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Effect of Hydrofluoric Acid Etching on Shear Bond Strength between Resin Cement and Zirconia cores

표면 불산처리가 레진시멘트와 지르코니아 하부구조물의 전단결합강도에 미치는 영향

  • 김사학 (경동대학교 치기공학과) ;
  • 김선문 (경동대학교 치기공학과) ;
  • 김종견 (경동대학교 호텔경영학과)
  • Received : 2018.08.20
  • Accepted : 2018.10.01
  • Published : 2018.10.28

Abstract

The purpose of this study was to evaluate the influence of hydrofluoric acid etching treatment on the bonding strength of yttria-stabilized tetragonal zirconia polycrystal(Y-TZP). Four groups of zirconia-resin cement specimens were prepared; 1) ZGS group (zirconia, no treatment), 2) ZGSH group (zirconia, hydrofluoric acid etching treatment) 3) H-ZGS group (Hybrid zirconia, no treatment) 4) H-ZGSH group (Hybrid zirconia, hydrofluoric acid etching treatment). The shear bond strength between zirconia and porcelain was measured using a Instron Universal Testing Machine(Model DBBP-500, Instron Corporation, Kyonggi, Korea). Data were statistically analyzed using independent t-test and two-way ANOVA(${\alpha}=0.05$). The ceramic-resin cement bonding strength was affected by hydrofluoric acid etching treatment(p<0.05). Digital microscope examination of the fracture surface showed mixed failures with adhesive and cohesive types in hydrofluoric acid etching treatment with treated zirconia and hybrid zirconia groups.

Acknowledgement

Supported by : 경동대학교

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