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首页> 外文期刊>Dental Materials Journal >In vitro evaluation of visible light-activated titanium dioxide photocatalysis for in-office dental bleaching
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In vitro evaluation of visible light-activated titanium dioxide photocatalysis for in-office dental bleaching

机译：体外可见光活化二氧化钛光催化对办公室内牙齿漂白的评估

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摘要

The evaluation of the photocatalysis of visible light activated titanium dioxide employed in hydrogen peroxide (H_(2)O_(2)) was carried using seven H_(2)O_(2) solutions (3.5 and 35%) and/or methylene blue (MB), with or without light irradiation (LI); the absorbance of MB was the bleaching indicator. Color analysis was performed on bovine teeth (n =12) using two different concentrations of H_(2)O_(2), 6 and 35% associated with titanium dioxide (TiO_(2)). Data were analyzed with one and two-way ANOVA, and significance level of p <0.05. Solutions containing MB, H_(2)O_(2) at 3.5 or 35%, and TiO_(2), followed by LI, showed significant difference when compared with other groups. Greater MB reduction was found in 35% concentration. H_(2)O_(2) 35%+TiO_(2) gel showed no difference in comparison to control group. All groups for the color analysis assay showed ΔE higher than 3.3. In conclusion, TiO_(2) and H_(2)O_(2) association is a promisor alternative for reducing the clinical time of in-office dental bleaching.
机译：使用七种H_（2）O_（2）溶液（3.5和35％）和/或亚甲基蓝（H_（2）O_（2））对可见光活化的二氧化钛（H_（2）O_（2））中的光催化性能进行评估。 MB），有无光照射（LI）; MB的吸光度是漂白指标。使用两种不同浓度的H_（2）O_（2），6％和35％的二氧化钛（TiO_（2））对牛牙齿（n = 12）进行颜色分析。用单向和双向方差分析分析数据，显着性水平为 p <0.05。与其他组相比，包含MB，H_（2）O_（2）为3.5或35％以及TiO_（2）和LI的溶液显示出显着差异。在35％的浓度下发现更大的MB减少量。 H_（2）O_（2）35％+ TiO_（2）凝胶与对照组相比无差异。用于颜色分析测定的所有组均显示出高于3.3的ΔE。总之，TiO_（2）和H_（2）O_（2）缔合是减少办公室内牙齿漂白临床时间的理想选择。

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