Influence of activation mode of dual-cured resin composite cores and low-viscosity composite liners on bond strength to dentin treated with self-etching adhesives.
Influence of activation mode of dual-cured resin composite cores and low-viscosity composite liners on bond strength to dentin treated with self-etching adhesives.
复制标题
双固化树脂复合核和低粘度复合衬的活化方式对自酸蚀粘合剂处理牙本质粘结强度的影响。
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
J. Tagami
中科院分区：
文献类型：
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作者：
M. Giannini;M. D. De Goes;T. Nikaido;Y. Shimada;J. Tagami
目的
本研究的目的是调查光或化学引发的双重固化的复合核心构建材料（CM）的聚合反应的影响，其剪切粘结强度与自酸蚀粘合剂（SE）处理的牙本质，在存在或不存在的低粘度复合衬垫（LI）。
材料和方法
测试了两种SE（Clearfil SE粘合剂和Unifil芯粘合剂）、其各自的CM（DC芯糊剂和Unifil芯）和LI（保护衬垫F）。去除8个牛切牙的唇侧釉质表面后，将每个平坦的牙本质表面切成具有相似表面积（30mm2）的4片。牙本质表面用600目碳化硅砂纸湿磨，随机分为8组。实验组包括使用SE及其相应的CM，有或没有LI的中间应用，有或没有CM光激活。使用聚乙烯管模具，将三个CM圆柱体（0.5 mm高和0.75 mm直径）应用于每个粘结的牙本质表面（n = 12）。在水储存24 h后，对试样进行微剪切试验。数据通过双因素方差分析和Tukey检验（5%）进行统计学分析。
结果
对于两种SE，LI应用和CM光活化显示出比其中不使用中间LI或仅化学固化CM的组显著更高的粘结强度。
结论
如果不使用LI和光活化，则使用SE的CM与牙本质的粘结强度降低。
PURPOSE
The objective of this study was to investigate the effect of light- or chemical initiation on the polymerization reaction of dual-cured composite core buildup materials (CM) with respect to their shear bond strength to dentin treated with self-etching adhesives (SE), in the presence or absence of a low-viscosity composite liner (LI).
MATERIALS AND METHODS
Two SEs (Clearfil SE Bond and Unifil Core Bond), their respective CMs (DC Core Paste and Unifil Core), and a LI (Protect Liner F) were tested. After removing the labial enamel surfaces of 8 bovine incisors, each flat dentin surface was sectioned into 4 pieces with similar surface areas (30 mm2). The dentin surfaces were wet abraded with 600-grit SiC paper and randomly divided into 8 groups. Experimental groups comprised the use of a SE and its respective CM with or without an intermediate application of the LI and with or without CM light activation. Three cylinders of CM (0.5 mm high and 0.75 mm in diameter) were applied to each bonded dentin surface (n = 12), using a tygon tubing mold. After water storage for 24 h, specimens were subjected to microshear testing. Data were statistically analyzed by two-way ANOVA and Tukey's test (5%).
RESULTS
For both SEs, LI application and CM light activation showed significantly higher bond strengths than the groups in which an intermediate LI was not used or the CMs were only chemically cured.
CONCLUSION
The bond strength of CM to dentin using SE is reduced if the LI and light activation are not employed.