Is the deciduous/permanent molar enamel thickness ratio a taxon-specific indicator in extant and extinct hominids?

Zanolli, Clément and Bayle, Priscilla and Bondioli, Luca and Dean, Christopher and Le Luyer, Mona and Mazurier, Arnaud and Morita, Wataru and Macchiarelli, Roberto (2017) Is the deciduous/permanent molar enamel thickness ratio a taxon-specific indicator in extant and extinct hominids? Comptes Rendus Palevol, 16 (5-6). pp. 702-714. ISSN 1631-0683. (doi:https://doi.org/10.1016/j.crpv.2017.05.002) (Full text available)

Abstract

In Primates, enamel thickness variation stems from an evolutionary interplay between functional/adaptive constraints (ecology) and the strict control mechanisms of the morphogenetic program. Most studies on primate enamel thickness have primarily considered the permanent teeth, while the extent of covariation in tooth enamel thickness distribution between deciduous and permanent counterparts remains poorly investigated. In this test study on nine extant and fossil hominids we investigated the degree of covariation in enamel proportions between 25 pairs of mandibular dm2 and M1 by a so-called “lateral enamel thickness diphyodontic index”. The results did not provide an unambiguous picture, but rather suggest complex patterns likely resulting from the influence of many interactive factors. Future research should test the congruence of the “diphyodontic signal” between the anterior and the postcanine dentition, as well as between enamel and the enamel-dentine junction topography.

Item Type:	Article
Uncontrolled keywords:	Enamel; Dm2; M1; “Diphyodontic index”; Hominids
Divisions:	Faculties > Social Sciences > School of Anthropology and Conservation Faculties > Social Sciences > School of Anthropology and Conservation > Biological Anthropology
Depositing User:	M. Le-Luyer
Date Deposited:	27 Jun 2017 09:52 UTC
Last Modified:	29 Aug 2017 14:20 UTC
Resource URI:	https://kar.kent.ac.uk/id/eprint/62148 (The current URI for this page, for reference purposes)
Le Luyer, Mona:	https://orcid.org/0000-0001-7999-0294