대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제42권1호
  • /
  • Pages.83-93
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  • 2004
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  • 0301-2875(pISSN)
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  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지

임플란트 고정체와 지대주 연결 형태의 차이에 따른 유지 나사 안정성에 대한 연구

A VITRO STUDY OF RETAINED SCREW STABILITY BY VARIOUS CONNECTION DESIGNS BETWEEN FIXTURE AND ABUTMENT IN IMPLANT DENTISTRY

  • 양재식 (전남대학교 치과대학 보철학교실) ;
  • 방몽숙 (전남대학교 치과대학 보철학교실) ;
  • 조규종 (전남대학교 치과대학 보철학교실)
  • Yang Jae-Sik (Department of Prosthodontics, College of Dentistry, Chonnam National University) ;
  • Vang Mong-Sook (Department of Prosthodontics, College of Dentistry, Chonnam National University) ;
  • Jo Gyu-Jong (Department of Prosthodontics, College of Dentistry, Chonnam National University)
  • 발행 : 2004.02.01
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초록

Statement of problem : Since the concept of osseointegrated dental implant by $Br{\aa}nemark$ et al was first applied to mandibular full edentulous patients. Recently it is considerated the first treatment option on missing teeth. A common problem associated with dental implant restorations is loosening of screws that retain the prosthesis to the abutment and the abutment to the implant fixture. Purpose : This study is to examine the influence on screw loosening of implant-abutment designs. Material and methods : External hex, cone screw, beveled hex, cam cylinder, cylinder hex by means of evaluating the loosening torques, with respect to a range of tightening torques after repeated loading. Result : 1. Cone screw, beveled hex groups are the highest initial tightening rate and cylinder hex, external hex groups are the lowest initial tightening rate (p < 0.05). 2. Cone screw groups are the highest after repeated loading tightening rate and cylinder hex groups are lowest after repeated loading tightening rate(p < 0.05). 3. Cone screw groups have the highest initial stability and anal stability. 4. All groups are decreased tightening rate after repeated loading.

키워드

참고문헌

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