치관 내 캔틸레버 양에 따른 내측 연결 형태 임플란트의 기계적 강도에 대한 연구
Effect of intra-crown cantilever on mechanical strength of internal conical joint type implant
윤미정, 허중보, 정창모, 전영찬, 강은숙,
소속 상세정보
윤미정 ( Yun Mi-Jung ) - 부산대학교 치의학전문대학원 보철학교실
허중보 ( Huh Jung-Bo ) - 부산대학교 치의학전문대학원 보철학교실
정창모 ( Jeong Chang-Mo ) - 부산대학교 치의학전문대학원 보철학교실
전영찬 ( Jeon Yeong-Chan ) - 부산대학교 치의학전문대학원 보철학교실
강은숙 ( Kang Eun-Sook ) - 인제대학교 해운대백병원 보철과
KMID : 0362720150530050360
Abstract
Purpose : The purpose of this study was to evaluate the effect of amount of cantilever in intra-crown according to implant
fixture position on mechanical strength of internal conical joint type implant.
Materials and Methods : Internal conical joint type implant fixture, abutment screw, abutment was connected and gold alloy prostheses were fabricated and cemented on abutment. For fatigue fracture test, the specimens were loaded to the 350 N, 2,000,000 cycle on 3, 4, 5, and 6 mm off-center of gold alloy prostheses. The fracture pattern of implant component was observed.
Results : No fatigue fracture found on 3 and 4 mm group . But initial crack pattern found on 3 specimens of 4 mm group. Fatigue fracture found on all specimens of 5 mm group. But complete fracture was not observed. One specimen of 6 mm group fracture completely. Implant fixture fracture wax not observed.
Conclusion : The mechanical failure of implant prostheses increased with the loading area farther from center of implant fixture. To reduce mechanical problem of internal joint type implant, surgical and prosthetic consideration is needed.
키워드
cantilever; fatigue test; internal conical joint type implant
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