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不同最终冲洗方案后根管牙本质封闭剂的渗透情况:一项共聚焦激光扫描显微镜研究

Tubular dentin sealer penetration after different final irrigation protocols: A confocal laser scanning microscopy study.

作者信息

Machado Ricardo, Cruz Alessandra Timponi Goes, de Araujo Bianca Marques de Mattos, Klemz Adriane Antoniw, Klug Hellen Pontes, da Silva Neto Ulisses Xavier

机构信息

Clinical Practice Limited to Endodontics, Navegantes, Santa Catarina, Brazil.

Department of Endodontics, School of Life Sciences, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil.

出版信息

Microsc Res Tech. 2018 Jun;81(6):649-654. doi: 10.1002/jemt.23019. Epub 2018 Mar 23.

Abstract

The aim of this study was to evaluate tubular dentin sealer penetration, comparing different final irrigation protocols using a conventional needle (CONV), EndoActivator system (EAS), EndoVac system (EVS), and ultrasound (PUI). Initially, fifty-two first maxillary molars with a single canal in the palatal root, without abrupt curvatures, resorptive processes, or previous endodontic treatment were selected for this study. Then, the crowns were sectioned to obtain palatal roots 15 mm in length. The root canals were prepared with the ProTaper Universal System and irrigated with 5% NaOCl. Afterwards, the specimens were divided into four groups (n. 13), according to the final irrigation protocol: CONV, EAS, EVS, and PUI. After filling, slices at 3 mm and 5 mm from the apex were obtained for analysis by confocal laser scanning microscopy. Two-way comparisons between the groups and the levels were performed with Games Howell's test (p < .05). Tubular dentin sealer penetration was higher at 5 mm compared with 3 mm from the apex (p < .05). The EAS group showed a higher percentage of tubular dentin sealer penetration, compared with the CONV group, at both levels. At 3 mm, there was no statistically significant difference among EAS, EVS, and PUI; however, these groups showed better performance, compared with the CONV group. At 5 mm, there was no statistically significant difference between the EAS and EVS groups, but both showed higher sealer penetration than the PUI group (p < .05). The EAS and EVS groups achieved better degrees of tubular dentin sealer penetration, compared with the other groups.

摘要

本研究的目的是评估根管牙本质封闭剂的渗透情况,比较使用传统针头(CONV)、EndoActivator系统(EAS)、EndoVac系统(EVS)和超声(PUI)的不同最终冲洗方案。最初,选择52颗上颌第一磨牙,其腭根为单根管,无明显弯曲、吸收过程或先前的牙髓治疗史,用于本研究。然后,将牙冠切开以获得长度为15 mm的腭根。使用ProTaper通用系统预备根管,并用5%次氯酸钠冲洗。之后,根据最终冲洗方案将标本分为四组(每组13个):CONV、EAS、EVS和PUI。充填后,从根尖3 mm和5 mm处获取切片,通过共聚焦激光扫描显微镜进行分析。组间和水平间的双向比较采用Games Howell检验(p < 0.05)。与根尖3 mm处相比,根尖5 mm处的根管牙本质封闭剂渗透更高(p < 0.05)。在两个水平上,EAS组的根管牙本质封闭剂渗透百分比均高于CONV组。在3 mm处,EAS、EVS和PUI组之间无统计学显著差异;然而,与CONV组相比,这些组表现更好。在5 mm处,EAS组和EVS组之间无统计学显著差异,但两者的封闭剂渗透均高于PUI组(p < 0.05)。与其他组相比,EAS组和EVS组实现了更好的根管牙本质封闭剂渗透程度。

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