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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Dental developmental pattern of the Neanderthal child from Roc de Marsal: a high-resolution 3D analysis
Journal of Human Evolution, Volume 56, No. 1, Year 2009
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Description
The assessment of the degree of similarity or difference between Neanderthals and modern humans in their patterns of dental development remains a controversial matter. Here we report results from the microtomographic-based (SR-μCT) high-resolution structural investigation of the maxilla and mandible of the Neanderthal child from Roc de Marsal, Dordogne, France (likely from OIS 5a). Following their virtual extraction and 3D rendering, we assessed the maturational stage of each of the 41 dental elements (20 deciduous and 21 permanent) forming its mixed dentition. By using a Bayesian approach, we calculated the probability that its deciduous and permanent mandibular sequences are found within the extant human variation as illustrated by a tomographic CT-based sub-sample of 32 children (deciduous dentition) and a panoramic radiographic- and CT-based whole sample of 343 living children (permanent dentition). Results show that neither the deciduous nor the permanent mandibular sequences displayed by Roc de Marsal are precisely found within our modern comparative files. In both sequences, the most influential factor is represented by a slight discrepancy in the Neanderthal child between the stage of mineralization of the first molar, which is proportionally advanced, and the maturational level reached by its incisors, which are proportionally delayed. Following a quantitative volumetric analysis of the deciduous teeth, we suggest that this characteristic may be related to differences between Neanderthals and modern humans in absolute dental size and relative size proportions between front and cheek teeth, as well as to structural differences in dental tissue proportions. © 2008 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Bayle, Priscilla
Germany, Mettmann
Neanderthal Museum
France, Toulouse
Université Toulouse Iii - Paul Sabatier
Braga, José
France, Toulouse
Université Toulouse Iii - Paul Sabatier
Mazurier, Arnaud
France, Poitiers
Etudes Recherches Matériaux
Macchiarelli, Roberto M.
France, Paris
Cnrs Centre National de la Recherche Scientifique
France, Poitiers
Universite de Poitiers
Statistics
Citations: 70
Authors: 4
Affiliations: 5
Identifiers
Doi:
10.1016/j.jhevol.2008.09.002
ISSN:
00472484
Research Areas
Health System And Policy
Maternal And Child Health
Study Approach
Quantitative