抄録
The influence due to variations in the elastic properties of constituent materials on stress distribution was evaluated using the Finite Element Method. These studies confirmed the viability of using a truss model to simulate the characteristics of the metal part of the Artificial Dental Root.With this truss model, the influence of Young's modulus for bone on stress distribution was evaluated. Variations in the cancellous bone elastic properties ranging from 50 kg/mm2 to 300 kg/mm2 did not affect the stress distribution. With cortical bone elastic properties ranging from 1000 kg/mm2 to 3000 kg/mm2, no significant change was observed.
Versions of the ADR model were built in which the dentin portion was composed of aluminum oxide, titanium, hydroxyapatite, and autogeneous dentin. Under axial loading, the distribution of stress in these models was also evaluated. As for the material constituting the dentin portion of the ADR, autogenous dentin and hydroxyapatite were shown to be biomechanically optimal.
