【作者】 朱万春； 米长江； 米方林；

【Author】 Wanchun Zhu;Changjiang Mi;Fanglin Mi;Department of Stomotology,North Sichuan Medical University;

【机构】 川北医学院口腔医学系；

【摘要】 目的:评价一种新型通用型牙本质粘接剂对V类洞边缘的封闭效果。方法:40颗新拔除的正常双尖牙随机分为四组(n=10),分别在颊舌侧颈缘上1mm处制备标准的Ⅴ类洞(2×2×2mm),选用新型通用型粘接剂All Bond Universal(用全酸和自酸两种方法)以及全酸蚀粘接剂Prime&Bond NT、自酸蚀结剂G Bond作为对照组进行样本制备,经50wt%氨化硝酸银染色后,体式显微镜下观察边缘微渗漏的染色情况,记录评分结果,数据进行Kruskal-Wallis Test检验。结果:三种粘接剂均存在微渗漏现象,All Bond Universal的两种使用方法的微渗漏评分无显著性差异(P>0.05)。两两比较发现All Bond Universal组的微渗漏评分低于同种使用方法的对照组(P<0.05),龈方微渗漏整体评分高于(牙合)方(P<0.05)。结论:新型通用型牙本质粘接剂All Bond Universal是一种临床应用方便,有效的牙本质粘接剂,全酸蚀和自酸蚀两种方法对边缘微渗漏的影响没有差异,但其远期效果需要进一步实验研究。更多还原

【Abstract】 Objective:To evaluate the marginal microleakage of a new universal adhesive system in Class V resin composite restorations.Methods:Standardized Class V cavities(2×2×2mm) were prepared in 40 extracted premolars that were randomly assigned to 4 groups(n=10 for each group).Three adhesive systems:All Bond Universal(total-etch and self-etch),Prime& Bond NT and G bond and resin composite were applied to each group following manufactures’ instructions.The teeth were immersed in 50wt%ammoniacal silver nitrate and depth of penetration was evaluated under a microscope,and data were statistically analyzed by Kruskal-Wallis test.Results:Microleakage was observed in all groups.There is no difference between totaletch and self-etch when All Bond Universal is used(P>0.05).All Bond Universal(total-etch) scores were lower than Prime& Bond NT and self-etch scores were lower than G Bond(P<0.05).And higher microleakage scores were observed along the gingival margin than the occlusal margin in all groups(P<0.05).Conclusion:New universal adhesive All Bond Universal is a convenient and efficient adhesive.Pre-etch has no influence on marginal microleakage and the long-term effect need further study.更多还原