不同窝沟处理方法对窝沟封闭剂渗透程度和边缘微渗漏影响的体外研究  

Dental fissure treatments affected microleakage and penetration of sealants in vitro

作　　者：刘茜[1] 曹灵[1] 张耀国[1] 周红艳[1] 王珏[1] 袁俊[2] 梅予锋[1] 

机构地区：[1]南京医科大学口腔医学院儿童牙科,南京210029 [2]南京医科大学口腔医学院第四门诊部,南京210029

出　　处：《口腔医学》2010年第7期420-422,共3页Stomatology

摘　　要：目的体外比较不同的窝沟处理方法对窝沟封闭剂效果的影响。方法 50颗离体人类恒磨牙被随机分为5组,每组10颗。组1:低速杯状刷清洁并酸蚀(杯状刷组);组2:高速1/4球钻行窝沟釉质成形术并酸蚀(EST-Ⅰ);组3:高速极细金刚砂车针行窝沟釉质成形术并酸蚀(EST-Ⅱ);组4:激光清洁并酸蚀(激光组);组5:超声清洁并酸蚀(超声组)。窝沟封闭后,对封闭剂的渗透率及窝沟染料微渗漏进行测定。结果激光组封闭剂渗透率最低与低速杯状刷组、1/4球钻组及金刚砂车针组之间均有显著性差异(α<0.05)。激光组所有样本均出现染料渗漏,其微渗漏最严重,与其他4组均有显著性差异(α<0.05),1/4球钻组微渗漏发生最少,与金刚砂车针组、激光组以及超声组有显著性差异(α<0.05)。结论应用高速1/4球钻行窝沟釉质成形术并酸蚀后再进行窝沟封闭,具有较好的渗透性和边缘封闭性。Objective To determine the effects of different fissure surface treatments on the microleakage and penetration ability of fissure sealants on the occlusal surfaces of permanent molar teeth.Methods A total of 50 extracted human permanent molars were randomly divided into 5 groups of 10 teeth each group.Group1：with a slow-speed cup-shaped brush followed by acid etching; Group 2：high-speed handpiece by no1/4 round stainless steel bur was associated with acid etching; Group 3：high-speed handpiece by pointed diamond no230 and acid etching; Group 4：Er：YAG laser was associated with acid etching; and Group 5：an ultrasonic cleaning and acid etching.Microleakage and penetration ability were examined after sectioning.Results The penetration of the Er：YAG laser group was significantly less than that of the control groups,the 1/4 round bur group and the pointed diamond group（α〈005） .The mi-croleakage in the Er：YAG laser group was significantly more than that of the other 4 groups（α〈005） .The microleakage in the 1/4 round bur group was significantly less than that of the pointed diamond group,the Er：YAG laser group and the ultrasonic cleaning group （α〈005） .Conclusions These results suggest that the penetration and adaptation of the 1/4 round bur associated with acid etching were best,and it could be recommended for clinical use.

关 键 词：窝沟封闭 表面处理 微渗漏 渗透程度 

分 类 号：R780.1[医药卫生—口腔医学]