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目的评价不同漂白方法对氟斑牙漂白的临床效果。方法轻中度氟斑牙患者30例随机分为3组,每组10例60颗牙。分别采用联合漂白、激光漂白、家庭漂白3种方法进行上前牙区漂白,在漂白前、漂白后即刻、漂白后1个月、漂白后1年记录其L＊a＊b＊值,比较3组漂白效果及颜色回复情况。应用统计学分析软件CS10.34对数据进行t’检验。结果 3组漂白后的L＊a＊b＊值与漂白前比较差异均有统计学意义（均P〈0.05）;漂白后1个月,联合组与激光组颜色有所回复（P〈0.05）;漂白后1年,联合组、激光组颜色与漂白后即刻相比有所回复（P〈0.05）,与漂白后1个月相比颜色回复差异无统计学意义（P〉0.05）;家庭组颜色回复差异无统计学意义,但1个月到1年期间颜色变化小于治疗后即刻到1个月的变化（P〈0.05）。结论 3种漂白方案治疗1个疗程都得到相似的美白效果,但短期内也出现漂白牙的颜色回复,家庭漂白颜色相对稳定,诊室漂白收效快,3种治疗方案各有其适应人群。

Comparative study on the effect of different methods of bleaching on dental fluorosis

ObjectiveTo evaluate the clinical effects of different methods of bleaching on dental fluorosis.Methods Thirty patients with dental fluorosis were divided into 3 groups（Group A,B,C）randomly which were bleached by bleaching,laser bleaching and home bleaching,respectively. Each group contained 60 teeth. The changes of L＊a＊b＊ before bleaching,immediately after bleaching,1 month after bleaching and 1 year after bleaching were used to evaluate the effects of 3 groups.ResultsThe 3 methods showed the significant teeth bleaching effect immediately after bleaching.The teeth colour recovery had statistical difference between 1 month after bleaching and 1 year after bleaching in group A and B.The teeth colour recovery didn＇t have statistical difference between 1 month after bleaching and 1 year after bleaching in group C.ConclusionThe 3 methods have significant teeth bleaching effect,although the teeth colour can recover in short time. Home bleaching can provide a more stable effect.