The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)
- Volume 38 Issue 5
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- Pages.583-594
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- 2000
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
THE EFFECT OF CYCLIC LOADING ON THE RETENTIVE STRENGTH OF FULL VENEER CROWNS
반복 하중이 Full veneer crown의 유지력에 미치는 영향에 관한 연구
- Kim, Ki-Youn (Department of Prosthodontics, Graduate School, Seoul National University) ;
- Lee, Sun-Hyung (Department of Prosthodontics, Graduate School, Seoul National University) ;
- Chung, Hun-Young (Department of Prosthodontics, Graduate School, Seoul National University) ;
- Yang, Jae-Ho (Department of Prosthodontics, Graduate School, Seoul National University) ;
- Heo, Seong-Joo (Department of Prosthodontics, Graduate School, Seoul National University)
- 김기연 (서울대학교 치과대학 치과보철학교실) ;
- 이선형 (서울대학교 치과대학 치과보철학교실) ;
- 정헌영 (서울대학교 치과대학 치과보철학교실) ;
- 양재호 (서울대학교 치과대학 치과보철학교실) ;
- 허성주 (서울대학교 치과대학 치과보철학교실)
- Published : 2000.10.01
Abstract
Dislodgement of a crown or extension bridge and the loosening of a retainer of a bridge is a serious clinical problem in fixed restoration. Generally these problems are considered to be associated with deformation of the restoration. During biting, the restoration is subjected to complex forces and deforms considerably within the limit of its elasticity. Deformation of the restoration under the occlusal force induces excessive stress in the cement film, which then leads to the cement fracture. Such a fracture may eventually cause loss of the restoration. Because most of the past retention tests for full veneer crown were done without fatigue loading, they were not exactly simulating intraoral environment. And the purpose of this study was to evaluate the effect of cyclic cantilever loading on the retentive strength of full veneer crowns depending on different type of cements and taper of prepared abutment. Steel dies with