The Royal Society
Browse

Supplementary material from "Comparative biomechanics of the Pan and Macaca mandibles during mastication: finite-element modelling of loading, deformation and strain regimes"

Posted on 2021-07-24 - 06:29
The mechanical behaviour of the mandibles of Pan and Macaca during mastication was compared using finite-element modelling. Muscle forces were calculated using species-specific measures of physiological cross-sectional area and scaled using electromyographic estimates of muscle recruitment in Macaca. Loading regimes were compared using moments acting on the mandible and strain regimes were qualitatively compared using maps of principal, shear and axial strains. The enlarged and more vertically oriented temporalis and superficial masseter muscles of Pan result in larger sagittal and transverse bending moments on both working- and balancing-sides, and larger anteroposterior twisting moments on the working-side. The mandible of Pan experiences higher principal strain magnitudes in the ramus and mandibular prominence, higher transverse shear strains in the top of the symphyseal region and working-side corpus, and a predominance of sagittal bending-related strains in the balancing-side mandible. This study lays the foundation for a broader comparative study of Hominidae mandibular mechanics in extant and fossil hominids using finite-element modelling. Pan's larger and more vertical masseter and temporalis may make it a more suitable model for hominid mandibular biomechanics than Macaca.

CITE THIS COLLECTION

DataCite
3 Biotech
3D Printing in Medicine
3D Research
3D-Printed Materials and Systems
4OR
AAPG Bulletin
AAPS Open
AAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)
Academic Medicine
Academic Pediatrics
Academic Psychiatry
Academic Questions
Academy of Management Discoveries
Academy of Management Journal
Academy of Management Learning and Education
Academy of Management Perspectives
Academy of Management Proceedings
Academy of Management Review
or
Select your citation style and then place your mouse over the citation text to select it.

SHARE

email

Usage metrics

Interface Focus

AUTHORS (9)

Amanda L. Smith
Chris Robinson
Andrea B. Taylor
Olga Panagiotopoulou
Julian Davis
Carol V. Ward
William H. Kimbel
Zeresenay Alemseged
Callum F. Ross

CATEGORIES

need help?