The influence of light intensities irradiated directly and indirectly through resin composite to self-etch adhesives on dentin bonding
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概要
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This study was designed to evaluate effects of light-irradiated intensities directly and indirectly through resin composites to one- and two-step self-etch adhesives on dentin bonding. One-step (Clearfil S3 Bond; TS, Bond Force; BF) or two-step (Clearfil SE Bond; SE) self-etch adhesives was applied to dentin surface. The adhesive agent was light-cured with light-intensity of 350 or 600 mW/cm2, and then resin composite with different colors (translucent or opaque shade) was filled and light-cured with the same light-intensity as the bonding procedure. After 24 h water storage, bond strengths to dentin were determined using μTBS test. For the 600 and 350 mW/cm2 groups, translucent shade resin obtained higher μTBS than opaque shade resin. Using SE and BF, the 350 mW/cm2 group in translucent shade resin was higher μTBS than the 600 mW/cm2 group in opaque shade resin, while TS showed no different μTBS between them.
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