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Dimorphism in dental tissues: sex differences in archaeological individuals for multiple tooth types

Dimorphism in dental tissues: sex differences in archaeological individuals for multiple tooth types
Dimorphism in dental tissues: sex differences in archaeological individuals for multiple tooth types
Objectives
Dimorphism in the dentition has been observed in human populations worldwide. However, research has largely focused on traditional linear crown measurements. As imaging systems, such as micro‐computed tomography (micro‐CT), become increasingly more accessible, new dental measurements such as dental tissue size and proportions can be obtained. This research investigates the variation of dental tissues and proportions by sex in archaeological samples.

Materials and Methods
Upper and lower first incisor to second premolar tooth rows were obtained from 30 individuals (n = 300), from 3 archaeological samples. The teeth were micro‐CT scanned and surface area and volumetric measurements were obtained from the surface meshes extracted. Dental wear was also recorded and differences between sexes determined.

Results
Enamel and crown measurements were found to be larger in females. Conversely, dentine and root measurements were larger in males.

Discussion
The findings support the potential use of dental tissues to estimate sex of individuals from archaeological samples, while also indicating that individuals aged using current dental aging methods may be underaged or overaged due to sex differences in enamel thickness.
dentine, dimorphism, enamel, micro-CT, proportions
0002-9483
Fernee, Christianne
2f5dd641-8e20-45a9-9ca0-5cc48860474a
Zakrzewski, Sonia
d80afd94-feff-4fe8-96e9-f3db79bba99d
Brown, Kate Robson
75205491-6913-4dc2-8fce-e63cdb9a66c9
Fernee, Christianne
2f5dd641-8e20-45a9-9ca0-5cc48860474a
Zakrzewski, Sonia
d80afd94-feff-4fe8-96e9-f3db79bba99d
Brown, Kate Robson
75205491-6913-4dc2-8fce-e63cdb9a66c9

Fernee, Christianne, Zakrzewski, Sonia and Brown, Kate Robson (2020) Dimorphism in dental tissues: sex differences in archaeological individuals for multiple tooth types. American Journal of Physical Anthropology. (doi:10.1002/ajpa.24174).

Record type: Article

Abstract

Objectives
Dimorphism in the dentition has been observed in human populations worldwide. However, research has largely focused on traditional linear crown measurements. As imaging systems, such as micro‐computed tomography (micro‐CT), become increasingly more accessible, new dental measurements such as dental tissue size and proportions can be obtained. This research investigates the variation of dental tissues and proportions by sex in archaeological samples.

Materials and Methods
Upper and lower first incisor to second premolar tooth rows were obtained from 30 individuals (n = 300), from 3 archaeological samples. The teeth were micro‐CT scanned and surface area and volumetric measurements were obtained from the surface meshes extracted. Dental wear was also recorded and differences between sexes determined.

Results
Enamel and crown measurements were found to be larger in females. Conversely, dentine and root measurements were larger in males.

Discussion
The findings support the potential use of dental tissues to estimate sex of individuals from archaeological samples, while also indicating that individuals aged using current dental aging methods may be underaged or overaged due to sex differences in enamel thickness.

Text
AM Sexual_Dimorphism_in_Dental_Tissues_AJPA_Revisions - Accepted Manuscript
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More information

Accepted/In Press date: 4 November 2020
e-pub ahead of print date: 27 November 2020
Keywords: dentine, dimorphism, enamel, micro-CT, proportions

Identifiers

Local EPrints ID: 446063
URI: http://eprints.soton.ac.uk/id/eprint/446063
ISSN: 0002-9483
PURE UUID: d07443d5-bfc9-44ee-bbe8-75145d55784c
ORCID for Sonia Zakrzewski: ORCID iD orcid.org/0000-0003-1796-065X

Catalogue record

Date deposited: 20 Jan 2021 17:30
Last modified: 27 Nov 2021 05:01

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Contributors

Author: Christianne Fernee
Author: Kate Robson Brown

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