Effect of Self-Adhesive and Separate Etch Adhesive Dual Cure Resin Cements on the Bond Strength of Fiber Post to Dentin at Different Parts of the Root.
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引用次数: 0
Abstract
Objectives: Bonding of fiber posts to intracanal dentin is challenging in the clinical setting. This study aimed to compare the effect of self-adhesive and separate etch adhesive dual cure resin cements on the bond strength of fiber post to dentin at different parts of the root.
Materials and methods: This in-vitro experimental study was conducted on 20 single-rooted premolars. The teeth were decoronated at 1mm coronal to the cementoenamel junction (CEJ), and the roots underwent root canal treatment. Post space was prepared in the roots. Afterwards, the samples were randomly divided into two groups. In group 1, the fiber posts were cemented using Rely X Unicem cement, while in group 2, the fiber posts were cemented using Duo-Link cement, according to the manufacturer's instructions. The intracanal post in each root was sectioned into three segments of coronal, middle, and apical, and each cross-section was subjected to push-out bond strength test at a crosshead speed of 1mm/minute until failure. Push-out bond strength data were analyzed using independent t-test and repeated measures ANOVA.
Results: The bond strength at the middle and coronal segments in separate etch adhesive cement group was higher than that in self-adhesive cement group. However, the bond strength at the apical segment was higher in self-adhesive cement group compared to that in the other group. Overall, the bond strength in separate etch adhesive cement group was significantly higher than that in self-adhesive cement group (P<0.001).
Conclusions: Bond strength of fiber post to intracanal dentin is higher after the use of separate etch adhesive cement compared to self-adhesive cement.
目的:纤维桩与牙本质的粘接在临床上具有挑战性。本研究的目的是比较自粘和分离刻蚀双固化树脂胶合剂对牙根不同部位纤维桩与牙本质结合强度的影响。材料与方法:采用20颗单根前磨牙进行体外实验研究。在牙髓-牙釉质交界处(CEJ)冠状面1mm处进行装饰,根管治疗。柱子空间是在根部准备的。随后,将样本随机分为两组。第一组使用Rely X Unicem水泥对纤维桩进行胶结,第二组使用Duo-Link水泥对纤维桩进行胶结。将每根管内桩切成冠、中、尖三段,每段均以1mm/min的十字速度进行推出粘结强度试验,直至失效。推出粘结强度数据采用独立t检验和重复测量方差分析。结果:单独蚀刻粘接骨水泥组中、冠状段的粘接强度高于自粘接骨水泥组。然而,自粘水泥组在根尖段的结合强度高于另一组。综上所述,单独蚀刻粘接剂组纤维桩与牙本质的结合强度明显高于自粘接剂组(p结论:使用单独蚀刻粘接剂后纤维桩与牙本质的结合强度高于自粘接剂组。