不同牙面处理技术对窝沟封闭边缘密合性的影响  

Study on the Marginal Seal of Pit and Fissure Sealant with Different Procedure

作　　者：陈文玉[1,2] 钟圣纯[1,2] 台保军[3] 杜民权[3] 

机构地区：[1]湖南省人民医院口腔科 [2]湖南师范大学附属第一医院,湖南长沙410005 [3]武汉大学口腔医学院口腔预防科

出　　处：《口腔医学研究》2011年第6期498-500,共3页Journal of Oral Science Research

摘　　要：目的:以离体牙为研究对象,运用扫描电镜和激光共聚焦扫描显微镜观察不同牙面预备技术对窝沟封闭后边缘密合性的影响,为临床选择适宜的牙面预备技术提供实验依据。方法:60颗离体第三磨牙随机分为3组,每组20颗:A组,传统杯刷清洁(CST);B组,窝沟釉质成形术(EST);C组,非创伤性充填(ART);牙面处理后分别涂布窝沟封闭材料。将实验标本浸于罗丹明B溶液染色后采用激光共聚焦扫描显微镜观察标本微渗漏深度;采用扫描电镜观察封闭剂与牙釉质结合处的超微结构。结果:EST组所产生的微渗漏深度最低,其次是ART组,对照组所产生的微渗漏深度最高。扫描电镜下,EST组中窝沟封闭剂与牙釉质之间渗透性好,ART组和对照组中窝沟封闭剂与牙釉质之间渗透性较好。结论:研究表明不同牙面处理技术对窝沟封闭边缘密合性的影响有显著性差异。ART技术与CST技术相似,封闭剂与牙釉质的边缘密合性较好,为ART技术应用于窝沟封闭提供了有力的证据。Objective： To study effects of pit and fissure sealant with different procedures on the marginal seal in extracted teeth evaluated by scanning electronic microscope and laser scanning confocal microscope to provide lab evidence for clinic application.Methods： Sixty non-caries extracted human the third molars were randomly divided into three groups.Group A： conventional sealing technique;Group B： enameloplasty sealing technique;Group C： atraumatic restorative treatment.All the teeth were immersed in Rhodamine.After that,all the samples were evaluated under the laser scanning confocal microscope for the microleakage.Each group were analyzed by scanning electronic microscope for penetration ability of the fissure sealants.Results： Using different procedures,the lowest microleakage was generated by the EST group,followed by the ART group.Penetration ability was obviously observed by scanning electronic microscope in EST group,but it was lower in ART group and control group.Conclusion： Good sealant and the marginal seal is observed in both ART and CST which presents a reliable evidence for clinical application.

关 键 词：窝沟封闭 微渗漏 窝沟釉质成形术 非创伤性充填 

分 类 号：R788.1[医药卫生—口腔医学]