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A study of force distribution of loading stresses on implant-bone interface on short implant length using
Ning Kang1, Yan-Yun Wu1, Ping Gong1
1Department of Implantology, West China School of Stomatology, Sichuan University, Chengdu 610041, China.
Objective:
The purpose of this study is to evaluate the biomechanics of short dental implants.
Study Design:
Three-dimensional finite element analysis was used to simulate stress distribution of 8-mm implants with 6 different diameters in I to IV types of bone densities; meanwhile, axial and oblique loads were applied in this study.
Results:
It was found that the maximum Von-Mises stress varied significantly when the diameter was within 3.3 mm and 5 mm, whereas the change of peak stress was not obvious when the diameter was within 5.5 mm to 7.1 mm. The peak stress on the implant-bone interface increased with the reduction of bone density. The stress in types I and II had similar distribution and the same was true for types III and IV.
Conclusions:
These results revealed that implants with larger diameter (<5.5 mm) and bone quality enhancement may be preferable to get better clinical effects. Prospective clinical studies are required to confirm this.
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