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KMID : 1035320140410020113
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Korean Society for Dental Materials
2014 Volume.41 No. 2 p.113 ~ p.120
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The effect of selective infiltration etching technique on the shear bond strength between zirconia and veneering ceramic
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Park Da-Ryeong
Kim Jeong-Mi
Jeoung Su-Ha
Bae Ji-Myung
Oh Seung-Han
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Abstract
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The purpose of this research was to treat the surface of zirconia via glass infiltration etching technique and estimate the effect of this etching technique on the shear bond strength of zirconia and veneering ceramic. 3 mol% Y2O3 stabilized zirconia powder and glass powder used in preparing veneering ceramic were mixed with various amounts (20, 40, 60, 80, and 100 wt%). The shear bond strength and failure mode of veneering ceramic which was produced on the etched zirconia surface were analysed. From the results of bond strength test showed that the value of 80 wt% glass group (35.52 ± 5.24 MPa) was significantly higher than that of other experimental groups (p < 0.05). The observation of fractured surfaces of experimental specimens indicated that 80 and 100 wt% glass groups showed cohesive failure and other groups illustrated adhesive and mixed failure mostly. Therefore, glass infiltration etching technique was expected to enhance the bond strength of zirconia and veneering ceramic and be feasible in clinical usage.
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KEYWORD
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selective infiltration etching, zirconia, veneering ceramic, shear bond strength
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