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KMID : 1004520110270010001
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Journal of Dental Rehabilitation and Applied Science
2011 Volume.27 No. 1 p.1 ~ p.13
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Shear Bond Strength of Composite Resin (TESCERATM ATL) Veneering on Zirconia Surface with Various Surface Treatments
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Park Soo-Jeong
Lee Sung-Bok
Lee Suk-Won
Ahn Su-Jin
Lim Ho-Nam
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Abstract
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The aim of this study was to evaluate shear bond strength of pressed reinforced composite resin (TESCERATMATL) veneering to zirconia with various surface treatments. Forty sintered zirconia specimens and forty pockmarked zirconia specimens were fabricated. All the materials were categorized as Group 1 (Control : porcelain veneering on zirconia surface), Group 2 ( TESCERATM ATL dentine veneering after bonding agent application on zirconia surface), Group 3 (TESCERATM ATL dentine veneering on pockmarked zirconia surface), Group 4 (TESCERATM ATL dentine veneering after bonding agent application on pockmarked zirconia surface), Group 5 (Thermocycling on Group 1), Group 6 (Thermocycling on Group 2), Group 7 (Thermocycling on Group 3), and Group 8 (Thermocycling on Group 4). SBS(Shear bond strength) of 8 groups was determined with an Instron Universal Testing Machine. Also fractured surface of specimens were observed with a scanning electron microscope. There were no significant differences in the initial SBS between Group 1(control group), Group 3, and Group 4. (p>0.05) Group 2 presented the lowest SBS values. There was a no significant difference between just as 24hour water storage and simulated aging on pockmarked zirconia groups. (p>0.05) A formation of pockmarked irregularities on zirconia surface as mechanically pitted surface was reliable method for establishing a stronger bond between TESCERATM ATL and zirconia-based material.
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KEYWORD
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zirconia, surface treatment, pockmark, veneering materials, TESCERATMATL, shear bond strength, implant prosthesis
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