금속표면처리제에 따른 코발트-크롬 합금과 의치상용 레진의 결합강도
BOND STRENGTH BETWEEN COBALT-CHROMIUM ALLOY AND DENTURE BASE RESIN ACCORDING TO ADHESIVE PRIMERS
박종일, 권주홍, 이해형, 조혜원,
소속 상세정보
박종일 ( Park Jong-Il ) - 원광대학교 치과대학 치과보철학교실
권주홍 ( Kwon Ju-Hong ) - 원광대학교 치과대학 치과보철학교실
이해형 ( Lee Hae-Hyoung ) - 원광대학교 치과대학 치과보철학교실
조혜원 ( Cho Hye-Won ) - 원광대학교 치과대학 치과보철학교실
KMID : 0362420000380020160
Abstract
This study evaluated the effects of four adhesive metal primers on the shear bond strength of a heat curing denture base resin(Lucitone 199) to cobalt-chromium alloy(Biosil-f). The adhesive metal primers were Cesead Opaque Primer, Metal Primer, MR Bond, and Super-Bond liquid. The metal surface primed or nonprimed was filled with the heat-curing methyl methacrylate resin. The specimens were stored in water at 37 degrees C for 24 hours and the alternately immersed in water bath at 5 C and 55 C for up to 2,000 thermal cycles. Shear bond strengths were measured using UTM at a crosshead speed of 0.5mm/min. Failure surface were examined under magnifying glasses. All the primers examined improved the shear bond strength between denture base resin and cobalt chromium alloy compared with nonprimed specimens before thermal cycling. The bond strength of Cesead Opaque Primer was greatest. And after 2,000 thermal cycles, the bond strengths between resin and cobalt-chromium alloy were decreased but the difference between thermal cycling 0 and 2,000 at Cesead Opaque primer and Metal Primer were not significant. This study indicated that Cesead Opaque Primer & Metal Primer is effective primers to obtain higher bond strength between heat cured denture base resin and cobalt-chromium alloy.
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