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http://dx.doi.org/10.4047/jkap.2010.48.2.151

Shear bond strength of veneer ceramic and colored zirconia by using aqueous metal chloride solutions  

Yun, Kwi-Dug (Department of Prosthodontics, School of Dentistry, Chonnam National University)
Ryu, Su-Kyoung (Department of Prosthodontics, School of Dentistry, Chonnam National University)
Vang, Mong-Sook (Department of Prosthodontics, School of Dentistry, Chonnam National University)
Yang, Hong-So (Department of Prosthodontics, School of Dentistry, Chonnam National University)
Kim, Hyun-Seung (Kuwotech Co. Ltd.)
Park, Sang-Won (Department of Prosthodontics, School of Dentistry, Chonnam National University)
Publication Information
The Journal of Korean Academy of Prosthodontics / v.48, no.2, 2010 , pp. 151-157 More about this Journal
Abstract
Purpose: The purposes of this study was to evaluates shear bond strength between zirconia core and veneer-ceramic in order to examine the clinical practice of colored zirconia block fabricated by infiltration method into the metal chloride solution. Material and methods: CNU block and $Everest{(R)}$ ZS blank were used. VITA In-$Ceram{(R)}$2000 YZ Coloring liquid (LL1) and 3 aqueous metal chloride solutions containing chromium and molybdenum ingredients were used. 40 zirconia specimens were prepared into cuboid shape ($5{\times}5{\times}10 mm$). All specimens were divided into 5 groups by infiltrating into the coloring liquids. After that, porcelain was build up into the shape of $5{\times}5{\times}4mm^3$, followed by sintering. The maximum loading and shear bond strength was measured. Failure patterns and failure sites were examined. Results: 1. There were no statistical differences in shear bond strength between zirconia blocks (P > .05). 2. There were no statistically significant differences in shear bond strength between non-colored and colored zirconia blocks, while shear bond strength of non-colored zirconia blocks is higher than that of colored specimen (P > .05). 3. In the comparison with shear bond strength among colored zirconia blocks, there were no statistical differences according to kinds of coloring liquid (P > .05). 4. Mixed failure patterns were mainly observed in the failure between zirconia and veneering ceramic. The veneering ceramic failure of all specimens was observed in either interface of zirconia or veneering ceramic. Conclusion: Shear bond strength between colored zirconia and veneering ceramic shows lower tendency than non-colored zirconia, but there was clinically allowable value.
Keywords
Infiltration; Metal chloride solution; Shear bond strength; Zirconia;
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