两种脉冲的Er:YAG联合自酸蚀粘接剂对窝沟封闭的影响

The Evaluation of Pit and Fissure Sealants Prepared by Er:YAG of Different Pulse Combined with Self-etching Adhesives

目的:从微渗漏角度探究两种脉冲的Er:YAG激光联合自酸蚀粘接剂对于窝沟封闭的影响。方法:50颗离体牙随机分为5组,每组10颗,第1组:传统磷酸蚀刻处理窝沟釉质表面;第2组:MSP(最短脉冲)模式下的激光处理窝沟釉质表面;第3组:MSP+自酸蚀粘接系统处理窝沟釉质表面;第4组:SP(短脉冲)模式下的激光处理窝沟釉质表面;第5组:SP+自酸蚀粘接系统处理窝沟釉质表面。然后对所有组进行封闭剂充填。最后用体视显微镜进行微渗漏的观察。结果:两种脉冲的激光比较,差异无统计学意义(P>0.05);对照组与激光组比较,差异有统计学意义(P<0.05);对照组与激光+自酸蚀组比较,差异无统计学差异(P>0.05)。结论:激光脉冲对窝沟封闭微渗漏无影响,单独使用激光不能代替全酸的作用,但是联合使用自酸蚀粘接系统能达到传统方法的效果,有望应用于临床。

Objective：This study was to investigate the marginal microleakage in the fissure sealants that conditioned with two kinds of pulse Er：YAG laser combined with self-etching adhesives.Methods：In this study,50 teeth were divided into 5groups.（1）acid etching,（2）Er：YAG（MSP）,（3）Er：YAG（MSP）＋acid etching,（4）Er：YAG（SP）,（5）Er：YAG（SP）＋acid etching.All of the five groups were filled with fissure sealants.The microleakage tests were performed,observed and scored under stereomicroscope.Results：There was no difference between these two pulses groups（P0.05）.The laser group had higher microleakage than the acid etching group（P0.05）.There was no difference between the acid etching group and the Er：YAG laser＋self-etching adhesives group.Conclusions：The pulses＇ differences didn＇t affect the amount of microleakage.Only combined with self-etching adhesives,the Er：YAG laser can make the same amount microleakage with the acid etching in the fissure sealants.There is possibility to apply this combination to the patients.