摘要
目的通过比较自酸和全酸粘接剂不同涂布次数对牙体粘接界面微渗漏的影响,探讨粘接剂的最佳涂布方式,评价不同粘接系统对牙体粘接界面微渗漏的影响。方法收集2019年10月—2019年11月我科拔除的第三磨牙35颗,在其颊舌侧釉牙骨质界冠方各制备1个尺寸统一的洞。随机分为7组(每组5颗,10个洞形),分别为A0组(空白对照组);B1组(自酸粘接剂涂布1次)、B2组(自酸粘接剂涂布2次)、B3组(自酸粘接剂涂布3次);C1组(全酸粘接剂涂布1次)、C2组(全酸粘接剂涂布2次)、C3组(全酸粘接剂涂布3次)。每组粘接剂的涂布方式按照操作要求进行,复合树脂充填窝洞。将所有样本牙浸泡于罗丹明B异硫氰酸盐的酒精溶液中24 h后用蒸馏水冲洗去净染料。沿颊舌方向于每个样本牙实验区域平行于牙体长轴连续切取2片,砂纸打磨试件至透光。应用激光扫描共聚焦显微镜测量微渗漏的长度并观察其形态的变化。结果与涂布1次、3次比较,自酸和全酸粘接剂在涂布2次时微渗漏值最低(P<0.05);两种粘接系统涂布相同次数时的微渗漏值比较差异无统计学意义(P>0.05)。结论自酸和全酸粘接系统涂布2次时边缘封闭效果最佳,而两种粘接系统的边缘封闭效果相当。
Objective To compare the effects of different coating times of auto-acid and total-acid adhesives on the micro-leakage at tooth adhesive interface,so as to explore the optimal coating method of adhesive and to evaluate the effects of different adhesive systems on the micro-leakage at tooth adhesive interface.Methods Thirty-five third molars extracted in our department from October 2019 to November 2019 were collected,and one hole of uniform size was prepared in the enamel osseous boundary crown at the buccal and lingual sides respectively.They were randomly divided into 7 groups(5 molars and 10 holes in each group),namely,A0 group(blank control group),B1 group(coated once with auto-acid adhesive),B2 group(coated twice with auto-acid adhesive),B3 group(coated three times with auto-acid adhesive),C1 group(coated once with total-acid adhesive),C2 group(coated twice with total-acid adhesive),C3 group(coated three times with total-acid adhesive).The adhesive coating of each group was carried out according to the operation requirements,and the holes were filled with composite resin.All sample teeth were immersed in the alcohol solution of rhodamine B isothiocyanate for 24 h and then rinsed with distilled water to remove the dye.Two pieces were cut continuously parallelling to the long axis of the tooth body from the experimental area of each sample tooth along the buccal and lingual directions,and the specimens were polished with sandpaper to be transparent.Laser scanning confocal microscopy(LSCM)was used to measure the length of the micro-leakage and to observe its morphological changes.Results Compared with coating once and three times,the micro-leakage values of auto-acid and total-acid adhesives were the lowest when coating twice(P<0.05).There was no significant difference in the micro-leakage values between the two adhesive systems when coated same times(P>0.05).Conclusion Auto-acid and total-acid adhesive systems have the best edge sealing effect when coated twice,but the two systems have the same edge sealing effect.
作者
陈海波
蒋文琼
邢慧妍
包小真
梁炎婷
邓敏
Chen Haibo;Jiang Wenqiong;Xing Huiyan;Bao Xiaozhen;Liang Yanting;Deng Min(Department of Stomatology,Affiliated Hospital of Youjiang Medical University for Nationalities,Baise 533000,Guangxi,China)
出处
《右江民族医学院学报》
2020年第4期477-480,共4页
Journal of Youjiang Medical University for Nationalities
基金
百色市科学研究与技术开发计划课题(百科20195410)。
关键词
粘接系统
涂布方式
微渗漏
粘接界面封闭性
adhesive system
coating method
micro-leakage
adhesive interface sealing
