치과용 합금의 처리가 글라스아이오노머 시멘트와 플리카르복실레이트시멘트의 결합력에 미치는 영향
Influence of surface treatments of dental alloys on bone strength of glass ionomer and polycarboxxylate cement
이헌우, 우이형, 임호남, 최부병,
소속 상세정보
이헌우 ( Lee Heon-Woo ) - 경희대학교 치과대학 치과보철학교실
우이형 ( Woo Yi-Hyung ) - 경희대학교 치과대학 치과보철학교실
임호남 ( Lim Ho-Nam ) - 경희대학교 치과대학 치과보철학교실
최부병 ( Choi Boo-Byung ) - 경희대학교 치과대학 치과보철학교실
KMID : 0362419960340010125
Abstract
Bond strength of four different cement to dental casting alloys which were treated with #600 emery, tin-plating, and 50㎛ 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 surcaces 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 in 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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