The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

THE EFFECT OF PREPARATION PROCEDURE ON IMPLANT-ABUTMENT JOINT STABILITY

임플랜트 지대주의 삭제과정이 결합부 안정성에 미치는 영향

  • Lee Jang-Wook (Department of Prosthodontics, Graduate School, Seoul National University) ;
  • Kim Chang-Whe (Department of Prosthodontics, Graduate School, Seoul National University) ;
  • Jang Kyung-Soo (Department of Prosthodontics, Graduate School, Seoul National University) ;
  • Lim Young-Jun (Department of Prosthodontics, Graduate School, Seoul National University)
  • 이장욱 (서울대학교 치과대학 치과보철학교실) ;
  • 김창회 (서울대학교 치과대학 치과보철학교실) ;
  • 장경수 (서울대학교 치과대학 치과보철학교실) ;
  • 임영준 (서울대학교 치과대학 치과보철학교실)
  • Published : 2005.10.01
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Abstract

Statement of problem: Little is known about the effect of abutment preparation procedure on do-torque values in different implant platform and the relationship of final do-torque values with different implant platform size. Purpose: This study evaluated the effect of abutment preparation procedure on do-torque values in different implant platform and the relationship of final do-torque values with different implant platform size. Material and method: Six ITI implants (2 narrow-neck implants, 2 regular-neck implants, 2 wide-neck implants) and six Branemark implants (2 narrow platforms, 2 regular platforms, 2 wide platforms) were embedded in each acrylic resin block with epoxy resin. Eighteen $synOcta^(R)$ abutments (6 narrow-neck implant-abutments, 6 regular-neck implant-abutments, 6 wide-neck implant-abutments) and eighteen esthetic abutments (6 narrow platform-abutments, 6 regular platform-abutments, 6 wide platform-abutments) were tightened to each implant with digital torque gauge. Initial do-torque values were measured using digital torque gauge. After preparation of abutments, Final do-torque values were measured with digital torque gauge. Results and conclusion: 1. Screws loosening or abutments motion were not detected in all experimental group, but some scratches of implant-abutment joints were detected in all group 2. Reduction ratios of final do-torque values were greater than initial do-torque values in all measured group, except in narrow-neck implant-abutment group (p<0.05). 3. Reduction ratios of final do-torque values in wide-neck implant-abutment group were greater than regular-neck implant-abutment group (p<0.01). 4. The greatest standard deviation value was detected in wide platform group in both implant systems.

Keywords

References

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