Agrawal Rashi, Tyagi Shashi Prabha, Nagpal Rajni, Mishra Chandrakar Chaman, Singh Udai Pratap
Department of Conservative Dentistry and Endodontics, Kothiwal Dental College and Research Center, Moradabad, Uttar Pradesh, India.
J Conserv Dent. 2012 Oct;15(4):377-82. doi: 10.4103/0972-0707.101917.
To evaluate the effect of different root canal irrigants on the sealing ability of two self-etch adhesives, using dye penetration method, within the pulp chamber.
72 extracted human molars were divided into six groups, according to the irrigant and self-etch adhesives used. After de-roofing the pulp chamber with a carborundum disc, the pulp was extirpated using excavator and broaches. In 36 samples, pulp chambers were bonded with Xeno V after irrigation with either 2% CHX (Group1: Xe-CHX) ; 17% EDTA + 5.25% NaOCl (Group2: Xe- EDTA + NaOCl) or normal saline (Group3: Xe-NS) and in other half samples, pulp chambers were bonded with Adper Easy One after irrigation with either 2% CHX (Group 4: Ad-CHX); 17%EDTA + 5.25% NaOCl (Group5: Ad-EDTA+NaOCl) or normal saline (Group 6: Ad-NS). All the samples were restored with Filtek Z350. Ten teeth from each group were assessed for dye penetration. Two samples in each group were viewed under scanning electron microscope to observe resin-dentin interfacial adaptation. Data was statistically analyzed using Mann-Whitney and Kruskal Wallis tests at a significance level of P < 0.05.
MEAN MICROLEAKAGE SCORES AND STANDARD DEVIATION OBSERVED WERE: Group 1 (Xe-CHX): 2.8 ± 0.42, Group 2 (Xe-EDTA + NaOCl): 2.3 ± 0.82, Group 3 (Xe-NS): 2.9 ± 0.31, Group 4 (Ad-CHX): 1.2 ± 0.91, Group 5 (Ad-EDTA + NaOCl): 0.8 ± 0.63, Group 6 (Ad-NS): 1.9 ± 0.99.
Adper Easy One showed significantly less leakage than Xeno V when normal saline was used as an irrigant. EDTA treatment followed by NaOCl application significantly reduced microleakage and improved the interfacial adaptation with Adper Easy One. CHX did not significantly affect the sealing ability of both one-step self-etch adhesives tested.
采用染料渗透法评估不同根管冲洗剂对两种自酸蚀粘结剂在髓腔内封闭能力的影响。
根据所使用的冲洗剂和自酸蚀粘结剂，将72颗拔除的人磨牙分为六组。用金刚砂盘去除髓室顶后，用挖匙和根管锉去除牙髓。在36个样本中，用2%氯己定（CHX）（第1组：Xe-CHX）、17%乙二胺四乙酸（EDTA）+5.25%次氯酸钠（NaOCl）（第2组：Xe-EDTA+NaOCl）或生理盐水（第3组：Xe-NS）冲洗后，用Xeno V粘结髓室；在另一半样本中，用2%CHX（第4组：Ad-CHX）、17%EDTA+5.25%NaOCl（第5组：Ad-EDTA+NaOCl）或生理盐水（第6组：Ad-NS）冲洗后，用Adper Easy One粘结髓室。所有样本均用Filtek Z350进行修复。每组选取10颗牙齿评估染料渗透情况。每组取两个样本在扫描电子显微镜下观察树脂-牙本质界面的适应性。数据采用Mann-Whitney检验和Kruskal Wallis检验进行统计学分析，显著性水平为P<0.05。
观察到的平均微渗漏评分及标准差为：第1组（Xe-CHX）：2.8±0.42，第2组（Xe-EDTA+NaOCl）：2.3±0.82，第3组（Xe-NS）：2.9±0.31，第4组（Ad-CHX）：1.2±0.91，第5组（Ad-EDTA+NaOCl）：0.8±0.63，第6组（Ad-NS）：1.9±0.99。
当使用生理盐水作为冲洗剂时，Adper Easy One的渗漏明显少于Xeno V。先用EDTA处理再用NaOCl冲洗可显著减少微渗漏，并改善Adper Easy One的界面适应性。CHX对所测试的两种一步法自酸蚀粘结剂的封闭能力均无显著影响。
