In order to evaluate the effect of titanium diameter on reinforcement of titaniumhydroxyapatite implant and calculate the diameter of the implant under loading, stress analysis was performed using the finite element method. In finite element model, 100% or 70% of root length was supported by PMMA in place of bone and the implant was loaded 15 kgf at 45° of the implant axis.
The results were obtained as follows,
1. In the case of 100% support, the titanium diameter had little effect on the reinforcement of the implant, whereas in the case of 70% support, it had much effect.
2. The diameter of this implant was calculated to be more than 3.7mm under loading.
From these results and the view point of manufacturing techniques, the diameter of this implant was supposed to need 4.0mm and that of titanium was to be 2.0mm.
