Abstract
Clenching is one of normal activities of skull and teeth. This study aims to assess loading and boundary conditions to simulate clenching of teeth using finite element (FE) skull model. Muscular system for clenching is replaced by loading and restraint prescriptions of FE skull model in this study. Parametric studies are performed by adjusting loading and boundary conditions, respectively. Von Mises stress distribution of skull and bite force-mandibular movement curve are obtained, and each case is compared. The loading conditions, such as loading points, location and direction, and boundary conditions, such as fixed location and area, affect structural and mechanical behaviors of skull in clenching simulation. We determined that the most reasonable case for the simulation is Mm_Ml; skull model is fixed around foramen magnum and mandible part is moved by considering driving direction of masseter. To evaluate loading and boundary conditions for clenching simulation with high reasonability, it is important to predict behaviors of skull and teeth from structural and mechanical viewpoints as much as clinical perspective.
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