Gul Pinar, Altınok-Uygun Latife
Department of Restorative Dentistry, Faculty of Dentistry, Atatürk University, Erzurum, Turkey.
Graduate Department of Restorative Dentistry, Faculty of Dentistry, Atatürk University, Erzurum, Turkey.
J Adv Prosthodont. 2020 Jun;12(3):131-139. doi: 10.4047/jap.2020.12.3.131. Epub 2020 Jun 18.
The purpose of this study is to evaluate the repair bond strength of a nanohybrid resin composite to three CAD/CAM blocks using different intraoral ceramic repair systems.
Three CAD/CAM blocks (Lava Ultimate, Cerasmart, and Vitablocks Mark II) were selected for the study. Thirty-two specimens were fabricated from each block. Specimens were randomly divided into eight groups for the following different intraoral repair systems: Group 1: control group (no treatment); Group 2: 34.5% phosphoric acid etching; Group 3: CoJet System; Group 4: Z-Prime Plus System; Group 5: GC Repair System; Group 6: Cimara System; Group 7: Porcelain Repair System; and Group 8: Clearfil Repair System. Then, nanohybrid resin composite (Tetric Evo Ceram) was packed onto treated blocks surfaces. The specimens were thermocycled before application of repair systems and after application of composite resin. After second thermal cycling, blocks were cut into bars (1 × 1 × 12 mm) for microtensile bond strength tests. Data were analyzed using two-way ANOVA and Tukey's HSD test (α=.05).
Cimara System, Porcelain Repair, and Clearfil Repair systems significantly increased the bond strength of nanohybrid resin composite to all CAD/CAM blocks when compared with the other tested repair systems (<.05). In terms of CAD/CAM blocks, the lowest values were observed in Vitablocks Mark II groups (<.05).
All repair systems used in the study exhibited clinically acceptable bond strength and can be recommended for clinical use.
本研究旨在评估使用不同口腔内陶瓷修复系统时，纳米混合树脂复合材料与三种CAD/CAM块体之间的修复粘结强度。
选择三种CAD/CAM块体（Lava Ultimate、Cerasmart和Vitablocks Mark II）进行研究。每个块体制备32个标本。标本随机分为八组，用于以下不同的口腔内修复系统：第1组：对照组（不处理）；第2组：34.5%磷酸酸蚀；第3组：CoJet系统；第4组：Z-Prime Plus系统；第5组：GC修复系统；第6组：Cimara系统；第7组：瓷修复系统；第8组：Clearfil修复系统。然后，将纳米混合树脂复合材料（Tetric Evo Ceram）填充到处理过的块体表面。在应用修复系统之前和应用复合树脂之后，对标本进行热循环处理。第二次热循环后，将块体切成条（1×1×12mm）进行微拉伸粘结强度测试。使用双向方差分析和Tukey's HSD检验（α = 0.05）分析数据。
与其他测试的修复系统相比，Cimara系统、瓷修复系统和Clearfil修复系统显著提高了纳米混合树脂复合材料与所有CAD/CAM块体之间的粘结强度（P < 0.05）。就CAD/CAM块体而言，Vitablocks Mark II组的值最低（P < 0.05）。
本研究中使用的所有修复系统均表现出临床上可接受的粘结强度，可推荐用于临床。
