过氧化氢或二氧化钛浓度对牙齿漂白效果的影响  

Influence of the concentration of hydrogen peroxide and titanium dioxide on the tooth bleaching effect

作　　者：鲁灵[1] 吉川一志 山本一世 罗傲翔 吴补领[1] 

机构地区：[1]南方医科大学口腔医学院,广东广州510515 [2]大阪齿科大学

出　　处：《广州医学院学报》2014年第3期53-57,共5页Academic Journal of Guangzhou Medical College

基　　金：大阪齿科大学院研究费;国家自然科学基金(81371137)

摘　　要：目的:观察增加过氧化氢的浓度,及添加二氧化钛催化剂对诊室漂白系统TION GC疗效的影响。方法:牛前牙被浸泡于液体沸腾产生的红茶染色液中7 d,作为变色标本。用TION诊室漂白系统以每7天漂白3次的频率漂白该变色标本。对照组漂白剂为TION凝胶,实验组漂白剂分别为TION凝胶混合等体积的35%过氧化氢和TION凝胶混合二氧化钛。该过程每7天1次共重复4次。用色度计ShadeEye检测标本颜色。测量结果转换成CIE L×a×b×色彩模式,使用色彩分析软件,以△E×ab值代表漂白前后的颜色差异。对第1次漂白之前和最后一次漂白之后的颜色变化进行了测量。使用单向方差分析和Tukey检验(P<0.01)对实验结果进行统计学分析。结果:第2,第3和第4次漂白前后色差值△E×ab的变化小于6.0,第1次漂白前后过氧化氢添加组和二氧化钛添加组大于6.0。结论:对于TION漂白系统,添加过氧化氢使得漂白效果得到少许提高,而添加二氧化钛漂白效果与实验组无明显差异。Objective：We evalvated increases in the concentration of hydrogen per oxide and a titanium dioxide catalyst influenced the efficacy of the TION in Office bleaching system（TION, GC,）. Bovine teeth were immersed for 7 days in a pigmentation liquid produced by boiling black tea, to discolor the specimens. Before bleaching treatment, the discolored specimens was measured using a colorimeter. Bleaching treatment was then done using the TION in office system. The color was measured again after the bleaching ,and for three more times. Thereafter, then every 7 days for three more times, in addition,the bleaching agent of the TION gel was mixed with an equal volume of 35% hydrogen peroxide, and bleaching was performed in the same way as for the controls （H2 O2-added group）. Using an experimentally produced reactor in which the volume of the titanium dioxide V-CAT contained in the reactor was doubled, bleaching was performed using the mixed gel of TION in the same way as for the controls （TiO2-added group）. Measurements were converted to CIE Lab, using color analysis software, and ΔE ab, which represents color differences before and after bleaching . The 4 color differences before and after each bleaching treatment, and color changes between the first measurement before bleaching and fourth measurement after bleaching were calculated. Measurements were tested using one-way layout analysis of variance and Tukey’s test （P〈0.01）. Changes in the color difference value ΔEab before and after treatment were significantly greater after the first treatment under each condition. Although changes in the value were less than 6.0 after the second, third, and fourth treatments in the controls, changes in the value were greater than 6.0 up to the second treatment in the H2 O2- and TiO2-added groups.

关 键 词：牙齿漂白 过氧化氢 二氧化钛 

分 类 号：R782[医药卫生—口腔医学]