过氧化脲治疗四环素牙的远期疗效

Efficacy of carbamide peroxide on tetracycline teeth

目的评价10%过氧化脲凝胶漂白剂家庭漂白(In-home bleaching)治疗四环素牙的远期临床效果.方法用含10%过氧化脲的凝胶漂白剂,通过可由患者自行取戴的漂白托盘治疗四环素牙,观察其脱色效果及牙色复原等变化情况.结果306例四环素牙患者漂白总满意率为86.6%;随访6个月的201例中,有14.9%于6个月后出现不同程度的颜色复原.1～2年后,仍有较高的满意率.其中30例,每隔2年做1次巩固治疗,随访11年临床效果良好.结论10%过氧化脲凝胶漂白剂治疗四环素牙是有效的方法,着色度越轻治疗效果越好,着色度越重治疗效果越差.同时,漂白治疗具有一定的复原性,坚持巩固治疗,远期效果令人满意.

Objective To evaluate the long-dated therapeutic dfficacy of carbamide peroxide on tetracycline teeth. Methods 10% carbamide peroxide was prepared as a bleaching solution for the treatment of tetracyclineteeth. 306 patients were treated with aspecial bleaching salver containing the solution for 7-10 h in aperiod of 10-30 d. The color changes of the teeth were observed. Follow up data were obtained in 201 patients. Results Effective rate of bleaching was 86. 6% in patients with tetracycline teeth. After following up for 6 months in 201 patients, 14. 6% of them returned to the original color of teeth, but there was still a high-rate of satisfaction after 1-2 years follow up, in which 30 patients received repeated therapy every two years for 11 years with satisfactory results. Conclusion 10% carbamide peroxide in the treatment of tetracycline teeth is an effective method. The lighter in teeth color, the better the effect of bleaching. But the therapeutic efficacy is instableand a long dated satisfaction can be obtained with repeated treatment.