대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제44권5호
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  • Pages.526-536
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  • 2006
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  • 0301-2875(pISSN)
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  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지

섬유성 강화 컴포지트를 사용한 임플랜트 고정성 보철물의 굴곡강도

FLEXURAL STRENGTH OF IMPLANT FIXED PROSTHESIS USING FIBER REINFORCED COMPOSITE

  • 강경희 (경희대학교 치과대학 치과보철학교실) ;
  • 권긍록 (경희대학교 치과대학 치과보철학교실) ;
  • 이성복 (경희대학교 치과대학 치과보철학교실) ;
  • 최대균 (경희대학교 치과대학 치과보철학교실)
  • Kang, Kyung-Hee (Department of Prosthodontics, Division of Dentistry, Graduate School, Kyung Hee University) ;
  • Kwon, Kung-Rock (Department of Prosthodontics, Division of Dentistry, Graduate School, Kyung Hee University) ;
  • Lee, Sung-Bok (Department of Prosthodontics, Division of Dentistry, Graduate School, Kyung Hee University) ;
  • Choi, Dae-Gyun (Department of Prosthodontics, Division of Dentistry, Graduate School, Kyung Hee University)
  • 발행 : 2006.10.31
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초록

Statement of problem : Use of fiber composite technology as well as development of nonmetal implant prosthesis solved many problems due to metal alloy substructure such as corrosion. toxicity, difficult casting, expensiveness and esthetic limit. After clinical and laboratory test, we could find out that fiber-reinforced composite prostheses have good mechanical properties and FRC can make metal-free implant prostheses successful. Purpose : The purpose of this study is to evaluate the flexural strength of implant fixed prosthesis using fiber reinforced composite. Material and methods : 2-implant fixture were placed in second premolar and second molar area in edentulous mandibular model, and their abutments were placed, and bridge prostheses using gold, PFG, Tescera, and Targis Vectris were fabricated. Tescera was made in 5 different designs with different supplements. Group I was composed by 3 bars with diameter 1.0mm and 5 meshes, 2 bars and 5 meshes for Group II, 1 bar and 5 meshes for Group III, and only 5 meshes were used for Group IV. And Group V is composed by only 3 bars. Resin (Tescera) facing was made to buccal part of pontic of gold bridge. All of gold and PFG bridges were made on one model, 5 Targis Vectris bridges were also made on one model, and 25 Tescera bridges were. made on 3 models. Each bridge was attached to the test model by temporary cement and shallow depression was formed near central fossa of the bridge pontic to let 5 mm metal ball not move. Flexual strength was marked in graph by INSTRON. Results : The results of the study are as follows. The initial crack strength was the highest on PFG. and in order of gold bridge Tescera I, Tescera II, Targis vectris, Tescera IV, Tescera III, and Tescera V. The maximum strength was the highest on gold bridge, and in order of PFG, Tescera I, Tescera IV Tescera II, Targis vectris, Tescera III, and Tescera V. Conculsions : The following conclusions were drawn from the results of this study. 1. Flextural strength of implant prosthesis using fiber reinforced composite was higher than average posterior occlusal force. 2. In initial crack strength, Tescera I was stronger than Tescera V, and weaker than PFG. 3. Kinds and number of auxillary components had an effect on maximum strength, and maximum strength was increased as number of auxillary components increased. 4 Maximum strength of Tescera I was higher than Targis vectris, and lower than PFG.

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