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1 Acta of Bioengineering and Biomechanics

1 2006

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Modelling of temporomandibular joint and FEM analysis

Fricova M., Horak Z., Konvickova S.

Acta of Bioengineering and Biomechanics

2006

Vol. 8, nr 1

37-45

The purpose of this paper is to develop a new complete replacement of the temporomandibular joint (TMJ). A three-dimensional finite element model of the temporomandibular joint has been developed according to the CT data. The model consists of a half skull, a half mandible and a temporomandibular joint disc. Stress analysis of TMJ during normal occlusion was carried out using non-linear finite element analysis (FEA). The model consists of 54 758 elements and 16 665 nodes. Material properties were obtained from previously published data and were considered to be isotropic and linear. Contact surfaces were defined between the temporomandibular disc and the mandibular condyle and between the temporomandibular disc and the fossa eminence on the skull. Between contact surfaces a finite sliding was allowed. Stresses in the TMJ components (disc, mandible condyle and the fossa eminence on the skull) were obtained. The results have shown stress distribution during normal occlusion.