Arıcan Burçin, Berkdemir Nihan, Özalp Koca Ayşe Tuba, Kemeç Utku Can, Özyürek Taha
School of Dental Medicine, Department of Endodontics, Bahçeşehir University, Istanbul, Turkey.
BMC Oral Health. 2025 Apr 7;25(1):502. doi: 10.1186/s12903-025-05853-2.
This study evaluated the effectiveness of various irrigation techniques, including iVac, passive ultrasonic irrigation (PUI), Pulp Sucker (PS), EDDY and conventional syringe irrigation (CSI), in removing calcium hydroxide (CH) from simulated internal resorption defects.
Seventy maxillary central incisors with straight, single-rooted canals were selected. Root canal preparation was completed using instrumentation up to an apical size of 40/.04. Each tooth was split longitudinally along the bucco-lingual axis, and artificial internal resorption cavities were created 5 mm from the apex. These cavities were filled with CH paste, and the two halves of each root were bonded together using cyanoacrylate adhesive. The canals were then fully packed with CH. The specimens were divided into five experimental groups, each subjected to a different irrigation protocol: EDDY, PS, CSI, PUI, and iVac. Irrigation included sequential use of 2% sodium hypochlorite, 17% EDTA, and distilled water, with a total of 30 mL used over 4 min for each sample. The percentage of CH removed was assessed, and the data were analyzed statistically at a 5% significance threshold.
All tested techniques left CH remnants within the simulated internal resorption defects. PUI and EDDY achieved significantly greater CH removal compared to PS, CSI, and iVac (p < 0.05). However, no significant difference was found between PS and CSI (p > 0.05).
Complete removal of CH from internal resorption cavities is challenging. However, PUI and EDDY showed superior efficacy and should be preferred over conventional syringe irrigation, iVac, and Pulp Sucker to optimize CH removal.
本研究评估了多种冲洗技术，包括iVac、被动超声冲洗（PUI）、牙髓吸引器（PS）、EDDY和传统注射器冲洗（CSI），在从模拟内吸收缺损中去除氢氧化钙（CH）方面的有效性。
选择70颗上颌中切牙，其根管笔直且为单根管。使用器械完成根管预备，直至根尖尺寸达到40/.04。沿颊舌轴将每颗牙齿纵向劈开，在距根尖5mm处制作人工内吸收腔。这些腔隙用CH糊剂填充，并用氰基丙烯酸酯粘合剂将每个牙根的两半粘结在一起。然后将根管完全用CH充填。标本分为五个实验组，每组接受不同的冲洗方案：EDDY、PS、CSI、PUI和iVac。冲洗包括依次使用2%次氯酸钠、17%乙二胺四乙酸（EDTA）和蒸馏水，每个样本在4分钟内共使用30mL。评估CH去除的百分比，并在5%显著性阈值下对数据进行统计学分析。
所有测试技术在模拟内吸收缺损内均残留有CH。与PS、CSI和iVac相比，PUI和EDDY实现了显著更高的CH去除率（p<0.05）。然而，PS和CSI之间未发现显著差异（p>0.05）。
从内吸收腔中完全去除CH具有挑战性。然而，PUI和EDDY显示出更高的疗效，与传统注射器冲洗、iVac和牙髓吸引器相比，应优先选择以优化CH的去除。
