P-74 アパタイト光触媒を利用した漂白に関するモデル研究(器械・技術,一般講演(ポスター発表),第60回日本歯科理工学会学術講演会(創立30周年記念大会))

概要

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The purpose of this study is to investigate the effect of bleaching agents with hydrogen peroxide and apatite photocatalyst on the stained HAP ceramics. The specimen surface was covered with the bleaching agent, and then visible light was irradiated with halogen unit. Color changes of specimen surface were measured before and after bleaching and evaluated with the CIE L*a*b* color system. All of the L* and b* values were considerably changed by bleaching. It was found that also in the case of low-concentration hydrogen peroxide (5%), high bleaching effect on the specimen surface was observed. Thus, these results suggest that the bleaching agents with apatite photocatalyst could bleach stained teeth with visible light irradiation, using diluted hydrogen peroxide.
2012-09-25