Singh Richa, Pushpa Shankarappa, Arunagiri Doraiswamy, Sawhny Asheesh, Misra Abhinav, Sujatha Ramamurthy
Senior Lecturer, Department of Conservative Dentistry and Endodontics, Rama Dental College, Hospital and Research Center, Kanpur, Uttar Pradesh, India.
Professor and Head, Department of Conservative Dentistry and Endodontics, Rama Dental College, Hospital and Research Center, Kanpur, Uttar Pradesh, India.
J Dent Res Dent Clin Dent Prospects. 2016 Fall;10(4):251-256. doi: 10.15171/joddd.2016.040. Epub 2016 Dec 21.
Maximum sealing ability or adhesion of endodontic sealers can be achieved after effective removal of the smear layer. Endodontic irrigants assist in adequate removal of the smear layer, improving the retention mechanism. The aim of this study was to evaluate the effect of two different root canal irrigation solutions (5.25% NaOCl followed by 17% EDTA and QMix) on the apical sealing ability of two different root canal sealers (MTA Fillapex and Adseal). Forty-six single-canal teeth were divided into 4 experimental groups of 10 teeth each and a positive and negative group of 3 teeth each. The root canals were prepared using step-back technique. The teeth in groups 1 and 2 were irrigated with 5.25% NaOCl followed by 17% EDTA and the teeth in groups 3 and 4 were irrigated with QMix. Finally all the teeth were flushed with sterile saline and dried using paper points. Obturation was accomplished by gutta-percha using lateral condensation technique. MTA Fillapex sealer was used in groups 1 and 3 whereas Adseal was used in groups 2 and 4. Dye penetration method was used to evaluate apical leakage. Data were analyzed with Kruskal-Wallis and Mann-Whitney tests using SPSS 14. Statistical significance was set at P < 0.05. Group 3 showed maximum amount of apical leakage (3.7±0.3 mm) whereas group 2 exhibited the least amount of apical leakage (2.1 ± 0.4 mm) among all the experimental groups. Significant differences were found in the amount of apical leakage between all the groups (P = 0.00001). Within the limitations of this study, 5.25% sodium hypochlorite followed by 17% EDTA and Adseal resulted in the best apical seal.
在有效去除玷污层后，可实现根管封闭剂的最大封闭能力或黏附性。根管冲洗剂有助于充分去除玷污层，改善封闭机制。本研究的目的是评估两种不同的根管冲洗液（5.25%次氯酸钠，随后用17%乙二胺四乙酸和QMix）对两种不同根管封闭剂（MTA Fillapex和Adseal）根尖封闭能力的影响。46颗单根管牙被分为4个实验组，每组10颗牙，以及一个阳性对照组和一个阴性对照组，每组各3颗牙。采用逐步后退技术预备根管。第1组和第2组的牙齿先用5.25%次氯酸钠冲洗，随后用17%乙二胺四乙酸冲洗，第3组和第4组的牙齿用QMix冲洗。最后，所有牙齿用无菌盐水冲洗并用纸尖干燥。采用侧向加压技术用牙胶进行根管充填。第1组和第3组使用MTA Fillapex封闭剂，第2组和第4组使用Adseal封闭剂。采用染料渗透法评估根尖微渗漏。使用SPSS 14软件进行Kruskal-Wallis和Mann-Whitney检验分析数据。设定统计学显著性水平为P < 0.05。在所有实验组中，第3组显示出最大量的根尖微渗漏（3.7±0.3毫米），而第2组的根尖微渗漏量最少（2.1±0.4毫米）。所有组之间的根尖微渗漏量存在显著差异（P = 0.00001）。在本研究的局限性范围内，5.25%次氯酸钠随后用17%乙二胺四乙酸和Adseal封闭剂产生了最佳的根尖封闭效果。
