Biphasic finite element simulation of the TMJ disc from in vivo kinematic and geometric measurements.
Understanding the biomechanical nature of the degeneration of the temporomandibular joint requires a coupling between experimental measurements and numerical simulation. In this study, geometry measured from MRI, and motion obtained from a specially designed optoelectronic system are fed into a three-dimensional biphasic finite element analysis to generate the spatial and temporal mechanical response of the disc. This study demonstrates how this coupling can effectively predict the biomechanical response of the temporomandibular joint disc to physiological loading. For small jaw opening movements, asymmetries in the load of the disc are found, with especially higher shear stresses in the lateral portion.
Donzelli
Peter S
PS
Department of Biomedical Engineering and Scientific Computation Research Center, JEC 7049, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA.
Gallo
Luigi M
LM
Spilker
Robert L
RL
Palla
Sandro
S
D001696:Biomechanical Phenomena; D005260:Female; D020342:Finite Element Analysis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008954:Models, Biological; D019224:Temporomandibular Joint Disc / Q000033:anatomy & histology*