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KMID : 0362419910290030001
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Journal of Korean Academy of Prosthodontics
1991 Volume.29 No. 3 p.1 ~ p.32
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A STUDY ON THE CONNECTION MODALITY BETWEEN IMPLANT AND TOOTH IN OSSEOINTEGRATED PROSTHETIC TREAMENT USING FINITE ELEMENT ANALYSIS
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Kim Yong-Ho
Kim Yung-Soo
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Abstract
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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.
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KEYWORD
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osseointegration, implant, mobility, stress, finite, elementanalysis
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