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ID 114281
Author
Barrientos, Eva University of Oviedo
Pelayo, Fernandez University of Oviedo
Lamela-Rey, María Jesús University of Oviedo
Fernández-Canteli, Alfonso University of Oviedo
Keywords
Temporomandibular joint
Soft tissues
Viscoelasticity
Biomechanical characterization
Experimental techniques
Shear
Content Type
Journal Article
Description
In this study, shear relaxation properties of the porcine temporomandibular joint (TMJ) disc are investigated. Previous studies have shown that, in fatigue failure and damage of cartilage and fibrocartilage, shear loads could be one of the biggest contributors to the failure. The aim of the present study is to develop an evaluation method to study shear properties of the disc and to do a mathematical characterization of it. For the experiments, twelve porcine discs were used. Each disc was dissected from the TMJ and, then, static strain control tests were carried out to obtain the shear relaxation modulus for the central region of the discs. From the results, it was found that the disc presents a viscoelastic behavior under shear loads. Relaxation modulus decreased with time. Shear relaxation was 10% of the instantaneous stress, which implies that the viscous properties of the disc cannot be neglected. The present results lead to a better understanding of the discs mechanical behavior under realistic TMJ working conditions.
Journal Title
Journal of Biomechanics
ISSN
00219290
NCID
AA00694200
AA11533269
Publisher
Elsevier
Volume
93
Start Page
126
End Page
131
Published Date
2019-07-02
Rights
© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
Author
departments
Oral Sciences