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KMID : 1146620180070020045
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Journal of Korean Academy of Advanced General Dentistry
2018 Volume.7 No. 2 p.45 ~ p.50
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Comparative Study of Shear Bond Strength of Resin Cements and Zirconia Surfaces using Various Pre-treatment Method
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Cho Sung-Chan
Ham Mi-Hyoun
Kim Won-Ho
Lee Myung-Hyun
Oh Nam-Sik
Kim Hyo-Jung
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Abstract
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This study was designed to evaluate the effect of hot-HF etching surface treatment on the shear bond strength between zirconia and resin cement. Zirconia surfaces was randomly divided into 4 groups (n=10) according to different treatments(blank control; Airborne-Particle-Abrasion (APA); hot-etching with 9% HF gel(HE); combine with Airborne-Particle-Abrasion and hot-etching with HF gel (APA+HE)). After surface treatment, painted with primer (Monobond N, Ivoclar vivadent, Lichtenstein) previously, was applied and resin cement(Multilink N, Ivoclar vivadent, Lichtenstein) cylinders (diameter: 2.0 mm) were bonded. All specimens were subjected to shear bond strength testing using a universal testing machine with a crosshead speed of 0.7mm/min. All data were statistically analyzed using one-way analysis of variance and multiple-comparison least significant difference tests(α=0.05). The zirconia surface of different treatment produced higher bond strength than control without surface treatment. Otherwise, no significant difference was detected between different treatment groups (P<0.05). The shear bond strength of APA following by Hot-HF etching treatment decreased. Surface treatment of zirconia with hot-HF etching gel enhanced the surface roughness and bond strength between the zirconia and the resin cement.
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KEYWORD
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Zirconia surface treatment, Hot-HF etching, Airborne-Particle-Abrasion, Resin cement, Shear bond strength
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