J Korean Assoc Maxillofac Plast Reconstr Surg.  2004 Sep;26(5):443-452.

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

• Kim IK
• Ryu SH
• Kim JR
• Min DH
• Han YS
• Song KH
• Son CY
• Byun HI

Abstract

The design of the implant is developing in the direction of which the implant can sustain the impact of the intra-oral 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.

Keyword

Implant; Thread; Finite element analysis; Equivalent stress; Equivalent strain

MeSH Terms

Finite Element Analysis*