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Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification

The occlusal morphology of the teeth is mostly determined by the enamel-dentine junction morphology; the enamel-dentine junction plays the role of a primer and conditions the formation of the occlusal enamel reliefs. However, the accretion of the enamel cap yields thickness variations that alter the...

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Autores principales: Guy, Franck, Gouvard, Florent, Boistel, Renaud, Euriat, Adelaïde, Lazzari, Vincent
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3691165/
https://www.ncbi.nlm.nih.gov/pubmed/23826088
http://dx.doi.org/10.1371/journal.pone.0066142
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author Guy, Franck
Gouvard, Florent
Boistel, Renaud
Euriat, Adelaïde
Lazzari, Vincent
author_facet Guy, Franck
Gouvard, Florent
Boistel, Renaud
Euriat, Adelaïde
Lazzari, Vincent
author_sort Guy, Franck
collection PubMed
description The occlusal morphology of the teeth is mostly determined by the enamel-dentine junction morphology; the enamel-dentine junction plays the role of a primer and conditions the formation of the occlusal enamel reliefs. However, the accretion of the enamel cap yields thickness variations that alter the morphology and the topography of the enamel–dentine junction (i.e., the differential deposition of enamel by the ameloblasts create an external surface that does not necessarily perfectly parallel the enamel–dentine junction). This self-reliant influence of the enamel on tooth morphology is poorly understood and still under-investigated. Studies considering the relationship between enamel and dentine morphologies are rare, and none of them tackled this relationship in a quantitative way. Major limitations arose from: (1) the difficulties to characterize the tooth morphology in its comprehensive tridimensional aspect and (2) practical issues in relating enamel and enamel–dentine junction quantitative traits. We present new aspects of form representation based exclusively on 3D analytical tools and procedures. Our method is applied to a set of 21 unworn upper second molars belonging to eight extant anthropoid genera. Using geometrical analysis of polygonal meshes representatives of the tooth form, we propose a 3D dataset that constitutes a detailed characterization of the enamel and of the enamel–dentine junction morphologies. Also, for the first time, to our knowledge, we intend to establish a quantitative method for comparing enamel and enamel–dentine junction surfaces descriptors (elevation, inclination, orientation, etc.). New indices that allow characterizing the occlusal morphology are proposed and discussed. In this note, we present technical aspects of our method with the example of anthropoid molars. First results show notable individual variations and taxonomic heterogeneities for the selected topographic parameters and for the pattern and strength of association between enamel–dentine junction and enamel, the enamel cap altering in different ways the “transcription” of the enamel–dentine junction morphology.
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spelling pubmed-36911652013-07-03 Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification Guy, Franck Gouvard, Florent Boistel, Renaud Euriat, Adelaïde Lazzari, Vincent PLoS One Research Article The occlusal morphology of the teeth is mostly determined by the enamel-dentine junction morphology; the enamel-dentine junction plays the role of a primer and conditions the formation of the occlusal enamel reliefs. However, the accretion of the enamel cap yields thickness variations that alter the morphology and the topography of the enamel–dentine junction (i.e., the differential deposition of enamel by the ameloblasts create an external surface that does not necessarily perfectly parallel the enamel–dentine junction). This self-reliant influence of the enamel on tooth morphology is poorly understood and still under-investigated. Studies considering the relationship between enamel and dentine morphologies are rare, and none of them tackled this relationship in a quantitative way. Major limitations arose from: (1) the difficulties to characterize the tooth morphology in its comprehensive tridimensional aspect and (2) practical issues in relating enamel and enamel–dentine junction quantitative traits. We present new aspects of form representation based exclusively on 3D analytical tools and procedures. Our method is applied to a set of 21 unworn upper second molars belonging to eight extant anthropoid genera. Using geometrical analysis of polygonal meshes representatives of the tooth form, we propose a 3D dataset that constitutes a detailed characterization of the enamel and of the enamel–dentine junction morphologies. Also, for the first time, to our knowledge, we intend to establish a quantitative method for comparing enamel and enamel–dentine junction surfaces descriptors (elevation, inclination, orientation, etc.). New indices that allow characterizing the occlusal morphology are proposed and discussed. In this note, we present technical aspects of our method with the example of anthropoid molars. First results show notable individual variations and taxonomic heterogeneities for the selected topographic parameters and for the pattern and strength of association between enamel–dentine junction and enamel, the enamel cap altering in different ways the “transcription” of the enamel–dentine junction morphology. Public Library of Science 2013-06-24 /pmc/articles/PMC3691165/ /pubmed/23826088 http://dx.doi.org/10.1371/journal.pone.0066142 Text en © 2013 Guy et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Guy, Franck
Gouvard, Florent
Boistel, Renaud
Euriat, Adelaïde
Lazzari, Vincent
Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification
title Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification
title_full Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification
title_fullStr Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification
title_full_unstemmed Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification
title_short Prospective in (Primate) Dental Analysis through Tooth 3D Topographical Quantification
title_sort prospective in (primate) dental analysis through tooth 3d topographical quantification
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3691165/
https://www.ncbi.nlm.nih.gov/pubmed/23826088
http://dx.doi.org/10.1371/journal.pone.0066142
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