Comparative Evaluation of Push-Out Bond Strength & Adaptation of A Fiber Post Cemented with Biodentine, MTA & Resin Cement: An in Vitro Study.

Harakh Chand Baranwal, N. Kumar, Prachi Rani, J. Yadav
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Abstract

Aim of our study is to evaluate & compare the push-out bond strength and adaptation of a fiber post cemented with Biodentine, MTA, and dual-cure Resin cement. A total of thirty mandibular premolars with a single oval root canal were prepared and obturation was done by AH plus sealer and gutta-percha. The teeth were stored at 37 0C with 100% humidity for one day. The gutta-percha was removed by peeso reamer, leaving at least 4 mm of filling material, and post spaces were prepared by corresponding fiber post drill. The specimens were randomly distributed into (n=10) among each 3 groups. Glass fiber Posts were lutted with three different materials and coronally sealed with glass ionomer cement followed by stored in water for 24 h at 37 0 C. Each tooth was sectioned into 3 parts of 2-mm-thick slices in coronal, middle and apical zone. Push-out bond strength was measured with help of a universal testing machine and evaluated the adaptation by scanning electron microscope after 7 and 28 days. Statistical analysis was done by one-way anova and post hoc test. The push-out bond strength of dual-cure resin and Biodentine was non-significant but higher in comparison to Pro Root MTA. Dual cure resin cement and Biodentine also showed better surface adaptation to post in comparison to MTA. This present study showed that Biodentine can also be used for luting the fiber post as an alternative to dual-cure resin cement.
生物牙牙汀、MTA和树脂胶结纤维桩的外推结合强度及适应性比较研究。
我们研究的目的是评估和比较用生物牙牙定、MTA和双固化树脂水泥粘合纤维桩的推出强度和适应性。我们准备了30颗单椭圆形根管的下颌前磨牙,用AH +密封剂和杜仲胶进行封闭。在37℃、100%湿度下保存1天。用peeso铰刀去除杜仲胶,留下至少4mm的填充材料,用相应的纤维桩钻制备桩空间。标本随机分为3组(n=10)。将三种不同材料的玻璃纤维桩进行粘接,冠端用玻璃离子水门栓密封,37℃下保存24 h,每颗牙分别在冠、中、尖区切成3份2 mm厚的切片。在7天和28天后,用万能试验机测量推出粘结强度,用扫描电镜评价其适应性。统计分析采用单因素方差分析和事后检验。与Pro Root MTA相比,双固化树脂和Biodentine的推出结合强度无显著性差异,但高于Pro Root MTA。与MTA相比,双固化树脂水泥和Biodentine也表现出更好的表面适应性。本研究表明,生物牙汀也可以作为双固化树脂水泥的替代品,用于纤维桩的修复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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