Assessing cranial plasticity in humans: The impact of artificial deformation on masticatory and basicranial structures |
| |
Authors: | Marion Cottin Roman Hossein Khonsari Martin Friess |
| |
Affiliation: | 1. UMR 7206, département “Homme et Environnement”, Muséum national d’histoire naturelle, Musée de l’Homme, 75016 Paris, France;2. Service de chirurgie maxillofaciale et stomatologie, Assistance publique–Hôpitaux de Paris, hôpital universitaire Pitié-Salpêtrière, université Pierre-et-Marie-Curie, 75013 Paris, France |
| |
Abstract: | Artificial cranial deformations (ACD) are a widespread cultural practice found in numerous historical and prehistoric contexts. Their study can yield valuable insight into craniofacial growth, specifically into the interactions between neurocranial and basicranial modules. This study seeks to reinvestigate the presumed effect of ACD on basicranial and masticatory elements by applying a 3D geometric morphometric approach to CT scans. A total of 51 French and Bolivian skulls, representing anteroposterior and circumferential deformations and including undeformed individuals, were scanned, and 3D landmarks were submitted to between-group principal components analysis and two-block partial least-squares analysis. Our results illustrate changes in basicranial shape and in cranial base angles induced by ACD, as well as in masticatory geometry, namely in the relative position of the mandibular fossae. Furthermore, our findings highlight differential effects of the various deformation types, which suggest that patterns of covariation between modified vaults and their associated basicrania are more complex than previously assumed, thereby stressing the degree of plasticity in human craniofacial growth. |
| |
Keywords: | Artificial cranial deformation Basicranial flexion Temporomandibular joint Covariation Geometric morphometrics Déformation crânienne artificielle Flexion basicrânienne Articulation temporomandibulaire Covariation Morphométrie géométrique |
本文献已被 ScienceDirect 等数据库收录! |
|