J Endod:一种改良的树脂类封闭剂:物理和抗菌特性研究

2018-09-15 lishiting MedSci原创

这篇研究的目的是为了检测一种混合了季铵化合物、甲基丙烯酸二甲氨基十二烷基酯(DMAHDM)和纳米银(NAg)的树脂类封闭剂的物理和抗菌特性。

这篇研究的目的是为了检测一种混合了季铵化合物、甲基丙烯酸二甲氨基十二烷基酯(DMAHDM)和纳米银(NAg)的树脂类封闭剂的物理和抗菌特性。项目初步完成了一项研究,确定了将DMAHDM和Nag混入AH Plus (Dentsply Sirona, York, PA)时不会改变其物理特性(固化时间、流动性、可溶性和尺寸改变)的最高浓度。选择这些浓度构建了改良树脂类封闭剂(mAH Plus)。采用一种改良的直接接触试验测试AH Plus, DMAHDM + AH Plus, NAg + AH Plus和mAH Plus在1, 7和14天时对粪肠球菌的抗菌效果。结果显示,研究将2.5%浓度的DMAHDM和0.15%的Nag混入AH Plus中。mAH Plus的流动性显著下降,但仍符合美国国家标准协会/美国牙科协会规范的标准。改良封闭剂在固化时间、可溶性和尺寸上没有明显变化。在第一天,与AH Plus相比,0.15% NAg + AH Plus, 2.5% DMAHDM + AH Plus和mAH Plus对粪肠球菌的抗菌性能更高(P < .05)。在第7至14天,2.5% DMAHD

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    2018-09-17 chenshujs