치과임프란트 보철시 치관재료의 차이에 따른 응력 분산의 이차원 유한요소법적 연구

• 발행기관: 대한치과이식임플란트학회
• 저자명: 홍성기 조인호
• 간행물 정보: 『Journal of Dental Implant Research』제13권 제1호, 23~31쪽, 전체 9쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 1993.12.31

영문 초록

The osseointegrated implant transmits any stress waves or shocks to the bone around the fixture because of direct contact with bone. The purpose of this study was to compare the stress distribution due to the different materials used for the dental crown in the implant prosthesis. The used dental materials were ADA type III gold alloy, acrylic resin, composite resin, porcelain. Cr-Co alloy, and their stresses were analyzed by the method of two dimension finite element. The results were as follows : 1. In the interface A and B, all the tested samples demonstrated maximum stress value at the cervical portion of implants. 2. In the interface A and B, there was no significant variations in stress value among the materials used for the superstructure. 3. In vertical section, maximum stress value appeared at the cusp tip of crown, and the differences of the stress distribution according to the dental materials were large at crown portion. 4. In the composite resin and porcelain, high stress concentrations were obseved at the implant super-structure, and stress value was high in the case of the Cr-Co alloy but low in the case of the gold alloy and the acrylic resin. 5. The Cr-Co alloy crown showed the narrowed stress distribution but high stress values in the interface between implant fixture and bony tissue. 6. Dental crown materials showed great influences on the implant abutment but small influences on the interface of bone and implant fixture. 7. The amount ant distribution of stress induced by occlusal forces were more influenced by fixture design and load direction rather than crown material itself.

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