구강회복응용과학지 (Journal of Dental Rehabilitation and Applied Science)
- 제17권4호
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- Pages.307-314
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- 2001
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- 2384-4353(pISSN)
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- 2384-4272(eISSN)
적합도가 다른 임플랜트 지지 보철물의 삼차원적 응력 분석
Three dimensional stress analysis of implant-supported prosthesis with various misfit
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양홍서
(전남대학교 치과대학 보철학교실) ;
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정현주
(전남대학교 치과대학 치주과학교실) ;
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박영준
(전남대학교 치과대학 치과재료학교실) ;
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박상원
(전남대학교 치과대학 보철학교실) ;
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Yang, Hong-So
(Department of Prosthodontics, College of Dentistry, Chonnam National University) ;
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Chung, Hyun-Ju
(Department of Periodontology, College of Dentistry, Chonnam National University) ;
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Park, Yeong-Joon
(Department of Dental Materials, College of Dentistry, Chonnam National University) ;
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Park, Sang-Won
(Department of Prosthodontics, College of Dentistry, Chonnam National University) ;
- Kunavisarut, Chatchai (Department of Prosthodontics, Dental School, University of North Carolina)
- 발행 : 2001.12.30
초록
To evaluate the effect of misfit in two implant-supported fixed partial dentures in the posterior of the mandible, variations of the standard finite element models were made by changing the location of the gap as follows: 1) no gap present; 2) located between the gold cylinder and the abutment on the distal implant; 3) gap located between the gold cylinder and the abutment on the mesial implant. The results of this study were as follows: 1. When the location of the gap was close to the load applied on the prosthesis, the stress in the prosthesis, implant components and surrounding bone increased. 2. The presence of cantilever increased the stress in the prosthesis, implant and surrounding bone significantly, regardless of the presence of the gap. 3. When there was a gap between the prosthesis and abutment, the stress in the bone around the implant increased. 4. When passive fit was achieved, the stress was distributed widely in each component with less peak stress in each component. 5. The inner structures of the implant components, the gold screw and the abutment screw bear more stress when the prosthesis did not exhibit passive fit with the abutments than when passive fit was present.