Effect of different surface treatments on the shear bond of zirconia substructure and veneering ceramic

Abstract

Abstract: PURPOSE: To investigate the effect of different surface treatments on the shear bond strength of zirconia substructure and veneering ceramic. METHODS: Kavo zirconia specimens were divided into 4 groups (each group contains 8 specimens) according to different surface treatments: Group A was pigmented by dipping presintered blocks in the coloring solution VITA LL5, and not treated with abrasion after firing; Group B was pigmented with the same solution and then dealt with abrasion; Group C was not treated by any methods and Group D was only dealt with abrasion. All the veneering ceramics were fired on the zirconia substructure by slip-casting technique and the shear bond strength of zirconia substructure and veneering ceramic were tested. The data was analyzed statistically with SPSS 10.0 software package. RESULTS: The shear bond strength of the abrasive-treated groups (group B and group D) was significantly higher than the other two groups, but no significant difference was found between pigmented-treated groups (group A and group C) and non-pigmented-treated groups (group B and group D). CONCLUSIONS: Abrasion can increase the shear bond between Kavo zirconia substructure and veneering ceramics while pigmentation has no significant effect on the bonding strength.

Key words: Zirconia, Abrasion, Pigment solution, Shear bond strength

CLC Number:

R783.1

ZHONG Qun, PENG Yan, WU Xue-ying, Weng Jia-wei. Effect of different surface treatments on the shear bond of zirconia substructure and veneering ceramic[J]. Shanghai Journal of Stomatology, 2014, 23(3): 300-303.

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