Dental and Periodontal Research Center, School of Dentistry, Tabriz University of Medical Sciences, Gholghasht Street, Tabriz, 5166614713, Iran,
Lasers Med Sci. 2015 Feb;30(2):653-9. doi: 10.1007/s10103-013-1391-5. Epub 2013 Jul 20.
This study compared the effects of two mechanical surface preparation techniques, air abrasion and Nd:YAG laser, with the use of two adhesive systems, self-etch and etch and rinse, on the repair bond strengths of an indirect composite resin. One hundred fifty cylindrical samples of an indirect composite resin were prepared and randomly divided into six groups (n = 25). In groups 1-3, the composite resin surfaces were respectively prepared as follows: no roughening, roughening by air abrasion, and roughening by Nd:YAG laser, followed by application of an etch-and-rinse adhesive. In groups 4-6, the preparation techniques were respectively the same as those in groups 1-3, followed by application of a self-etch adhesive. Subsequently, a direct composite resin was added and repair bond strengths were measured. Data were analyzed with two-way ANOVA and post hoc Tukey's test. Mean bond strength value was significant based on the preparation technique (P < 0.001), i.e., in air abrasion and Nd:YAG laser groups, bond strengths were significantly higher compared to no-preparation groups (P < 0.0005). There were significant differences in bond strength values between air abrasion and Nd:YAG laser groups, with significantly higher values in air abrasion groups (P < 0.0005). However, there were no significant differences in bond strength values between the adhesive systems. Furthermore, the cumulative effects of the adhesive system and the surface preparation technique were not significant. Surface preparation of the indirect composite resin with air abrasion and Nd:YAG laser resulted in a significant increase in the repair bond strength, with air abrasion being more effective. There were no significant differences in bond strength between the two adhesives.
本研究比较了两种机械表面处理技术，即喷砂和 Nd:YAG 激光，以及两种粘接系统，自酸蚀和酸蚀-冲洗，对间接复合树脂修复粘结强度的影响。制备了 150 个间接复合树脂的圆柱形样本，并将其随机分为六组（n=25）。在组 1-3 中，分别对复合树脂表面进行如下处理：不粗糙化、喷砂粗糙化和 Nd:YAG 激光粗糙化，然后应用酸蚀-冲洗型粘接剂。在组 4-6 中，处理技术分别与组 1-3 相同，然后应用自酸蚀粘接剂。随后添加直接复合树脂并测量修复粘结强度。使用双向方差分析和事后 Tukey 检验对数据进行分析。基于处理技术，平均粘结强度值具有统计学意义（P<0.001），即喷砂和 Nd:YAG 激光组的粘结强度明显高于未处理组（P<0.0005）。在喷砂和 Nd:YAG 激光组之间，粘结强度值存在显著差异，喷砂组的粘结强度显著更高（P<0.0005）。然而，在两种粘接系统之间，粘结强度值没有显著差异。此外，粘接系统和表面处理技术的累积效应没有统计学意义。用喷砂和 Nd:YAG 激光对间接复合树脂进行表面处理可显著提高修复粘结强度，其中喷砂更为有效。两种粘接剂之间的粘结强度没有显著差异。
