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In-Ceram 코아의 표면처리 방법에 따른 레진시멘트와의 전단결합강도에 관한 연구
THE INFLUENCE OF SURFACE TREATMENTS ON THE SHEAR BOND STRENGTH OF RESIN CEMENTS TO IN-CERAM CORE

윤정태   (서울대학교 치과대학 치과보철학교실UU0000691  ); 이선형   (서울대학교 치과대학 치과보철학교실UU0000691  ); 양재호   (서울대학교 치과대학 치과보철학교실UU0000691  );
  • 초록

    An increasing demand for esthetic restorations has led to the development of new ceramic systems. In-Ceram, a glass-infiltrated alumina ceramic has three to few times greater flexural strength than other ceramic glass material. Because of its high strength, In-Ceram has been suggested as inlay, crown, laminate veneer and core material for resin bonded fixed partial dentures. This clinical application requires a stable resin bond to In-Ceram core. The purpose of this study was to evaluate the shear bond strength between In-Ceram core and resin cements according to various surface treatments and storage conditions. The surface of each In-Ceram core sample was subjected to one of the following treatments and then bonded to Panavia 21 or Variolink II resin cement. ; (1) sandblasting with $110{\mu}m$ aluminum oxide powder, (2) sandblasting and silanization, (3) sandblasting and Siloc treatment, (4) sandblasting and Targis link application. Each of eight bonding groups was tested in shear bond strengths after the following storage times and thermocycling. ; A) 24 hours storage in distilled water at $37^{\circ}C$ , B) 5 weeks storage in distilled water at $37^{\circ}C$ C) 5 weeks storage in distilled water at $37^{\circ}C$ and thermocycled 2,000 thormocycling for every 10 days(totally 10,000 thermocycting) in $5^{\circ}C-55^{\circ}C$ bath. The bond failure modes were observed with scanning electron microscope(SEM). The results were as fellows : 1 The shear bond strengths of sandblasting group were significantly lesser than the other groups after 24 hours water storage. No significant difference of bonding strengths was found between storage time conditions(24 hours and 5 weeks). The shear bond strengths showed a tendency to decrease in Variolink II bonding groups and to increase in Panavia 21 bonding groups. 3. After thermocycling, the shear bond strengths of all groups were significantly decreased(p


  • 주제어

    In-Ceram .   Resin cement .   Shear bond strength .   Sandblasting .   Silane .   Siloc .   Targis link .   Water storage .   Thermocycling.  

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