Number of Teeth Is Related to Craniofacial Morphology in Humans.

Oeschger, Elias S; Kanavakis, Georgios; Cocos, Alina; Halazonetis, Demetrios J; Gkantidis, Nikolaos (2022). Number of Teeth Is Related to Craniofacial Morphology in Humans. Biology, 11(4) MDPI 10.3390/biology11040544

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One of the most common dental anomalies in humans is the congenital absence of teeth, referred to as tooth agenesis. The association of tooth agenesis to craniofacial morphology has been previously investigated but remains unclear. We investigated this association by applying geometric morphometric methods in a large sample of modern humans. In line with previous studies, we report here that a reduced teeth number is linked to a less convex profile, as well as to a shorter face. The effects were similar for males and females; they increased as the severity of the tooth agenesis increased and remained unaltered by the inclusion of third molars and of allometry in the analysis. Furthermore, in cases with tooth agenesis only in the maxilla, there was no detectable effect in mandibular shape, whereas maxillary shape was affected independently of the location of missing teeth. The robustness of the present sample along with the shape analysis and the statistical approach applied, allowed for thorough testing of various contributing factors regarding the presence but also the magnitude of effects. The present findings suggest a relationship between number of teeth and overall craniofacial development and have evolutionary implications.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics

UniBE Contributor:

Oeschger, Elias Sebastian and Gkantidis, Nikolaos

Subjects:

600 Technology > 610 Medicine & health

ISSN:

2079-7737

Publisher:

MDPI

Language:

English

Submitter:

Pubmed Import

Date Deposited:

26 Apr 2022 12:21

Last Modified:

26 Apr 2022 12:29

Publisher DOI:

10.3390/biology11040544

PubMed ID:

35453743

Uncontrolled Keywords:

growth/development hypodontia morphogenesis morphometrics oligodontia tooth agenesis tooth development

BORIS DOI:

10.48350/169495

URI:

https://boris.unibe.ch/id/eprint/169495

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