Effect of Application of ZirLiner® and Blasting Treatments on Shear Bond Strength of Zirconia-Veneered Porcelain Interface

지르코니아-전장도재 계면의 전단결합강도에 대한 ZirLiner® 적용과 분사처리의 영향에 관한 연구

  • Shin, Young-Ho (Department of Prosthodontics, College of Dentistry, Wonkwang University) ;
  • Lee, Yu-Na (Department of Biomaterials Science, College of Dentistry, Dankook University) ;
  • Lee, Hae-Hyoung (Department of Biomaterials Science, College of Dentistry, Dankook University) ;
  • Dong, Jin-Keun (Department of Prosthodontics, College of Dentistry, Wonkwang University) ;
  • Oh, Sang-Chun (Department of Prosthodontics, College of Dentistry, Wonkwang University)
  • 신영호 (원광대학교 치과대학 보철학교실) ;
  • 이유나 (단국대학교 치과대학 생체재료학교실) ;
  • 이해형 (단국대학교 치과대학 생체재료학교실) ;
  • 동진근 (원광대학교 치과대학 보철학교실) ;
  • 오상천 (원광대학교 치과대학 보철학교실)
  • Received : 2008.01.13
  • Accepted : 2008.03.25
  • Published : 2008.03.30

Abstract

The purpose of this study was to evaluate effect of application of $ZirLiner^{(R)}$ and blasting treatments on shear bond strength of zirconia-veneered porcelain interface. 60 uncolored zirconia plates and 30 colored zirconia plates were fabricated and divided into nine groups of 10 according to blasting treatment such as as-ground, glass blasting and alumina blasting and zirliner application. Veneering porcelains were built up over the center of the treated zirconia ceramic surface using jig and fired according to the manufacturers' instructions. Each specimen was completely embedded in acrylic resin. The specimens were placed in a mounting jig and subjected to shear force by a universal testing machine. Load was applied at a crosshead speed of 0.5㎜/min until failure. Average shear strengths were analyzed with two-way analysis of variance and one-way analysis of variance and the Duncan's post-hoc test. The fracture surfaces of the failed specimens were examined by SEM. The obtained results were as follows: 1. Depending on surface treatment by blasting, the degree of roughness is revealed in the order of Glass-blasted, As-ground, and Alumnia-blasted. The roughness average of uncolored and colored zirconia ceramic were not significantly different from blasting treatments. 2. In uncolored zirconia ceramic, the shear bond strength were not significantly different from blasting treatments. However, the shear bond strength were significantly different from Zirliner application. 3. Used ZirLiner, mean shear bond strength of colored zirconia was lower than uncolored zirconia. Especially, mean shear bond strength of colored zirconia was quite low with alumina-blasting treatment. 4. SEM analysis showed that veneered porcelain failed in zirconia ceramic interface and there was no cohesive failure.

Acknowledgement

Supported by : 한국과학재단

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