In Vitro Bactericidal Activity of Photo-Irradiated Oxydol Products via Hydroxyl Radical Generation
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概要
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The oxidative power of hydroxyl radicals has been applied to disinfection systems for the purpose of oral hygiene by utilizing blue light-induced photolysis of hydrogen peroxide (H2O2) in our laboratory. In the present study, the bactericidal potential of blue light-irradiated oxydol products via hydroxyl radical generation was compared with that of 3% (w/v) H2O2. Eleven commercially available oxydol products were used in the present study. Even though a few of the products that contained ethanol, a hydroxyl radical scavenger, as an additive showed slightly lower hydroxyl radical yield as compared with 3% (w/v) H2O2, the blue-light irradiation of each oxydol product for 3 min showed similar or superior bactericidal activity against Staphylococcus aureus to that of 3% (w/v) H2O2. The results strongly suggest that any of the oxydol products tested in the present study can be used as a source of hydroxyl radicals for the disinfection technique developed in our laboratory.
著者
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OYAMADA Akira
Tohoku University
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Niwano Yoshimi
Tohoku University Graduate School Of Dentistry
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NAKAMURA Keisuke
Tohoku University Graduate School of Dentistry
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HAYASHI Eisei
Tohoku University Graduate School of Dentistry
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KANNO Taro
Tohoku University Graduate School of Dentistry
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SASAKI Keiichi
Tohoku University Graduate School of Dentistry
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IKAI HIROYO
Tohoku University Graduate School of Dentistry
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