Effect of natural cross-linkers incorporation in a self-etching primer on dentine bond strength
Effect of natural cross-linkers incorporation in a self-etching primer on dentine bond strength
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DOI：
10.1016/j.jdent.2012.08.015
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发表时间：
2012-12-01
影响因子：
4.4
通讯作者：
Tagami, Junji
中科院分区：
文献类型：
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作者：
Islam, Sofiqul;Hiraishi, Noriko;Tagami, Junji
目的：这项体外研究的目的是探讨在自酸蚀粘结剂的底漆中加入天然交联剂对树脂 - 牙本质粘结强度的影响。
方法：从拔除的人类磨牙制备平坦的牙本质表面，并使用以下自酸蚀底漆。将0.5%的橙皮苷（HPN）、0.5%的氯己定（CHX）或0.5%的葡萄籽提取物（GSE）加入到Clearfil SE底漆（可乐丽医疗公司）中，配制成三种实验性底漆。原始的SE底漆作为对照。在涂底漆之后，牙齿用Clearfil SE粘结剂粘结，用树脂复合材料修复，并在37℃的水中储存24小时。将粘结的样本切割成梁状，并进行微拉伸粘结测试（μTBS）。使用扫描电子显微镜（SEM）对牙本质表面进行失效分析和形态学评估。使用纳米压痕技术测量硬度（H）和弹性模量（EM），以检测粘结界面的机械性能。
结果：单因素方差分析显示，测试组和对照组之间在μTBS、H和EM方面存在显著差异（p < 0.001）。Tukey事后检验表明，与其他组相比，加入HPN显著提高了μTBS、H和EM（p < 0.006）。加入GSE的组与其他组相比，μTBS、H和EM显著降低（p < 0.006）；而加入CHX的组与对照组相比没有显示出任何统计学上的显著差异。
结论：在Clearfil SE底漆中加入HPN对即刻μTBS和粘结界面的机械性能有积极影响。（C）2012爱思唯尔有限公司。保留所有权利。
Objectives: The aim of this in vitro study was to investigate the effect of incorporation of natural cross-linkers into the primer of a self-etching adhesive on resin-dentine bond strength.Methods: Flat dentine surfaces were prepared from extracted human molar teeth and were applied with the following self-etching primers. The 0.5% hesperidin (HPN), 0.5% chlorhexidine (CHX) or 0.5% grape seed extract (GSE) was incorporated into Clearfil SE primer (Kuraray Medical, Inc.) to formulate three experimental primers. The original SE primer served as control. Following primer application, the teeth were bonded with Clearfil SE bond, restored with resin composite and stored in water for 24 h at 37 degrees C. The bonded specimens were sectioned into beams and subjected to micro tensile bond testing (mu TBS). Failure analysis and morphological evaluation of the dentine surfaces were performed using a scanning electron microscope (SEM). Hardness (H) and elastic modulus (EM) were measured using nano-indentation technique to examine the mechanical properties of the bonded interfaces.Results: One-way ANOVA showed significant differences in mu TBS, H and EM among the tested and control groups (p < 0.001). Tukey post hoc test revealed that incorporation of HPN significantly increased mu TBS, H and EM, when compared with the other groups (p < 0.006). The GSE-incorporated group significantly decreased mu TBS, H and EM, when compared with the other groups (p < 0.006); while CHX-incorporated group did not show any statistical significant difference when compared with the control group.Conclusion: Incorporation of HPN into Clearfil SE primer had a positive influence on the immediate mu TBS and mechanical properties of the bonded interface. (C) 2012 Elsevier Ltd. All rights reserved.