Final Endodontic Irrigation with 70% Ethanol Enhanced Calcium Hydroxide Removal from the Apical Third
Final Endodontic Irrigation with 70% Ethanol Enhanced Calcium Hydroxide Removal from the Apical Third
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DOI：
10.1016/j.joen.2020.09.017
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发表时间：
2021-01-01
影响因子：
4.2
通讯作者：
da Silva Brandao, Juliana Melo
中科院分区：
文献类型：
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作者：
de Lima Dias-Junior, Luiz Carlos;Castro, Roberta Fonseca;da Silva Brandao, Juliana Melo
简介：本研究的目的是评估尝试用不同冲洗液去除氢氧化钙敷料以及使用非活化冲洗或被动超声冲洗（PUI）后根管壁和牙本质小管的清洁度。方法：根管治疗后，80 颗单根牙用混合有丙二醇和 0.1% 罗丹明 B 染料的氢氧化钙填充，并用 Lentulo 螺旋插入根管。最初用 10 mL 盐水溶液去除氢氧化钙敷料，然后用主根尖锉重新安装。然后，根据有或无PUI的冲洗液将样品随机分为8个实验组（n=10）：2.5%次氯酸钠、17%乙二胺四乙酸+1.25%十二烷基醚硫酸钠（EDTA-T）、37%磷酸或70%乙醇。最后用 5 mL 盐水溶液进行冲洗。使用共焦激光扫描显微镜图像测量清洁根管壁的百分比和清洁牙本质小管的深度。使用方差分析检验的二元分析与用于深度分析的 Bonferroni 事后检验以及用于周长分析的 Kruskal-Wallis 与 Dunn 事后检验进行比较。结果：与使用 2.5% 次氯酸钠和 17% EDTA-T 冲洗相比，两种冲洗方法使用 70% 乙醇冲洗的清洁根管壁百分比和清洁牙本质小管深度均显着更高 (P < .05)。非激活冲洗或 PUI 方案之间没有观察到差异 (P > .05)。结论：与 2.5% 次氯酸钠或 17% EDTA-T 相比，70% 乙醇增强了顶根三分之一处氢氧化钙的去除。
Introduction: The purpose of this study was to evaluate the cleanliness of root canal walls and dentinal tubules after attempting to remove the calcium hydroxide dressing with different irrigant solutions and the use of nonactivated irrigation or passive ultrasonic irrigation (PUI). Methods: After root canal instrumentation, 80 single-rooted teeth were filled with calcium hydroxide mixed with propylene glycol and 0.1% rhodamine B dye and inserted into canals with a Lentulo spiral. The calcium hydroxide dressing was initially removed with 10 mL saline solution and reinstrumentation with the master apical file. Then, the samples were randomly assigned into 8 experimental groups (n = 10) according to the irrigant solution with or without PUI: 2.5% sodium hypochlorite, 17% ethylenediaminetetraacetic acid + 1.25% sodium lauryl ether sulfate (EDTA-T), 37% phosphoric acid, or 70% ethanol. A final flush with 5 mL saline solution was performed. The percentage of clean root canal walls and the depth of clean dentinal tubules were measured with images of confocal laser scanning microscopy. The groups were compared using the 2-way analysis of variance test with the Bonferroni post hoc test for depth analysis and the Kruskal-Wallis with Dunn post hoc test for the perimeter analysis. Results: Irrigation with 70% ethanol presented a significantly higher percentage of clean root canal walls and a higher depth of clean dentinal tubules when compared with irrigation with 2.5% sodium hypochlorite and 17% EDTA-T for both irrigation methods (P < .05). No differences were observed between nonactivated irrigation or PUI protocols (P > .05). Conclusions: Seventy percent ethanol enhanced calcium hydroxide removal from the apical root third compared with 2.5% sodium hypochlorite or 17% EDTA-T.