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RESEARCH PAPERS

A Finite Element Analysis of the Human Temporomandibular Joint

[+] Author and Article Information
J. Chen

Department of Mechanical Engineering, Purdue University at Indianapolis, Department of Oral Facial Development, School of Dentistry, Indiana University Biomechanics and Biomaterial Research Center, Indianapolis, IN 46202

Liangfeng Xu

Department of Mechanical Engineering, Purdue University at Indianapolis, Indianapolis, IN 56202-5132

J Biomech Eng 116(4), 401-407 (Nov 01, 1994) (7 pages) doi:10.1115/1.2895790 History: Received June 04, 1993; Revised November 19, 1993; Online March 17, 2008

Abstract

A 2-D finite element model of the human temporomandibular joint (TMJ) has been developed to investigate the stresses and reaction forces within the joint during normal sagittal jaw closure. The mechanical parameters analyzed were maximum principal and von Mises stresses in the disk, the contact stresses on the condylar and temporal surfaces, and the condylar reactions. The model bypassed the complexity of estimating muscle forces by using measured joint motion as input. The model was evaluated by several tests. The results demonstrated that the resultant condylar reaction force was directed toward the posterior side of the eminence. The contact stresses along the condylar and temporal surfaces were not evenly distributed. Separations were found at both upper and lower boundaries. High tensile stresses were found at the upper boundaries. High tensile stresses were found at the upper boundary of the middle portion of the disk.

Copyright © 1994 by The American Society of Mechanical Engineers
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