Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

The FEM Analysis on the Crestal Cortical Bone around the Implant according to the Cancellous Bone Density and Loading Positions

임프란트 매식시 해면골질의 차이에 따른 치밀골 상 응력분석

  • Jeung, Sin-Young (Dept of Prosthodontics, College of Dentistry, Chosun University) ;
  • Kim, Chang-Hyun (Dept of Prosthodontics, College of Dentistry, Chosun University)
  • 정신영 (조선대학교 치과대학 보철학교실) ;
  • 김창현 (조선대학교 치과대학 보철학교실)
  • Published : 2007.03.30
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Abstract

This study was performed to compare the stress distribution pattern in the crestal cortical bone and cancellous bone using 3-dimensional finite element stress analysis when 2 different Young's modulus(high modulus, model 1; low modulus, model 2) of cancellous bone was assumed. For the analysis, a finite element model was designed to have two square-threaded implants fused together and located at first and second molar area. Stress distribution was observed when vertical load of 200N was applied at several points on the occlusal surfaces of the implants, including central fossa, points 1.5mm, 2mm, 3mm and 3.5mm buccally away from central fossa. The results were as follows; 1. In both model, the maximum Von-Mises stress in the crestal cortical bone was greater when the load was applied at the central point, points 1.5mm and 2mm buccally away from central fossa than other cases. 2. In the cortical bone around first and second molar, model 2 showed greater Von-Mises stress than model 1. It is concluded that when the occlusal contact is afforded, the distribution of stress varies depending on the density of cancellous bone and the location of loading. More favorable stress distribution is expected when the contact load is applied within the diameter of fixtures.

Keywords

References

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