Department of Prosthodontics, Peking University School and Hospital of Stomatology, Nandajie Haidian District, Beijing, PR of China.
J Adhes Dent. 2010 Feb;12(1):27-31. doi: 10.3290/j.jad.a17543.
To investigate whether the application of chlorhexidine in a two-step self-etching adhesive has an adverse effect on the immediate resin-dentin bond strength.
Different amounts of 20 wt% chlorhexidine digluconate were added directly to the Clearfil SE Bond primer to prepare mixtures of 4 different concentrations of chlorhexidine: 0.05 wt%, 0.1 wt%, 0.5 wt%, and 1.0 wt%. Sixteen extracted third molars were randomly divided into 4 groups. Each group corresponded to one of the 4 chlorhexidine concentrations. Each of the 16 teeth was sectioned into halves. One half was customarily bonded with Clearfil SE Bond without chlorhexidine, and the other half was bonded with Clearfil SE Bond containing different concentrations of chlorhexidine. Microtensile bond strengths were tested immediately after specimen preparation. The modes of fractures were examined under a stereomicroscope.
No significant difference of immediate resin-dentin bond strength was observed between the control groups and any of the experimental groups containing chlorhexidine (p > 0.05).
The addition of chlorhexidine to a two-step self-etching adhesive primer (Clearfil SE Bond primer) has no adverse effect on the immediate resin-dentin bond strength when the chlorhexidine concentration in the primer is lower than or equal to 1.0 wt%.
研究在两步自酸蚀黏结剂中应用洗必泰是否会对即刻牙本质黏结强度产生不利影响。
将不同浓度的 20wt%洗必泰葡萄糖酸酯直接添加到 Clearfil SE Bond 底漆中，制备出 4 种不同浓度的洗必泰混合物：0.05wt%、0.1wt%、0.5wt%和 1.0wt%。16 颗第三磨牙随机分为 4 组，每组对应于 4 种洗必泰浓度中的一种。每颗牙齿被分成两半，一半用不含洗必泰的常规 Clearfil SE Bond 黏结，另一半用含有不同浓度洗必泰的 Clearfil SE Bond 黏结。在制备标本后立即进行微拉伸黏结强度测试。在立体显微镜下检查断裂模式。
在对照组和任何含有洗必泰的实验组之间，即刻牙本质黏结强度均无显著差异（p＞0.05）。
当底漆中洗必泰浓度低于或等于 1.0wt%时，将洗必泰添加到两步自酸蚀黏结剂底漆（Clearfil SE Bond 底漆）中不会对即刻牙本质黏结强度产生不利影响。
