The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

THE EFFECTS OF FABRICATION OF GOLD CYLINDER AND ABUTMENT ON THE FITNESS AND PRELOAD OF THE PROSTHESIS

지대주와 금속 실린더의 종류가 보철물의 적합도 및 preload에 미치는 영향

  • Ha Jum-Im (Dept. of Dentistry, Graduate School, Wonkwang University) ;
  • Jeong Hoe-Yeol (Dept. of Dentistry, Graduate School, Wonkwang University) ;
  • Kim Yu-Lee (Dept. of Dentistry, Graduate School, Wonkwang University) ;
  • Cho Hye-Won (Dept. of Dentistry, Graduate School, Wonkwang University)
  • 하점임 (원광대학교 치과대학 치과보철학교실) ;
  • 정회열 (원광대학교 치과대학 치과보철학교실) ;
  • 김유리 (원광대학교 치과대학 치과보철학교실) ;
  • 조혜원 (원광대학교 치과대학 치과보철학교실)
  • Published : 2003.08.01
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Abstract

Statement of problem : Recently various implant components such as premachined gold cylinder, plastic cylinder gold UCLA abutment and plastic abutment were developed and used clinically without clinical investigation. Purpose : The purpose of this study was to evaluate the effects of fabrication of gold cylinder on the fitness and preload of the standard abutment and also the effects of fabrication of UCLA gold abutment on the fitness and stress transfer around the implant fixture. Material and method : Three kinds of gold cylinders such as, as-received gold cylinder (Nobel Biocare, Sweden), gold cylinder after casting, and plastic cylinder after casting with type IV gold alloy were tested over the top of the standard abutment. At the same time, three types of abutments such as, gold UCLA abutment before and after casting, and plastic abutment after casting were tested. The cylinder and abutment was secured over the fixture with conventional pre-load values using an electronic torque controller (Nobel Biocare, Sweden). The fitness of the abutment on the fixture and gold cylinder over the standard abutment were measured using the microhardness tester (MXT 70, Matsuzawa, Japan). Preload and the strain values were recorded using the strain balance unit (SB-10, Measurement group, Raleigh, USA) and strain indicator (P-3500, Measurement group, Raleigh, USA) systems. Results and conclusion : 1. Significant differences were found in the fit between the gold cylinder and plastic cylinder. 2 There were significant differences between the preload of the gold cylinder and that of the plastic cylinder. 3. Significant differences were found in the fit between the gold UCLA abutment and plastic UCLA abutment. 4. There were no significant differences in the stress generated on the supporting structure of the fixture among different cylinder and abutment groups.

Keywords

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