This in vitro study aimed to investigate the tubular penetration depth of four different sealers used with two different obturation methods in the apical, middle, and coronal root canal dentin. Eighty‐four single‐rooted teeth were instrumented until the F4 ProTaper universal rotary file and filled with AH26, AH Plus (Dentsply, DeTrey, Konstanz, Germany), RealSeal (SybronEndo, Orange, CA), and MTA Fillapex (Angelus, Londrina, Brazil) using cold lateral condensation (CLC) and single‐cone (SC) obturation techniques. Thereafter, the roots were sectioned longitudinal and prepared for scanning electron microscope evaluation. The maximum and minimum sealers penetration depth into dentinal tubules at the apical, middle, and coronal regions and the average depth of sealer penetration were calculated. The data was statistically analyzed two‐way ANOVA and post hoc Tukey and Dunnett tests and independent samples t test using maximum mean values. There was no statistically difference between the obturation methods (p > .05). When the sealers are evaluated within themselves AH26 was affected by obturation methods significantly (p < .05). Also the results revealed a significant difference between root regions (p < .05). AH26 and RealSeal root canal sealers had the highest penetration values with CLC and SC obturation techniques, respectively. The obturation method did not affect the penetration amount of root canal sealers. RealSeal root canal sealer performed better penetration ability than the other sealers. Apical third of the root in all groups showed lowest penetration depth.

中文翻译：

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不同充填方法使用的不同根管封闭剂的牙本质穿透能力比较。

这项体外研究旨在研究四种不同封闭剂在根尖、中间和冠状根管牙本质中使用两种不同的封闭方法的管状渗透深度。在 F4 ProTaper 通用旋转锉之前使用了 84 个单根牙，并用 AH26、AH Plus（Dentsply，DeTrey，Konstanz，德国）、RealSeal（SybronEndo，Orange，CA）和 MTA Fillapex（Angelus，Londrina，巴西）使用冷侧向冷凝（CLC）和单锥（SC）封闭技术。此后，将根纵向切片并准备用于扫描电子显微镜评估。计算了封闭剂在根尖、中间和冠部区域的牙本质小管中的最大和最小渗透深度以及封闭剂渗透的平均深度。使用最大平均值进行t检验。密闭方法之间没有统计学差异（p > .05）。当封闭剂在其自身内进行评估时，AH26 受到封闭方法的显着影响 ( p < .05)。结果还显示根区域之间存在显着差异 ( p < .05)。AH26 和 RealSeal 根管封闭剂分别在 CLC 和 SC 封闭技术中具有最高的渗透值。充填方法不影响根管封闭剂的渗透量。RealSeal 根管封闭剂比其他封闭剂具有更好的穿透能力。所有组中根的顶端三分之一表现出最低的穿透深度。