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首页> 外文期刊>Journal of dentistry >Effect of chlorhexidine on initial adhesion of fiber-reinforced post to root canal.
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Effect of chlorhexidine on initial adhesion of fiber-reinforced post to root canal.

机译：洗必太对纤维增强桩对根管的初始黏附的影响。

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OBJECTIVES: Chlorhexidine is used as final irrigant before endodontic obturation and fiber-reinforced composite posts are recommended for restoration retention. Our aim was to evaluate the effect of chlorhexidine on adhesion of cements used in post cementation. We hypothesized that chlorhexidine would not negatively affect the immediate bond strength. METHODS: Root canals of eighty human extracted third molars were prepared for post cementation with each post systems' own burs. Four commercially available FRC posts (Glassix, D.T.Light-Post, Unicore, everStickPOST) with three cements (Duo-link with All-bond 2, PermaFlo DC with PermaFlo DC Primers, RelyX Unicem) were used. After etching, except with self-etching RelyX Unicem, the post spaces were irrigated either with 2% chlorhexidine (Consepsis) or physiological saline for 60 s. With RelyX Unicem, respective treatments were done before cement application. The roots (n=5 per group) were cut into 2 mm thick dentin discs. The bond strength was measured with push-out method, and the failure mode was evaluated with a stereomicroscope. RESULTS: Significant differences in bond strength were observed between various post/cement combinations. Unicore/PermaFlo DC and everStickPOST/RelyX Unicem showed significantly higher bond strengths than Glassix or D.T.Light-Post with Duo-link both with saline and chlorhexidine. Chlorhexidine improved the bond strength slightly with all posts/cements except with D.T.Light-Post, but the differences were not statistically significant. With chlorhexidine, significant reduction of adhesive failures towards dentin cohesive or mixed failures was observed with all posts/cements except with everStickPOST. CONCLUSION: Chlorhexidine did not negatively affect the push-out bond strength in post bond cementation.
机译：目的：洗必泰在根管充填之前用作最终冲洗液，建议使用纤维增强的复合桩来保留牙根。我们的目的是评估洗必泰对后固井中所用水泥的粘合力的影响。我们假设洗必泰不会对即时粘合强度产生负面影响。方法：准备八十个人拔除的第三磨牙的根管，以便与每个桩系统自己的钻针进行水泥固定。使用了四个带有三种水泥的FRC立柱（Glassix，D.T.Light-Post，Unicore，everStickPOST）和三种水泥（Duo-link与All-bond 2，PermaFlo DC与PermaFlo DC Primers，RelyX Unicem）。蚀刻后，除了使用自动蚀刻的RelyX Unicem外，用2％的洗必泰（败血症）或生理盐水冲洗柱间隙60 s。使用RelyX Unicem，在水泥施用之前分别进行了处理。将根（每组n ＝ 5）切成2mm厚的牙本质盘。用推出法测量粘合强度，并用体视显微镜评价破坏模式。结果：在各种桩/水泥组合之间观察到粘结强度的显着差异。 Unicore / PermaFlo DC和everStickPOST / RelyX Unicem的结合强度明显高于带有Duo-link的Glassix或D.T.Light-Post和盐水和洗必泰。除D.T. Light-Post以外，洗必泰对所有桩/水泥的粘结强度都有轻微改善，但差异无统计学意义。使用洗必泰，除everStickPOST以外，所有其他岗位/水泥均观察到粘合失败明显减少，导致牙本质内聚或混合失败。结论：洗必泰在粘结后的胶结过程中对推顶粘结强度没有负面影响。

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