대한의용생체공학회:학술대회논문집 (Proceedings of the KOSOMBE Conference)
- 대한의용생체공학회 1997년도 추계학술대회
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- Pages.511-514
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- 1997
유한요소법을 이용한 치과용 고정체와 치조골에서의 응력분포에 대한 생체 역학적 분석
A Biomechanical Analysis or the Stress Distribution of Dental Implant and Alveolar Bone Utilizing Finite Element Method
- 정지광 (인제대학교 보건대학 의용공학과) ;
- 신정욱 (인제대학교 보건대학 의용공학과) ;
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이성재
(인제대학교 보건대학 의용공학과) ;
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김영곤
(인제대학교 보건대학 의용공학과) ;
- 김정성 (인제대학교 보건대학 의용공학과) ;
- 박정홍 (인제대학교 보건대학 의용공학과)
- Jung, J.K. (Dept. of Biomedical Engineering, College of Health, Inje Univ.) ;
- Shin, J.W. (Dept. of Biomedical Engineering, College of Health, Inje Univ.) ;
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Lee, S.J.
(Dept. of Biomedical Engineering, College of Health, Inje Univ.) ;
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Kim, Y.K.
(Dept. of Biomedical Engineering, College of Health, Inje Univ.) ;
- Kim, J.S. (Dept. of Biomedical Engineering, College of Health, Inje Univ.) ;
- Park, J.H. (Dept. of Biomedical Engineering, College of Health, Inje Univ.)
- Published : 1997.11.28
Abstract
The objective of this study is to propose a finite element based design of the dental implant replacing unction and shape of natural teeth. For this, geometric actors were varied to investigate stress distribution of the alveolar bone around dental implant. In this study, the results were obtained based on the theory of linear elastic, with geometrically axisymmetric assumption. Geometric actors determining implant shape are ranged as 0.2mm-0.6mm, 0.04mm-0.1mm, 0.46mm-0.84mm or height of thread, radius of curvature of thread, and pitch, respectively. The stresses in the alveolar bone caused by biting force playa major role in determining implant stability. Especially, the stress concentration in the cortical bone causes bone resorption and finally makes the implant unstable. Therefore, the stress distributions were investigated on the side of the alveolar bone focusing on the area of cortical bone. The maximum von Mises stress was found to increase up to 6% as the height of thread increases, while its value was to decrease to 19% when the radius of curvature increase within the assigned ranges. For the variation of pitch, the larger size of pitch results in greater maximum von Mises stress when the length of the implant under consideration is fixed. The existence of the neck below the shoulder did not affect the stress distribution in the region of alveolar bone. However, the stresses on the side of the implant near the neck were found to be different by 20% approximately. Therefore, the neck can provide the stability of the implant against continuing biting movement. As a conclusion, the finite element based study shows a potential in designing the dental implant systematically.
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