|Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Two-dimensional simulation models of three-unit bridges were constructed, and stress distribution around the abutment teeth and alveolar bone was analysed and the fringe orders were recorded. Metal Core and composite resin core including a fiber post (core materials) and zirconium oxide (bridge material) were selected. Materials of this model were chosen so that it might become the same as the ratio of Young's modulus of alveolar bone, dental root, metal core, Fiber post, and composite resin. Moreover, it was necessary to search a material with the Young's modulus at the same level as an alveolar bone model, the ratio of the matrix of the epoxy resin, the hardener, and the softener was changed and measured the Young's modulus of mixtures.
As a result, stress distribution of the abutment tooth with metal core and resin core including a fiber-post was different at cervical area of the root and apical area of the alveolar bone.