Ertas Huseyin, Sagsen Burak
Departmentof Endodontics, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey.
Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
Scanning. 2015 Nov-Dec;37(6):393-8. doi: 10.1002/sca.21208. Epub 2015 Oct 19.
The aim of this study was to evaluate the effect of MTAD (a mixture of tetracycline isomer, an acid, and a detergent) and conventional irrigation agents on the apical leakage and push-out bond strength of root canal filling and to correlate the apical leakage and push-out bond strength. Root canals of 120 maxillary central incisors were prepared with a ProTaper file up to F3 and distributed to six groups. Saline, 1% NaOCl, 17% EDTA, 17% EDTA/1% NaOCl, and 2% chlorhexidine (CHX) solutions were used between each file change, and 5 mL of the same irrigating solution was used for the final flush. In the MTAD group, the root canals were irrigated with 1.3% NaOCl between each file and 5 mL of MTAD for the final flush. All the root canals were filled with AH Plus sealer and gutta-percha cones. Apical leakage was evaluated using a fluid transport system. After the apical leakage test, each tooth was prepared for the push-out assessment. The statistical analysis revealed that the irrigation solutions had no effect on the apical leakage of the root canal fillings (p = 0.258). The root fillings of the groups irrigated with MTAD showed significantly lower push-out bond strength values than the other groups (p < 0.001). These commonly used irrigating solutions did not affect the apical leakage of the root canal sealer. MTAD reduced the bond strength of the root canal sealer to the root canal dentin.
本研究的目的是评估MTAD（一种四环素异构体、一种酸和一种洗涤剂的混合物）和传统冲洗剂对根管充填根尖微渗漏及推出粘结强度的影响，并将根尖微渗漏与推出粘结强度相关联。用ProTaper锉将120颗上颌中切牙的根管预备至F3，并分为六组。每次更换锉之间使用生理盐水、1%次氯酸钠、17%乙二胺四乙酸（EDTA）、17%EDTA/1%次氯酸钠和2%氯己定（CHX）溶液，最后冲洗时使用5mL相同的冲洗液。在MTAD组中，每次更换锉之间用1.3%次氯酸钠冲洗根管，最后冲洗时用5mL MTAD。所有根管均用AH Plus封闭剂和牙胶尖充填。使用流体传输系统评估根尖微渗漏。根尖微渗漏测试后，对每颗牙齿进行推出粘结强度评估。统计分析显示，冲洗液对根管充填物的根尖微渗漏无影响（p = 0.258）。用MTAD冲洗的组的根管充填物的推出粘结强度值显著低于其他组（p < 0.001）。这些常用的冲洗液不影响根管封闭剂的根尖微渗漏。MTAD降低了根管封闭剂与根管牙本质之间的粘结强度。
