The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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INFLUENCE OF SURFACE TREATMENTS OF DENIAL ALLOYS ON BOND STRENGTH OF GLASS IONOMER AND POLYCARBOXYLATE CEMENT

치과용 합금의 표면 처리가 글라스아이오노머 시멘트와 폴리카르복실레이트 시멘트의 결합력에 미치는 영향

  • Lee, Heon-Woo (Department of Prosthodontics, College of Dentistry, Kyung Hee University) ;
  • Woo, Yi-Hyung (Department of Prosthodontics, College of Dentistry, Kyung Hee University) ;
  • Lim, Ho-Nam (Department of Prosthodontics, College of Dentistry, Kyung Hee University) ;
  • Choi, Boo-Byung (Department of Prosthodontics, College of Dentistry, Kyung Hee University)
  • 이헌우 (경희대학교 치과대학 치과보철학교실) ;
  • 우이형 (경희대학교 치과대학 치과보철학교실) ;
  • 임호남 (경희대학교 치과대학 치과보철학교실) ;
  • 최부병 (경희대학교 치과대학 치과보철학교실)
  • Published : 1996.04.01
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Abstract

Bond strength of four different cements to dental casting alloys which were treated with #600 emery, tin-plating, and $50{\mu}m$ sandblasting were evaluated. The alloy specimens were Type III Gold alloy(Degulor C), Palladium-Silver alloy(Pors on 4), Nickel-Chromium(Rexillium III) alloy, which were embedded in acrylic resin disc. The specimens were treated with #600 emery and tin plating, #600 emery and sandblasting, then bonded using Fuji I, Ketac Cem(Glass ionomer cements), Poly F, Livcarbo(Polycarboxylate cements). The specimens were immersed in water for 24 hours and shear bond strengths were evaluated by Instron Machine. Tin plated, sandblasted, and debonded alloy surfaces were observed using scanning electron microscope. On the basis of this study, the following conclusions could be drawn. 1. In the tin plated alloy group, increase in bond strength of glass ionomer cements was statistically insignificant. 2. In the tin plated alloy group, increase in bond strength of polycarboxylate cements was statistically significant, except nickel-chromium alloy. 3. Sandblasted alloy group showed higher bond strength than that of tin-plated alloy group.

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