides were averaged to increase the sample size. Sexual dimorphism was statistically insignificant for all four diameters individually or grouped with the exception of mandibular buccolingual width. Accuracy values ranged from 49-73% which, adjusted for a generous error margin from sexing techniques, became 39-58%. These results indicate that the landmarks, assemblages, or both do not exhibit significant sexual dimorphism. Future work should consider similar populations with different landmarks and/or the same landmarks on a different assemblage, preferably one of known sex.http://www.paleodontology.com/fileadmin/user_upload/bulletin/bulletin_11-1/Morgan_IAPO_Bulletin_11-1.pdfSexual DimorphismSex EstimationOdontometricsDental MorphologyDental Anthropology
spellingShingle Johanna Morgan
Metric Sexual Dimorphism in Permanent Canines
Bulletin of the International Association for Paleodontology
Sexual Dimorphism
Sex Estimation
Odontometrics
Dental Morphology
Dental Anthropology
title Metric Sexual Dimorphism in Permanent Canines
title_full Metric Sexual Dimorphism in Permanent Canines
title_fullStr Metric Sexual Dimorphism in Permanent Canines
title_full_unstemmed Metric Sexual Dimorphism in Permanent Canines
title_short Metric Sexual Dimorphism in Permanent Canines
title_sort metric sexual dimorphism in permanent canines
topic Sexual Dimorphism
Sex Estimation
Odontometrics
Dental Morphology
Dental Anthropology
url http://www.paleodontology.com/fileadmin/user_upload/bulletin/bulletin_11-1/Morgan_IAPO_Bulletin_11-1.pdf
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