University Medical Center Groningen (UMCG), Department of Periodontics and Conservative Dentistry, University of Groningen, the Netherlands.
J Adhes Dent. 2010 Aug;12(4):273-8. doi: 10.3290/j.jad.a17545.
The purpose of the study was to determine the microtensile bond strength of three different simplified adhesive systems to caries-affected dentin.
Fifteen extracted human molars with primary carious lesions were ground flat until dentin was exposed. Soft caries-infected dentin was excavated with the help of caries detector dye. On the remaining hard dentin, a standardized smear layer was created by polishing with 600-grit SiC paper. Teeth were divided into three groups and treated with one of the three tested adhesives: Adper Scotchbond 1 XT (3M ESPE), a 2-step etch-andrinse adhesive, Clearfil S3 Bond (Kuraray), a 1-step self-etching or all-in-one adhesive, and Clearfil SE Bond (Kuraray), a 2-step self-etching adhesive. Five-mm-thick composite buildups (Z-250, 3M ESPE) were built and light cured. After water storage for 24 h at 37ºC, the bonded specimens were sectioned into bars (1.0 x 1.0 mm; n = 20 to 30). Microtensile bond strength of normal dentin specimens and caries-affected dentin specimens was measured in a universal testing machine (crosshead speed = 1 mm/min). Data were analyzed using two-way ANOVA and Tukey's post-hoc test (p < 0.05).
No significant differences in bond strength values to normal dentin between the three adhesives were found. Adper Scotchbond 1 XT and Clearfil S3 Bond showed significantly lower bond strength values to caries-affected dentin. For Clearfil SE Bond, bond strength values to normal and caries-affected dentin were not significantly different.
All the tested simplified adhesives showed similar bond strength values to normal dentin. For the tested 2-step etch-and-rinse adhesive and the all-in-one adhesive, the bond strength values to caries-affected dentin were lower than to normal dentin.
本研究旨在确定三种简化的粘接系统对龋损牙本质的微拉伸粘接强度。
15 颗具有原发性龋损的人磨牙被磨平至暴露牙本质。在龋蚀探测器染料的帮助下，用挖器去除软龋感染牙本质。在剩余的硬牙本质上，用 600 目 SiC 砂纸抛光形成标准的玷污层。将牙齿分为三组，并用三种测试用粘接剂之一处理：Adper Scotchbond 1 XT（3M ESPE），两步酸蚀-冲洗型粘接剂；Clearfil S3 Bond（Kuraray），一步自酸蚀或全酸蚀粘接剂；Clearfil SE Bond（Kuraray），两步自酸蚀粘接剂。制备 5mm 厚的复合树脂堆（Z-250，3M ESPE）并进行光固化。在 37°C 下储存 24 小时后，将粘结的标本切成棒状（1.0x1.0mm；n=20 至 30）。在万能试验机（十字头速度=1mm/min）上测量正常牙本质和龋损牙本质标本的微拉伸粘接强度。使用双因素方差分析和 Tukey 事后检验（p<0.05）对数据进行分析。
三种粘接剂对正常牙本质的粘接强度值无显著差异。Adper Scotchbond 1 XT 和 Clearfil S3 Bond 对龋损牙本质的粘接强度值显著降低。对于 Clearfil SE Bond，正常牙本质和龋损牙本质的粘接强度值无显著差异。
所有测试的简化粘接剂对正常牙本质的粘接强度值相似。对于测试的两步酸蚀-冲洗型粘接剂和全酸蚀粘接剂，对龋损牙本质的粘接强度值低于对正常牙本质的粘接强度值。
