Abstract
Occlusal force distribution is considered to be one of the major factors for bone resorption underneath denture base. We developed the program for simulating this process utilizing a two dimensional finite element model and an optimization program. In this report, influence of rigidity of denture base, loading condition, rebase and reline and on bone resorption were examined and following results were obtained.1. Rigidity of the denture structure had much influence on bone resorption. Denture base with high rigidity caused less resorption compared to the one with low rigidity.2. Area and amount of bone resorption were closely related to the loading location and direction. Least amount of resorption was found when the load applied vertically at the palatal side.3. Rebase and reline procedure without altering occlusion could result in further resorption.
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