Pages 7-8
Finite element analysis was performed on mandibular bone with distal extension removable partial denture (RPD) to assess the effects of RPD on stress distributions in mandibular bone. A finite element model was generated using X-ray CT data on the plaster model having the same morphology as the mandibular model, in which the mechanical properties of mandibular bone, natural teeth and RPD were assigned. In the analyses, a vertical loading was applied to the first molar to approximate occlusal loading of teeth. The analytical results showed the high stress concentrations in the distal and apical side around the first premolar. The present method should be effective for designing distal extension RPD.
