单瓶型通用粘接剂在牙本质粘接中的应用评价  

Bonding performance of two single bottle universal adhesives to dentin

作　　者：胡炜 尹海 马岭 侯宝华 

机构地区：[1]南京第四五四医院修复科,江苏南京210002

出　　处：《口腔医学》2015年第11期915-917,924,共4页Stomatology

摘　　要：目的评价2种单瓶型通用粘接剂在自酸蚀模式下应用与牙本质的粘接强度以及纳米渗漏情况。方法制作40枚牙本质样本,分别使用Singlebond Universal和All-Bond Universal 2种单瓶型通用粘接剂在自酸蚀模式下处理牙本质表面,与复合树脂粘接制作粘接试件。各组粘接试件一半于24 h水储后(未老化)切割成细条,测试微拉伸粘接强度,另一半经受10 000次冷热循环后(老化)测试微拉伸粘接强度。数据以单因素方差分析和Tukey多重比较进行检验分析。各组代表性试件处理后以扫描电镜观察粘接界面,检测纳米渗漏情况。结果不论是否经过老化,2种粘接剂组均获得了较高的粘接强度值,但扫描电镜均能发现纳米渗漏存在。结论两种单瓶型通用粘接剂在自酸蚀模式下应用均能提供较好的粘接性能,但无法避免纳米渗漏的发生。Objective To evaluate dentin bond strength and nanoleakage of 2single bottle universal adhesives used in self-etch modes.Methods 40 flat dentin surfaces were prepared. Composite resin was lutinged on the dentin surface using 2 different adhesives（ Singlebond Universal,All-Bond Universal） in self-etch mode. Half bonding specimens were stored in water for 24 h（ not aging）,and half were subjected to 10,000 times thermocycling（ aging）. Then all the specimens were sectioned into composite / dentin beams to submit to microtensile bond strength（ μTBS） testing. Data were statistically analyzed by One-way ANOVA and Tukey＇s test（ α = 0. 01）. Respective adhesive interfaces and nanoleakage were evaluated by SEM. Results Both groups showed a μTBS more than 30 MPa. No significant difference existed between the 2 adhesives. 10,000 times thermocycling decreased μTBS of both adhesives. SEM showed nanoleakage in both groups. Conclusions The 2 adhesives provide high bond strength to dentin in self-etch mode. However,nanoleakage still exists.

关 键 词：粘接 牙本质 单瓶 自酸蚀 

分 类 号：R783.1[医药卫生—口腔医学]