Developmental defects of the dental crown in chimpanzees from the Tai National Park, Cote D'ivoire: Coronal waisting

Skinner, Mark F. and Skinner, Matthew M. and Boesch, Christophe (2012) Developmental defects of the dental crown in chimpanzees from the Tai National Park, Cote D'ivoire: Coronal waisting. American Journal of Physical Anthropology, 149 (2). pp. 272-282. ISSN 0002-9483. (doi:https://doi.org/10.1002/ajpa.22123) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1002/ajpa.22123

Abstract

We describe a developmental defect that manifests as a mild constricted “waist” in anterior teeth from seven of nine chimpanzee individuals from Taï National Park, Côte D'Ivoire. The sample consists of 21 canine teeth and one incisor, imaged in profile with a digital microscope. Twelve teeth are affected. The waist develops during tooth formation as an external, encircling depression in the contour of the outer enamel surface, more easily seen labially. It is not a thinning of enamel per se, but rather a slight decrement in dentinal crown volume, shown in microCT scans as a change in contour of the enamel-dentin junction, spanning between 3 and 6 years of age, varying among individuals, with maximum expression at about age 4.3 years. The timing and duration of coronal waisting are consistent with descriptions of the weaning process at Taï and other chimpanzee study sites. We propose that coronal waisting records variation in the individual infant chimpanzee's physiological experiences during the process of attaining independence, increased foraging efficiency, and lactational weaning.

Item Type: Article
Uncontrolled keywords: Pan troglodytes verus;weaning process;dentin;stress;infancy
Subjects: Q Science
Divisions: Faculties > Social Sciences > School of Anthropology and Conservation > Biological Anthropology
Depositing User: Matthew Skinner
Date Deposited: 15 May 2015 12:29 UTC
Last Modified: 18 May 2015 09:13 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/48500 (The current URI for this page, for reference purposes)
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