【摘要】 目的:研究局部应用奥敏清牙齿脱敏剂对可乐酸蚀脱矿乳牙釉质再矿化的作用。方法:收集临床因滞留拔除的健康乳磨牙30颗,将每颗牙沿颊舌向和近远中向纵切成4个牙块,随机进入A、B、C、D组(n=30)。经碳酸饮料浸泡脱矿(10 min×10次/d×7 d)后,进行如下处理:A组(不处理)、B组(奥敏清牙齿脱敏剂处理)、C组(氟化物处理)、D组(奥敏清牙齿脱敏剂与氟化物联合处理),分别处理2 min×2次/d×7 d。用激光荧光龋探测仪(DIAGNOdent)记录各时间点的荧光值,扫描电镜(SEM)观察各组釉质表面形态。结果:与A组相比,再矿化处理后B、C、D组荧光值显著降低(P<0.01)。D组荧光值显著低于B、C组(P<0.05),而B、C两组无统计学差异(P>0.05)。SEM下经奥敏清牙齿脱敏剂或氟化物处理后表面均有一定沉积物。结论:奥敏清牙齿脱敏剂具有促乳牙脱矿釉质再矿化的作用,与氟化物联合应用具有加强协同作用。更多还原

【Abstract】 Objective:To study the effect of topical Minqing Ao dental desensitizer application on the remineralization of primary teeth enamel eroded by Cola. Method:30 retained human primary molars were collected at clinic.Each tooth was cut bucco-lingually and mesial-distally into four sections. These sections assigned randomly to one of four groups(n=30). The enamel slabs were first immersed into a carbonated acidic drink for demineralization treatment for seven days(10min×10 times/d),then they were treated as follows for seven days(2 min×2 times/d):Group A(unexposed to any product)、Group B(Minqing Ao dental desensitizer)、Group C(fluoride)、Group D(Minqing Ao dental desensitizer +fluoride). A laser fluorescence system(DIAGNOdent)was used to make a quantitative record,The morphological changes of surface were observed by scanning electron microscope(SEM). Result:Compared with group A after remineralization experiment,DIAGNOdent values of groups B、C and D decreased significantly(p<0.01). DIAGNOdent value of group D was lower than that of groups B and C(P <0.05),while there was no significant difference between the groups B and C(P >0.05). SEM showed the deposition on the enamel surface after treatment with Minqing Ao dental desensitizer or fluoridation. Conclusion:Minqing Ao dental desensitizer can promote the demineralized primary teeth enamel to be remineralized and improve the remineralizing effects with fluoride.更多还原