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A geometric morphometric approach to the study of variation of shovel-shaped incisors
Carayon, Delphine1,2; Adhikari, Kaustubh3,4; Monsarrat, Paul5,6; Dumoncel, Jean1; Braga, Jose1,7,8; Duployer, Benjamin9; Delgado, Miguel10,11; Fuentes-Guajardo, Macarena3,4,12; de Beer, Frikkie13; Hoffman, Jakobus W.13
2019
Source PublicationAMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
ISSN0002-9483
Volume168Issue:1Pages:229-241
Abstract

Objectives The scoring and analysis of dental nonmetric traits are predominantly accomplished by using the Arizona State University Dental Anthropology System (ASUDAS), a standard protocol based on strict definitions and three-dimensional dental plaques. However, visual scoring, even when controlled by strict definitions of features, visual reference, and the experience of the observer, includes an unavoidable part of subjectivity. In this methodological contribution, we propose a new quantitative geometric morphometric approach to quickly and efficiently assess the variation of shoveling in modern human maxillary central incisors (UI1). Materials and methods We analyzed 87 modern human UI1s by means of virtual imaging and the ASU-UI1 dental plaque grades using geometric morphometrics by placing semilandmarks on the labial crown aspect. The modern human sample was composed of individuals from Europe, Africa, and Asia and included representatives of all seven grades defined by the ASUDAS method. Results Our results highlighted some limitations in the use of the current UI1 ASUDAS plaque, indicating that it did not necessarily represent an objective gradient of expression of a nonmetric tooth feature. Rating of shoveling tended to be more prone to intra- and interobserver bias for the highest grades. In addition, our analyses suggest that the observers were strongly influenced by the depth of the lingual crown aspect when assessing the shoveling. Discussion In this context, our results provide a reliable and reproducible framework reinforced by statistical results supporting the fact that open scale numerical measurements can complement the ASUDAS method.

KeywordASUDAS Procrustes and non-Procrustes superimpositions shovel-shape incisors virtual anthropology
DOI10.1002/ajpa.23709
Language英语
WOS KeywordNONMETRIC DENTAL TRAITS ; COMPUTED-TOMOGRAPHY ; ORIGINS ; TEETH ; MORPHOLOGY ; PATTERNS ; MODEL ; EDAR ; NEWS ; BONE
Funding ProjectToulouse Dental Faculty (PLTRO) ; Midi-Pyrenees Region ; Universite Toulouse III-Paul Sabatier ; Universite de Toulouse ; French CNRS ; Arizona State University ; CHU de Toulouse
WOS Research AreaAnthropology ; Evolutionary Biology
WOS SubjectAnthropology ; Evolutionary Biology
WOS IDWOS:000452242400018
Funding OrganizationToulouse Dental Faculty (PLTRO) ; Midi-Pyrenees Region ; Universite Toulouse III-Paul Sabatier ; Universite de Toulouse ; French CNRS ; Arizona State University ; CHU de Toulouse
PublisherWILEY
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/16197
Collection中国科学院南京地质古生物研究所
Corresponding AuthorCarayon, Delphine
Affiliation1.Univ Toulouse III Paul Sabatier, CNRS, UMR 5288, Toulouse, France
2.Univ Montpellier I, Fac Odontol, Montpellier, France
3.UCL, Dept Genet Evolut & Environm, London, England
4.UCL, UCL Genet Inst, London, England
5.Univ Toulouse III Paul Sabatier, Fac Odontol, Toulouse, France
6.Univ Toulouse III Paul Sabatier, CNRS, INSERM, EFS,INP ENVT,ERL 5311,STROMALab, Toulouse, France
7.Univ Witwatersrand, Evolutionary Studies Inst, Johannesburg, South Africa
8.Univ Witwatersrand, Sch Geosci, Johannesburg, South Africa
9.Univ Toulouse III Paul Sabatier, CNRS, Ctr Interuniv Rech & Ingn Mat, UMR 5085, Toulouse, France
10.Consejo Nacl Invest Cient & Tecn, Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina
Recommended Citation
GB/T 7714
Carayon, Delphine,Adhikari, Kaustubh,Monsarrat, Paul,et al. A geometric morphometric approach to the study of variation of shovel-shaped incisors[J]. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY,2019,168(1):229-241.
APA Carayon, Delphine.,Adhikari, Kaustubh.,Monsarrat, Paul.,Dumoncel, Jean.,Braga, Jose.,...&Zanolli, Clement.(2019).A geometric morphometric approach to the study of variation of shovel-shaped incisors.AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY,168(1),229-241.
MLA Carayon, Delphine,et al."A geometric morphometric approach to the study of variation of shovel-shaped incisors".AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 168.1(2019):229-241.
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