临床资料本组15例病员均确诊为四环素牙。年龄14～30岁。女性11人,男性4人,总计牙数90个。其中轻度变色38个,中度变色42个,重度变色12个。材料及方法 1、材料:采用古莎Druatill超微填料复合树脂,30％双氧水。 2、方法:即在脱色后涂层。轻度者脱色涂层一次完成,中,重度可脱色3～4次,然后涂层。 Clinical data The group of 15 patients were diagnosed tetracycline tooth. Age 14 to 30 years old. 11 females, 4 males, a total of 90 teeth. Among them, 38 were mildly discolored, 42 were moderately discolored, and 12 were heavily discolored. Materials and methods 1, material: using ancient Sharu Druatill ultrafine composite resin, 30% hydrogen peroxide. 2, method: after decolorization coating. Mild decolorization coating done in one, medium and heavy decolorization 3 to 4 times, and then coated.