Islam M Bendary, Alaa A Omar, Reham M Goda, Ahmed A Ali, Kareem A Lotfy, Mohamed M Shohayeb
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引用次数: 0
Abstract
Objective: This study was conducted to evaluate the antimicrobial efficacy and mechanical properties of two experimental self-disinfecting alginate preparations utilising two different antimicrobial agents; povidone-iodine and silver nanoparticles.
Methods: Alginate moulds were assigned into three groups. Additives-free control group, povidone-iodine-containing group, and silver nanoparticle-containing group. Discs from each group were obtained and assessed for their antimicrobial activities by the disc diffusion method against Staphylococcus aureus, Escherichia coli, and Candida albicans. For the elastic recovery analysis, each group was divided into 6 samples. Each sample was mixed according to its group specification and subjected to surface detail reproduction and elastic recovery according to ISO 1563:1990 specifications. All data were expressed as mean ± standard deviation for each group at the significance level of P < 0.05.
Results: Results revealed that the experimental self-disinfection alginate possessed broad-spectrum antimicrobial activities against the tested microorganisms, compared to the control group. No statistically significant differences in elastic recovery values between all tested groups (P < 0.05) were observed. For surface detail reproduction, all samples reproduced the 50 μm line.
Conclusion: Povidone-iodine as well as silver nanoparticles could be used efficiently for the sanitization of alginate moulds without adverse effects on detail accuracy or elastic recovery of the impression material.
研究目的本研究旨在评估使用聚维酮碘和纳米银两种不同抗菌剂的两种实验性自消毒藻酸盐制剂的抗菌效果和机械性能：藻酸盐模具分为三组。无添加剂对照组、含聚维酮碘组和含纳米银颗粒组。从每组中获取圆片，并通过圆片扩散法评估其对金黄色葡萄球菌、大肠杆菌和白色念珠菌的抗菌活性。为了进行弹性回收分析，每组分为 6 个样品。每组样品均按其组别规格混合，并根据 ISO 1563:1990 规格进行表面细节再现和弹性恢复。所有数据均以每组的平均值 ± 标准差表示，显著性水平为 P 结果：结果表明，与对照组相比，实验性自消毒海藻酸盐对测试微生物具有广谱抗菌活性。所有测试组之间的弹性恢复值差异均无统计学意义（P聚维酮碘和纳米银颗粒可有效地用于藻酸盐模具的消毒，而不会对印模材料的细节准确性和弹性恢复造成不良影响。
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