Department of Endodontics, School of Dentistry, Grande Rio University, Rio de Janeiro, Rio de Janeiro, Brazil.
Department of Endodontics, Rio de Janeiro State University, Rio de Janeiro, Rio de Janeiro, Brazil.
J Endod. 2017 May;43(5):801-804. doi: 10.1016/j.joen.2016.12.007. Epub 2017 Mar 11.
The present study investigated the root canal dentin bond strength of 2 newly developed fast-setting mineral trioxide aggregate (MTA) and pozzolan-based cements: ENDOCEM MTA (Maruchi, Wonju, Korea) and ENDOCEM Zr (Maruchi). White MTA (Angelus, Londrina, Brazil) was used as the reference material for comparison.
Root slices (1 mm ± 0.1 mm) were obtained from the middle third of 15 maxillary incisors previously selected. Three canal-like holes (0.8 diameter) were drilled perpendicularly on the axial surface of each root slice. A standardized irrigation protocol was applied for all samples, and after drying, each hole was filled with 1 of 3 test repair materials. Finally, slices were stored in contact with phosphate-buffered saline solution (pH = 7.2) for 7 days at 37°C before the push-out assay. Data were nonparametrically evaluated at α = 5%.
The Friedman test was unable to confirm a significant dissimilarity in push-out ranks among the tested cements (P = .220).
The new fast-setting MTA and pozzolan-based cements ENDOCEM MTA and ENDOCEM Zr present suitable bond strength performance, which is comparable with white MTA.
本研究调查了两种新开发的快固矿化三氧化物聚合体（MTA）和基于火山灰的水泥的根管牙本质粘结强度：ENDOCEM MTA（韩国茂朱市马鲁奇）和 ENDOCEM Zr（马鲁奇）。将白色 MTA（巴西隆德里纳的安杰卢斯）用作比较的参考材料。
从之前选择的 15 颗上颌切牙的中部获得 1mm±0.1mm 的根切片。在每个根切片的轴面垂直钻 3 个类似根管的孔（直径 0.8）。对所有样本应用标准化冲洗方案，干燥后，将每个孔用 3 种测试修复材料之一填充。最后，将切片在 37°C 下与磷酸盐缓冲盐水（pH = 7.2）接触储存 7 天，然后进行推出试验。数据在 α=5%时进行非参数评估。
弗里德曼检验无法确认测试的水泥之间推出等级存在显著差异（P=0.220）。
新型快固 MTA 和基于火山灰的水泥 ENDOCEM MTA 和 ENDOCEM Zr 具有适宜的粘结强度性能，与白色 MTA 相当。
