| 치관 내 캔틸레버 양에 따른 내측 연결 형태 임플란트의 기계적 강도에 대한 연구 |
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윤미정1, 허중보2, 정창모3, 전영찬4, 강은숙5 |
1부산대학교 치의학전문대학원 보철학교실
2부산대학교 치의학전문대학원 보철학교실
3부산대학교 치의학전문대학원 보철학교실
4부산대학교 치의학전문대학원 보철학교실
5인제대학교 해운대 백병원 보철과 |
| Effect of intra-crown cantilever on mechanical strength of internal conical joint type implant |
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Mi-Jung Yun1, Jung-Bo Huh2, Chang-Mo Jeong3, Young-Chan Jeon4, Eun-Sook Kang5 |
1Department of Prosthodontics, College of Dentistry Pusan National University
2Department of Prosthodontics, College of Dentistry Pusan National University
3Department of Prosthodontics, College of Dentistry Pusan National University
4Department of Prosthodontics, College of Dentistry Pusan National University
5Department of Prosthodontics, In-Je University Haeundae Paik Hospital |
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| 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. |
| Key Words:
cantilever;fatigue test;internal conical joint type implant; |
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