Abdullah Huda Abbas, Al-Ibraheemi Zahraa Abdulaali, Hanoon Zanbaq Azeez, Haider Julfikar
Department of Conservative Dentistry, College of Dentistry, Tikrit University, Tikrit, Iraq.
Department of Conservative Dentistry, Faculty of Dentistry, University of Kufa, Najaf, Iraq.
Int J Dent. 2022 Jul 30;2022:2830299. doi: 10.1155/2022/2830299. eCollection 2022.
Forty-eight acrylic blocks having central holes with a nominal diameter of 4 mm and a depth of 2 mm were prepared. The holes of the acrylic blocks were filled with Biodentine, which was prepared following the guidelines provided by the manufacturer. Then, the specimens were divided into six groups ( = 8). Groups 1, 2, and 3, Tetric N-Ceram composite bonded to Biodentine with Tetric N-bond, Xeno V+, Bond Force bond, respectively. Group 4, 5, and 6, Filtek Z350 bonded to Biodentine with the same three adhesives. The specimens were placed in distilled water for 24 hours and tested for the SBS in a universal testing machine at a crosshead speed of 1 mm/min. The test data were listed in a table and independent samples -test and analysis of variance (ANOVA) were conducted as a part of the statistical analysis.
The Tetric N bonding agent achieved the highest SBS followed by Bond Force, and Xeno V and highly significant difference was found. On the other hand, an overall increase in the SBS values of the Tetric N-Ceram resin was noticed in comparison with the Filtek Z350 and the differences was statistically significant. Although the specimens failed in adhesive, cohesive and mixed fracture modes but the cohesive was found to be the dominant failure mode in all groups.
Among the tested bonding agents and resin composites, the Tetric N-Ceram composite bonded by Tetric N-bond self-etch adhesive with the Biodentine showed the highest SBS compared to the other combinations.
制备48个具有标称直径为4毫米、深度为2毫米的中心孔的丙烯酸块。丙烯酸块的孔用生物活性玻璃陶瓷（Biodentine）填充，其制备遵循制造商提供的指南。然后，将标本分为六组（每组 = 8）。第1、2和3组，分别用Tetric N-bond、Xeno V+、Bond Force粘结剂将Tetric N-Ceram复合材料粘结到生物活性玻璃陶瓷上。第4、5和6组，用相同的三种粘结剂将Filtek Z350粘结到生物活性玻璃陶瓷上。将标本置于蒸馏水中24小时，并在万能试验机上以1毫米/分钟的十字头速度测试剪切粘结强度（SBS）。测试数据列于表格中，并进行独立样本t检验和方差分析（ANOVA）作为统计分析的一部分。
Tetric N粘结剂的SBS最高，其次是Bond Force，Xeno V的SBS最低，且差异具有高度显著性。另一方面，与Filtek Z350相比，Tetric N-Ceram树脂的SBS值总体有所增加，且差异具有统计学意义。尽管标本在粘结、内聚和混合断裂模式下失效，但内聚是所有组中的主要失效模式。
在测试的粘结剂和树脂复合材料中，与其他组合相比，用Tetric N-bond自酸蚀粘结剂粘结生物活性玻璃陶瓷的Tetric N-Ceram复合材料显示出最高的SBS。
