Effect of Surface Treatments on Micro-Shear Bond Strength of Componeer Brilliant and Resin Composite

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Suchart Wongkhantee
Rajda Noisombut
Parinya Tanawet

Abstract

The purpose of this study was to compare micro-shear bond strength of resin composite to Componeer Brilliant treated with different surface treatment methods and with or without silane coupling agent. Onehundred-eighty componeer Brilliant were divided into 12 groups of 15 specimens. Each group was subject to surface treatments as followed; no surface treatment (control), phosphoric acid, diamond bur, sandblast, diamond bur-phosphoric acid, sandblast-phosphoric acid. Every treated surface was further treated with or without silane coupling agent. Adhesive was applied on all specimens and bonded to resin composite. After polymerization, the specimens were thermocycledfor 500 cycles and subjected to micro-shear bond strength test with the Universal Testing Machine. Fracture mode of all specimen was examined under a stereomicroscope with 30x magnification. Morphological features of treated Componeer Brilliant surfaces were analyzed under SEM. Results showed that Componeer Brilliant treated with sandblast-phosphoric acid had the maximum bond strength (19.91±2.52 MPa), demonstrating significant difference when compared with control group (p-value <0.001). Control group showed the minimum bond strength (14.82±1.59 MPa). The bond strength in sandblast group, diamond bur-phosphoric acid group, and sandblast-phosphoric acid group were increased significantly (p-value< 0.05) when further treated with silane coupling agent. Most commonly found fracture mode was adhesive failure as determined by fracture analysis. SEM evaluation showed irregularities on surfaces after treatment with diamond bur and sandblast.

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Wongkhantee S, Noisombut R, Tanawet P. Effect of Surface Treatments on Micro-Shear Bond Strength of Componeer Brilliant and Resin Composite. Khon Kaen Dent J [Internet]. 2018 Dec. 28 [cited 2024 Dec. 22];21(2):107-19. Available from: https://he01.tci-thaijo.org/index.php/KDJ/article/view/163133
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