Adhesion procedures for CAD/CAM indirect resin composite block: A new resin primer versus a conventional silanizing agent
Adhesion procedures for CAD/CAM indirect resin composite block: A new resin primer versus a conventional silanizing agent
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DOI：
10.1016/j.jpor.2019.09.004
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发表时间：
2020-07-01
影响因子：
3.6
通讯作者：
Yatani, Hirofumi
中科院分区：
文献类型：
--
作者：
Hagino, Ryosuke;Mine, Atsushi;Yatani, Hirofumi
目的：本研究的目的是使用两种类型的组合混合树脂复合材料，评估含有甲基丙烯酸甲酯 (MMA) 的树脂底漆和硅烷化剂对间接树脂复合材料块的粘合效果。方法：用氧化铝对 SHOFU BLOCK HC (Shofu) 样本进行喷砂，然后应用两种表面处理之一：CERA RESIN BOND (Shofu, 硅烷基团）或 HC 底漆（Shofu，MMA 基团）。使用 Solidex Hardura（SDH，Shofu）或 Ceramage Duo（CMD，Shofu）制成的树脂复合材料在水中储存 24 小时或 6 个月后测量微拉伸粘合强度 (mu TBS) 值（每组 n = 24）。通过扫描电子显微镜 (SEM) 观察 mTBS 测量后的断裂面以及树脂块/组合树脂界面。 结果：6 个月后，硅烷/SDH 组的粘合强度显着下降 (p < 0.001)，而 MMA 组在 24 小时或 6 个月后没有显着损失 (p = 0.99)。在 CMD 组中，硅烷组 (p < 0.001) 和 MMA 组 (p < 0.001) 6 个月后的粘合强度均显着降低，但后者仍表现出更高的粘合力。 SEM 图像表明，MMA 组断裂表面处的基体树脂被部分破坏，并且观察到断裂表面不均匀。结论：与硅烷处理相比，即使在长期老化后，含有 MMA 的底漆仍能与 CAD/CAM 树脂产生更强的结合。 (C) 2019 年日本口腔修复学会。由爱思唯尔有限公司出版。保留所有权利。
Purpose: The purpose of this study was to evaluate the effectiveness of both a resin primer containing methyl methacrylate (MMA) and a silanizing agent on bonding to indirect resin composite blocks, using two types of build-up hybrid resin composites.Methods: SHOFU BLOCK HC (Shofu) specimens were blasted with alumina, after which one of two surface treatments was applied: CERA RESIN BOND (Shofu, the Silane group) or HC primer (Shofu, the MMA group). Resin composites made using either Solidex Hardura (SDH, Shofu) or Ceramage Duo (CMD, Shofu) were built up and micro-tensile bond strength (mu TBS) values were measured after storage in water for either 24 h or 6 months (n = 24 per group). The fracture surfaces after mTBS measurements and the resin block/build-up resin interfaces were observed by scanning electron microscopy (SEM).Results: The bond strength of the Silane/SDH group significantly decreased after 6 months (p < 0.001), whereas in the MMA group there was no significant loss after 24 h or 6 months (p = 0.99). In the CMD group, the bond strength after 6 months was significantly lowered in both the Silane group (p < 0.001) and the MMA group (p < 0.001), but the latter still showed greater adhesion. SEM images demonstrated that the matrix resin was partially destroyed at the fracture surfaces of the MMA group and fracture surface unevenness was observed.Conclusions: A primer containing MMA produced stronger bonding to CAD/CAM resin even after long-term aging compared to a silane treatment. (C) 2019 Japan Prosthodontic Society. Published by Elsevier Ltd. All rights reserved.