Ramazani Mohsen, Asnaashari Mohammad, Ahmadi Roghayyeh, Zarenejad Nafiseh, Rafie Alireza, Yazadani Charati Jamshid
Department of Endodontics, Sari Dental School, Mazandaran University of Medical Sciences.
Iranian Center For Endodontic Research , Research Institute of Dental Research, Department of Endodontics, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Iran Endod J. 2018 Winter;13(1):108-113. doi: 10.22037/iej.v13i1.17248.
This study aimed at comparing the effect of agitating the final irrigant solutions of root canal by ultrasonic or using 808 nm Diode laser on the apical seal of canal.
A total of 90 extracted human maxillary central incisors were prepared up to size #45 and were randomly assigned to 4 experimental groups (=20) and two control groups (=5) respectively, as follows: ): 3 mL of 5.25% NaOCl was agitated as final irrigant solution with ultrasonic for 30 sec. The ultrasonic tip was 1 mm shorter than the working length, ): 3 mL of 5.25% NaOCl was agitated as final irrigant with 808 nm Diode laser for 30 sec. Fiber tip, placed in 1 mm shorter from working length was spirally moved coronally, ): 3 mL of 17% EDTA was agitated as final irrigant with 808 nm Diode laser for 30 sec and was applied similar to group II, ): 3 mL of 17% EDTA was stimulated as final irrigant with ultrasonic for 30 sec and was applied similar to I. Apical seal was assessed by Dual Chamber technique using Bovine Serum Albumin protein. Kruskal-Wallis and Mann Whitney tests were used with significance level lower than 0.05% for statistical analysis.
The average leakage in the negative control, positive control, and groups I, II, III, IV were: 0.00, 13.5±5.1, 1.72±2.9, 5.12±5.6, 3.36±3.7, 2.4±4.2, respectively. Statistical analysis showed significant difference between groups (<0.05). There was a significant difference between groups 1 and 2 in terms of protein leakage
Agitating 5.25% sodium hypochlorite solution as the final irrigant with ultrasonic is more effective in apical leakage reduction compared to other groups.
本研究旨在比较超声或使用808纳米二极管激光搅拌根管最终冲洗液对根管根尖封闭的影响。
总共90颗拔除的人上颌中切牙预备至45号锉，并随机分为4个试验组（每组20颗）和2个对照组（每组5颗），如下：）将3毫升5.25%次氯酸钠作为最终冲洗液用超声搅拌30秒。超声探头比工作长度短1毫米，）将3毫升5.25%次氯酸钠作为最终冲洗液用808纳米二极管激光搅拌30秒。光纤头放置在比工作长度短1毫米处，向冠方螺旋移动，）将3毫升17%乙二胺四乙酸作为最终冲洗液用808纳米二极管激光搅拌30秒，并与第二组的应用方式相同，）将3毫升17%乙二胺四乙酸作为最终冲洗液用超声搅拌30秒，并与第一组的应用方式相同。使用牛血清白蛋白通过双腔技术评估根尖封闭情况。采用Kruskal-Wallis检验和Mann-Whitney检验进行统计分析，显著性水平低于0.05%。
阴性对照组、阳性对照组以及第一、二、三、四组的平均渗漏量分别为：0.00、13.5±5.1、1.72±2.9、5.12±5.6、3.36±3.7、2.4±4.2。统计分析显示各组之间存在显著差异（<0.05）。第一组和第二组在蛋白质渗漏方面存在显著差异。
与其他组相比，用超声搅拌5.25%次氯酸钠溶液作为最终冲洗液在减少根尖渗漏方面更有效。
