Buldur B, Kapdan A
Department of Pediatric Dentistry, Faculty of Dentistry, Cumhuriyet University, Sivas, Turkey.
Niger J Clin Pract. 2017 Sep;20(9):1168-1174. doi: 10.4103/1119-3077.181351.
This study aimed to compare the EndoVac system and conventional needle irrigation in removing smear layer (SR) from primary molar root canals.
Fifty extracted human primary second molar roots were instrumented up to an apical size of 0.04/35 and randomly divided into two main groups; Group 1: EndoVac system (n = 25) and Group 2: Conventional needle irrigation (n = 25) and three subgroups (a) NaOCl + ethylenediaminetetraacetic acid (EDTA) (n = 20) (b) ozonated water (OW) + EDTA (n = 20) and (c) saline (control, n = 10). After a standardized final irrigation protocol performed for all teeth, scanning electron microscope images were taken at ×1000 magnification for each thirds of each root canal. Data were analyzed by the weighted kappa, Kruskal-Wallis, and Wilcoxon signed rank tests.
EndoVac was more effective than conventional needle in the removal of SR from the apical third of the root canal system (P < 0.05). The OW + EDTA regimen provided similar SR removal compared with NaOCl + EDTA.
EndoVac has better performance than conventional needle irrigation in the removal of the SR in the apical thirds of the primary molar root canals. As a final irrigation regimen, the OW + EDTA regimen is as effective as the NaOCl + EDTA regimen.
本研究旨在比较EndoVac系统与传统针头冲洗在去除乳磨牙根管玷污层（SR）方面的效果。
选取50颗拔除的人乳磨牙牙根，预备至根尖尺寸0.04/35，随机分为两个主要组；第1组：EndoVac系统（n = 25），第2组：传统针头冲洗（n = 25），并进一步分为三个亚组：（a）次氯酸钠（NaOCl）+乙二胺四乙酸（EDTA）（n = 20），（b）臭氧水（OW）+ EDTA（n = 20），（c）生理盐水（对照组，n = 10）。对所有牙齿进行标准化的最终冲洗方案后，在×1000放大倍数下对每个根管的三分之一处拍摄扫描电子显微镜图像。数据采用加权kappa检验、Kruskal-Wallis检验和Wilcoxon符号秩检验进行分析。
在去除根管系统根尖三分之一处的SR方面，EndoVac系统比传统针头冲洗更有效（P < 0.05）。与NaOCl + EDTA相比，OW + EDTA方案在去除SR方面效果相似。
在去除乳磨牙根管根尖三分之一处的SR方面，EndoVac系统比传统针头冲洗性能更好。作为最终冲洗方案，OW + EDTA方案与NaOCl + EDTA方案效果相同。
