The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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BOND STRENGTH BETWEEN COBALT-CHROMIUM ALLOY AND DENTURE BASE RESIN ACCORDING TO ADHESIVE PRIMERS

금속표면처리제에 따른 코발트-크롬 합금과 의치상용 레진의 결합강도

  • Park, Jong-Il (Department of Prosthodontics, College of Dentistry, Wonkwang Dental Research Institute Wonkwang University) ;
  • Kwon, Ju-Hong (Department of Prosthodontics, College of Dentistry, Wonkwang Dental Research Institute Wonkwang University) ;
  • Lee, Hae-Hyeung (Department of Prosthodontics, College of Dentistry, Wonkwang Dental Research Institute Wonkwang University) ;
  • Cho, Hay-Won (Department of Prosthodontics, College of Dentistry, Wonkwang Dental Research Institute Wonkwang University)
  • 박종일 (원광대학교 치과대학 치과보철학교실, 원광치의학연구소) ;
  • 권주홍 (원광대학교 치과대학 치과보철학교실, 원광치의학연구소) ;
  • 이해형 (원광대학교 치과대학 치과보철학교실, 원광치의학연구소) ;
  • 조혜원 (원광대학교 치과대학 치과보철학교실, 원광치의학연구소)
  • Published : 2000.04.01
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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 $37^{\circ}C$ for 24 hours and the alternately immersed in water bath at $5^{\circ}C\;and\;55^{\circ}C$ 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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