J Endod:DJK-5单独使用或结合EDTA对根管内单一或多物种生物膜抗菌效力的影响

2018-10-16 lishiting MedSci原创

这篇研究的目的是为了评估一种全新肽DJK-5单独使用或结合EDTA使用配合预先次氯酸钠(NaOCl)冲洗与否的情况下对覆盖一层玷污层根管内单一或多物种生物膜的抗菌性能。

这篇研究的目的是为了评估一种全新肽DJK-5单独使用或结合EDTA使用配合预先次氯酸钠(NaOCl)冲洗与否的情况下对覆盖一层玷污层根管内单一或多物种生物膜的抗菌性能。

研究使用112个牙本质块(224 final specimens)作为试验对象并分为56组,通过离心将粪肠球菌或混合菌导入牙本质小管内。培养1周后,牙本质块表面形成一层均匀的玷污层,随后将样本暴露在去离子水, 17% EDTA, 2%或6% NaOCl, 10 μg/mL DJK-5, 或8.5% EDTA +10 μg/mL DJK-5的混合溶液中或结合以下溶液辅助治疗:2%或6% NaOCl +10 μg/mL DJK-5, 2%或6% NaOCl + 8.5% EDTA +10 μg/mL DJK-5, 2%或6% NaOCl + 8.5% EDTA + 10 μg/mL DJK-5. 没有玷污层的样本施以6% NaOCl或10 μg/mL DJK-5作为阳性对照。冲洗时间为3或10分钟。通过活/死染色和激光共聚焦扫描显微镜评估抗菌效力。

结果显示,玷污层减弱了6% NaOCl和10 μg/mL DJK-5的抗菌效力。2%或6% NaOCl跟着施以10 μg/mL DJK-5的抗菌效果要优于10 μg/mL DJK-5的单独使用(P < .05),但要弱于2%或6% NaOCl + 8.5% EDTA + 10 μg/mL DJK-5和2%或6% NaOCl + 8.5% EDTA + 10 μg/mL DJK-5 (P < .05)。8.5% EDTA和10 μg/mL DJK-5混合的感染效果与10 μg/mL DJK-5单独使用相似(P < .05)。在使用EDTA +肽之前应用2%或6% NaOCl具有最大的杀菌性(P < .05)。

结论:玷污层会抑制牙本质的消毒效果。肽DJK-5对根管内的单一和多物种生物膜具有较强的抗菌效果。施以6% NaOCl随后使用EDTA 混合肽DJK-5展现出最强的杀菌效力。

原始出处:

Wang D, Shen Y, et al. Antimicrobial Effect of Peptide DJK-5 Used Alone or Mixed with EDTA on Mono- and Multispecies Biofilms in Dentin Canals. J Endod. 2018 Sep 19. pii: S0099-2399(18)30514-4. doi: 10.1016/j.joen.2018.07.018.

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    2018-10-18 orangesking

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    2018-10-18 ycmayy