A three-dimensional computer model of the human mandible in two simulated standard trauma situations.

Purpose: A three-dimensional finite element model of the human mandible was developed to simulate and analyse biomechanical behaviour in two standard trauma situations. This computer-based study was made to assess the stress patterns within human mandibles generated by impact forces.

Material And Methods: The mandibular model was generated using 7.073 nodes and 30.119 tetrahedra. A commercial finite element solver was then applied to this mesh to compute stresses generated in standard trauma situations (a blow in the symphysis region and another one to the body of the mandible).

Results: The results indicate that following a blow to the symphysis region, maximum stress areas were located at the symphysis, retromolar and condylar regions. In the case of a blow to the mandibular body, the maximum stress areas were located at the contralateral angle, the ipsilateral body and the ipsilateral condylar neck regions.

Conclusion: The main application of this study was the prediction of fractures as a consequence of known forces.