摘要
目的探讨低浓度漂白剂配合使用含氟牙膏与否，对漂白后的牙釉质显微硬度和增白效果的影响。方法将20颗无缺损的离体磨牙随机分成A、B、C3组，A、B两组各8颗，C组4颗作为对照组，A、B两组的颊面采用6％过氧化脲（carbamideperoxide，CP）漂白，舌面采用30％CP漂白，每天漂白30min，持续2周，在此期间对B组牙用含氟牙膏刷牙，每天15min，随后将所有牙齿浸泡于37℃的人工唾液中，测定漂白前、后的牙齿的亮度值及釉质显微硬度，并进行统计学分析。结果两种漂白剂使用2周后对牙釉质的脱矿作用不明显（P〉0．05），含氟牙膏刷牙可增加漂白后牙釉质显微硬度（P〈0．05），但对漂白后的亮度无影响。结论漂白间歇期使用含氟牙膏刷牙，使过CP漂白术更为安全，且不影响漂白的效果。
Objective To evaluate the effect of fluorin dentifrice on the microhardness and whiting of dental enamel bleached with different concentration bleachers. Methods 6 % carbamide perox- ide （CP） and 30% CP were selected as bleachers. Twenty undefected molars were subjected to 3 groups. Groups A and B, which composed of 8 teeth each, were tested and group C was the control one. Group A （buceal surface） and group B （buccal surface） were treated with 6 % CP. Group A （lingual surface） and group B （lingual surface） were treated with 30 % CP. They were bleached 30 min every day for two weeks. The teeth in group B were brushed with fluorin dentifrice for 15 min after bleached every time and then all tested samples were kept in the artificial saliva at 37℃. Vickers microhardness of all teeth and color measurement of groups A and B were made before and at the end of bleaching procedure. Results The difference of microhardness values between the bleached and control samples were not statistically significant （P〉0.05）. Brushed with fluorin agent significantly increased the hardness of enamel in group B （P〈0.05）. The color change was not significant between bleached samples. Conclusion Using fluoride in the interphase of bleaching makes this therapy safer, and does not affect the whitening effect.
出处
《中华医学美学美容杂志》
2010年第1期29-32,共4页
Chinese Journal of Medical Aesthetics and Cosmetology
关键词
牙漂白
氟
显微硬度
色度
Tooth bleaching
Fluoride
Microhardness
Color
