Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Evaluation of Bond Strength in cp-Ti and Non-precious Metal-Ceramic System Using a Gold Bonding Agent

티타늄과 비귀금속 합금에 중간층으로 적용한 Au bonding agent의 금속-도재 결합에 대한 평가

  • Lee, Jung-Hwan (Department of Dental Laboratory Technology, Gwang-Ju Health college University) ;
  • Ahn, Jae-Seok (Dental Laboratory, Korea University Ansan Hospital)
  • 이정환 (광주보건대학 치기공과) ;
  • 안재석 (고려대학교의료원 안산병원 치과기공실)
  • Received : 2009.10.30
  • Published : 2009.12.30
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Abstract

The aim of this study was to evaluate the bond strength of using a Au bonding agent applied on cp-Ti and nonprecious metal-gold-ceramic system. Metallic frameworks(diameter: 5mm, height: 20mm)(N=56, n=7per group) cast in Ni-Cr alloy, Co-Cr alloy and cp-Ti were obtained using acrylic templates and airborne particle abraded with $110{\mu}m$ aluminum oxide. Au bonding agent was applied on wash opaque firing as intermediate layer. SEM and SEM/EDS line profile were performed on the cutting the cross-section of the metal substrate-porcelain with intermediate Au coating. Groups were tested using shear bond strength(SBS) testing at 0.5mm/min. The mean SBS values for the ceramic-Au layer-metal combination were significantly higher than those ceramic-metal combination. While ceramic-Au layer-cp-Ti combinations failed to increase bond strength instead of using a titanium bonding porcelain. The appication of using Au intermediate layer significantly improve the bond strength combination with metal-ceramic system.

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