[Stress analysis of titanium-hydroxyapatite implant. Effect of titanium diameter on reinforcement and calculation of implant diameter].
In order to evaluate the effect of titanium diameter on reinforcement of titanium-hydroxyapatite 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 degrees 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 3.7 mm under loading. From these results and the view point of manufacturing techniques, the diameter of this implant was supposed to need 4.0 mm and that of titanium was to be 2.0 mm.
Katayama
T
T
The 1st Department of Prosthetic Dentistry, Osaka University Faculty of Dentistry.
Takuma
M
M
Morimoto
K
K
Nakamura
S
S
Takashima
F
F
Maruyama
T
T
D015921:Dental Implants; D003799:Dental Stress Analysis / Q000379:methods*; D003779:Denture Design; D006882:Hydroxyapatites; D014025:Titanium
D015921:Dental Implants; D006882:Hydroxyapatites; D014025:Titanium