Abstract: ［Abstract］〓Objective〖HTSS〗〓To compare the recoloring effect of cold light whitening and inhome bleaching for dental fluorosis by the enamel adhesive binding.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓The 104 patients with moderate staining fluorosis were randomly divided into four groups:A,B, C and D, with 26 in each group, goup A cold light whitening+enamel adhesive, group B cold light whitening, group C inhome bleaching + enamel adhesive, group D inhome bleaching. After treatment, color change, tooth sensitivity and periodontal tissue stimulation were compared.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓After 3 months, the total effective rate of the four groups was 100.0%. After 12 months, group A is higher than group B,  group C is higher than group D, the difference is statistically significant(P＜005). There was no tooth sensitivity in group A and group C immediately after bleaching, 3 days after bleaching, 7 days, and 30 days. The sensitivity of teeth was higher in group B than in group A immediately after bleaching and 3 days after bleaching. The sensitivity of teeth was higher in group D than in group C immediately after bleaching and 3 days after bleaching, the difference is statistically significant(P＜005). There was no significant difference in tooth sensitivity rate 7 days and 30 days after bleaching in groups A and B, C and D(P＞005). There was no significant difference in gingival index in 4 groups after moderate fluorosis bleaching(P＞005).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓The use of enamel adhesive can effectively reduce the chance of recoloration and the sensitivity of air stimulation after moderate dental fluorosis by cold light whitening and family whitening.

Key words: fluorosis, dental, tooth bleaching, dental cements