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A STUDY ON THE CONNECTION MODALITY BETWEEN IMPLANT AND TOOTH IN OSSEOINTEGRATED PROSTHETIC TREAMENT USING FINITE ELEMENT ANALYSIS 골유착성 임플랜트 보철치료시 자연지대치와의 연결형태에 관한 유한요소적 응력분석 연구
Yong-Ho Kim, Yung-Soo Kim
김용호, 김영수

The osseointegrated dental prosthetic treatment has develped for the edentulous patient with
severely resorbed alveolar ridge, and had given us a successful cinical results to date. Nowdays
the partially edentulism is included among the indications of the osseointegrated prosthetic
treatment.
The purpose of this study was to analyze the stress distribution at supportingg bone according to
the types of connection modality between implant and tooth in the superstructure.
Two dimensional finite element stress analysis was applied for this study. FEM models were
created using sofrware Super SAP for MBM 16bit personal computer. Three modalities of
connection were modeled and analyzed under load condition.
The results were as follws :
1. The stress develped at tooth and implant in the cancellous bone was lower in the case of
rigid connection than in the case of norigid connection. but higher between the two implants
in the case of rigid connection than in the case of nonrigid connection.
2.  The stress developed at the cortical bone and at the supporting bone interface was lower in
the case of rigid connection than in the case of nonrigid connection.
3.  The stress developed at the supporting tissue interface of the implant nearby the tooth, was
lower in the case of rigid connection than in the case of nonrigid connection.
4.  The stress developed at the supporting tissue interface of posteriormost implant, was same
between th cases of rigid and nonrigid connection.
5.  The stress distribution related to the freestanding case was generally similar to the stress
distribution pattern of nonrigid connection case.
6. The magnitude of applied load which produces deformation within elastic limit, had
influence on the absolute value of stress, but had no influence on the pattern of stress
distribution of the same case.

* Keywords: osseointegration, implant, mobility, stress, finite, element analysis

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