The three dimensional finite element analysis of the stress distribution according to the implant and thread designs

ABSTRACT

biologic load to disperse the load adequately to the surrounding bone. In this study, based upon the implant and thread designs, we have assessed the equivalent stress and equivalent strain in the cortical and cancellous bone with finite element analysis when under 100N vertical force and 20N horizontal force were simultaneously loaded on the following 6 different kinds of implant design and 4 different kinds of thread design. According to the results, the cylinder type or cylinder and tapered type is the most favorable design in the same diameter. To supplement the shortcoming of the tapered type and stepped cylinder type in the respect of design and project area, it is better to increase the diameter of the implants. The square and reverse threads are better than triangular and plateau thread in the respect of maximum equivalent stress and strain in the cortical and cancellous bone and project area.