Lima Darlon Martins, Linhares Thátyla Silva, Lima Suellen Nogueira Linares, Carvalho Edilausson Moreno, Loguercio Alessandro Dourado, Bauer José, Carvalho Ceci Nunes
Department of Dentistry I, School of Dentistry, University Federal of Maranhão, São Luis, Maranhão 65080-805, Brazil.
Department of Restorative Dentistry, School of Dentistry, Ceuma University (Uniceuma), São Luis, Maranhão 65065-470, Brazil.
Materials (Basel). 2019 Jun 14;12(12):1930. doi: 10.3390/ma12121930.
The aim of this study was to evaluate the influence of a sonic application of self-adhesive resin cements on the bond strength of glass fiber posts to root dentin. Eighty bovine incisors were randomly divided into eight groups ( = 10). Four self-adhesive resin cements were used-RelyX U200 (3M/ESPE), Bifix SE (Voco), seT PP (SDI), and Panavia SA (Kuraray). The cements were inserted into the root canal in two different modes-Centrix syringe (control) or with a sonic device (Sonic Smart). The roots were sectioned and taken to a universal test machine (Instron 3342) to perform the push-out test. The fracture pattern was evaluated by stereomicroscope and scanning electron microscope. The bond strength data were analyzed by two-way ANOVA and Tukey tests (α = 0.05). The interaction between the main factors was significant ( = 0.002). The sonic application increased the bond strength in comparison with the conventional application for the RelyX U200 (p < 0.001) and Bifix SE (p < 0.017) cements. However, for the seT PP and Panavia SA cements, the bond strength values did not differ significantly ( > 0.05). The fracture pattern showed adhesive at the interface between the luting cement and the dentin. Using a sonic device in the application of self-adhesive resin cement helpedpromote an increase in the bond strength for RelyX U200 and Bifix SE.
本研究的目的是评估自粘结树脂水门汀的超声应用对玻璃纤维桩与牙根牙本质粘结强度的影响。80颗牛切牙随机分为8组（每组n = 10）。使用了四种自粘结树脂水门汀——RelyX U200（3M/ESPE）、Bifix SE（Voco）、seT PP（SDI）和Panavia SA（可乐丽）。水门汀以两种不同方式插入根管——Centrix注射器（对照）或使用超声设备（Sonic Smart）。将牙根切片并置于万能试验机（Instron 3342）上进行推出试验。通过体视显微镜和扫描电子显微镜评估断裂模式。粘结强度数据采用双向方差分析和Tukey检验（α = 0.05）进行分析。主要因素之间的交互作用显著（P = 0.002）。与RelyX U200（P < 0.001）和Bifix SE（P < 0.017）水门汀的传统应用相比，超声应用提高了粘结强度。然而，对于seT PP和Panavia SA水门汀，粘结强度值无显著差异（P > 0.05）。断裂模式显示粘结剂位于粘结水门汀与牙本质之间的界面处。在自粘结树脂水门汀应用中使用超声设备有助于提高RelyX U200和Bifix SE的粘结强度。
