2761 粉末シート積層法によるチタン製骨再生多孔質体の特性評価(S39-2 新機能多孔質材料の創製と評価(2),S39 新機能多孔質材料の創製と評価)

抄録

For the purpose of making prosthetic implants, we have fabricated porous titanium with threedimensionally distributed micro and macro pores by using a combined method of lamination modeling and spark plasma sintering. Yield strength by compression is varied from 113 to 280MPa by changing the size of macro pores, but the specimen meets strength conditions for almost all teeth. A Young's modulus of 4.0GPa is nearly equal to that of actual teeth, whereas a bend strength of 30MPa is a little bit lower. Next, we have investigated bioactivation of the porous titanium fabricated by the lamination modeling with laser. Alkali and heat treatments are followed by soaking the specimen in simulated body fluid for two weeks. The formation of apatite was observed in the interior of pores as well as on the surface.