Influence of light intensity on surface-free energy and dentin bond strength of single-step self-etch adhesives
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- NOJIRI Kie
- Department of Operative Dentistry, Nihon University School of Dentistry
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- TSUJIMOTO Akimasa
- Department of Operative Dentistry, Nihon University School of Dentistry
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- SUZUKI Takayuki
- Department of Operative Dentistry, Nihon University School of Dentistry
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- SHIBASAKI Syo
- Department of Operative Dentistry, Nihon University School of Dentistry
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- MATSUYOSHI Saki
- Department of Operative Dentistry, Nihon University School of Dentistry
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- TAKAMIZAWA Toshiki
- Department of Operative Dentistry, Nihon University School of Dentistry
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- MIYAZAKI Masashi
- Department of Operative Dentistry, Nihon University School of Dentistry
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In this study, we investigated the influence of light intensity on the surface-free energy and dentin bond strength of single-step selfetch adhesives. The adhesives were applied to the dentin surfaces of bovine mandibular incisors and cured with light intensities of 0 (no irradiation), 200, 400, and 600 mW/cm2. Surface-free energies were determined by measuring the contact angles of three test liquids placed on the cured adhesives. Dentin bond strengths of the specimens were also measured. Polymerization with a higher light intensity resulted in a lower surface-free energy of the cured adhesives. The greatest bond strength was achieved when a light intensity of 400 mW/cm2 or greater was used. Our data suggest that the surface-free energy and dentin bond strength of single-step self-etch adhesives are affected by light intensity of the curing unit.
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 34 (5), 611-617, 2015
日本歯科理工学会
