Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/357727
Type: Artigo
Title: Review of in vivo bone strain studies and finite element models of the Zygomatic Complex in humans and nonhuman primates: implications for clinical research and practice
Author: Prado, Felippe Bevilacqua
Freire, Alexandre Rodrigues
Rossi, Ana Claudia
Ledogar, Justin A.
Smith, Amanda L.
Dechow, Paul C.
Strait, David S.
Voigt, Tilman
Ross, Callum F.
Abstract: The craniofacial skeleton is often described in the clinical literature as being comprised of vertical bony pillars, which transmit forces from the toothrow to the neurocranium as axial compressive stresses, reinforced transversely by buttresses. Here, we review the literature on bony microarchitecture, in vivo bone strain, and finite-element modeling of the facial skeleton of humans and nonhuman primates to address questions regarding the structural and functional existence of facial pillars and buttresses. Available bone material properties data do not support the existence of pillars and buttresses in humans or Sapajus apella. Deformation regimes in the zygomatic complex emphasize bending and shear, therefore conceptualizing the zygomatic complex of humans or nonhuman primates as a pillar obscures its patterns of stress, strain, and deformation. Human fossil relatives and chimpanzees exhibit strain regimes corroborating the existence of a canine-frontal pillar, but the notion of a zygomatic pillar has no support. The emerging consensus on patterns of strain and deformation in finite element models (FEMs) of the human facial skeleton corroborates hypotheses in the clinical literature regarding zygomatic complex function, and provide new insights into patterns of failure of titanium and resorbable plates in experimental studies. It is suggested that the "pillar and buttress" model of human craniofacial skeleton function be replaced with FEMs that more accurately and precisely represent in vivo function, and which can serve as the basis for future research into implants used in restoration of occlusal function and fracture repair
Subject: Implantes dentários
Country: Estados Unidos
Editor: John Wiley & Sons
Rights: Fechado
Identifier DOI: 10.1002/ar.23486
Address: https://anatomypubs.onlinelibrary.wiley.com/doi/full/10.1002/ar.23486
Date Issue: 2016
Appears in Collections:FOP - Artigos e Outros Documentos

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