The effect of final irrigation with MTAD, QMix, and EDTA on smear layer removal and mineral content of root canal dentin
The effect of final irrigation with MTAD, QMix, and EDTA on smear layer removal and mineral content of root canal dentin
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DOI：
10.1002/jemt.23239
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发表时间：
2019-06-01
影响因子：
2.5
通讯作者：
Tanaskovic, Irena
中科院分区：
文献类型：
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作者：
Nogo-Zivanovic, Dajana;Kanjevac, Tatjana;Tanaskovic, Irena
比较初灌NaOCl和末灌MTAD、QMix和17% EDTA对根管牙本质涂抹层去除能力和矿物质含量的影响。选取40例在根管准备和NaOCl冲洗前拔除的上颌切牙，根据最终使用的冲洗剂类型随机分为4组（n = 10）： MTAD、QMix、17% EDTA和对照组（无菌蒸馏水）。用扫描电子显微镜（SEM）检查是否存在涂抹层。采用SEM能量色散x射线光谱法定量测定MTAD、QMix、17% EDTA组和未处理样品（未处理组，n = 10）的牙本质矿物组成。在不同的螯合剂中，在中间和冠状三分之一的涂抹层去除上，差异无统计学意义（p < 0.05）。在根尖三分之一，QMix比17% EDTA去除更多的涂片层（p < 0.05），但与MTAD相似（p < 0.05）。与EDTA相比，MTAD最终灌溉导致碳(C)值显著增加（p < 0.001）。MTAD组和QMix组之间的矿物组成没有显著差异，但MTAD组的矿物元素值有显著变化。QMix去除涂片层的能力与MTAD相似，但在根尖三分之一处优于EDTA。MTAD对根内牙本质矿物成分的影响最为显著；然而，只有C水平与17% EDTA相比差异显著。
To compare the smear layer removal ability and mineral content of root canal dentine after initial irrigation with NaOCl and final irrigation with MTAD, QMix, and 17% EDTA. Forty extracted human maxillary incisors before root canal preparation and irrigation with NaOCl were randomly divided into four groups (n = 10) according to the type of final irrigants used: MTAD, QMix, 17% EDTA, and control (sterile distilled water). Scanning electron microscopy (SEM) was used to assess the presence of smear layer. SEM energy-dispersive X-ray spectroscopy was used to quantify dentin mineral composition in MTAD, QMix, 17% EDTA group, and in no-treatment samples (no-treatment group; n = 10). Among the various chelating agents, there were no significant differences in the smear layer removal in the middle and coronal thirds (p > .05). In the apical third, QMix removed significantly more smear layer than 17% EDTA (p < .05), but similarly to MTAD (p > .05). Final irrigation with MTAD resulted in a significant increase in the carbon (C) value compared to EDTA (p < .001). There was no significant difference in the mineral composition between the MTAD and the QMix group, although the values of the mineral elements were significantly altered in the MTAD group. QMix had smear layer removal capability similar to MTAD but better than EDTA in the apical third. MTAD yielded the most pronounced effect on mineral component of root dentin; however, differences were significant only for C level compared to 17% EDTA.