Antibiofilm effect of different concentrations of silver nanoparticles combined with calcium hydroxide against Enterococcus faecalis biofilm: An ex vivo study.

IF 1.3 4区医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE Australian Endodontic Journal Pub Date : 2024-08-14 DOI:10.1111/aej.12882

Sumaya Basudan, Alanoud Alqahtani, Fatemah Alrwais, Reem Almeaither, Sayed Auda, Hanan A Balto

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Abstract

This study aimed to evaluate the antibiofilm activity of different concentrations of silver nanoparticles (AgNPs) in combination with calcium hydroxide [Ca(OH)₂] against Enterococcus faecalis biofilm. On an E. faecalis biofilm on dentin discs, the following medicaments were applied for 7 days (n = 13/group): 0.005% AgNPs+Ca(OH)₂, 0.01% AgNPs+Ca(OH)₂, 0.02% AgNPs + Ca(OH)₂, Ca(OH)₂ and saline/control. Specimens were stained with LIVE/DEAD® BacLight™ dye and analysed with confocal laser scanning microscopy. Proportion of dead bacteria was calculated and analysed. There was a significant reduction in E. faecalis biofilm in all medicament groups (43.5%, 49.1%, 69.1%, 48.7%) respectively, compared with control group (2.54%) (p < 0.001). The 0.02% AgNPs + Ca(OH)₂ group demonstrated the most significantly superior antibiofilm effect, with no significant difference between remaining groups. In conclusion, combining 0.02% AgNPs enhanced the antibiofilm effect of Ca(OH)₂ on E. faecalis biofilm compared with lower AgNPs concentrations.

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不同浓度的纳米银颗粒与氢氧化钙结合对粪肠球菌生物膜的抗生物膜效应：一项体内外研究。

本研究旨在评估不同浓度的银纳米粒子 (AgNPs) 与氢氧化钙 [Ca(OH)2] 结合使用对粪肠球菌生物膜的抗生物膜活性。在牙本质盘上的粪肠球菌生物膜上，使用以下药物 7 天（n = 13/组）：0.005%AgNPs+Ca(OH)2、0.01%AgNPs+Ca(OH)2、0.02%AgNPs+Ca(OH)2、Ca(OH)2 和生理盐水/对照组。用 LIVE/DEAD® BacLight™ 染料对标本进行染色，并用激光共聚焦扫描显微镜进行分析。计算并分析死亡细菌的比例。与对照组（2.54%）相比，所有药物组（43.5%、49.1%、69.1%、48.7%）的粪大肠杆菌生物膜均有明显减少（p 2 组的抗生物膜效果最为显著，其余各组之间无明显差异）。总之，与较低浓度的 AgNPs 相比，添加 0.02% 的 AgNPs 增强了 Ca(OH)2 对粪大肠杆菌生物膜的抗生物膜作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Australian Endodontic Journal DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.50

自引率

6.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Australian Endodontic Journal provides a forum for communication in the different fields that encompass endodontics for all specialists and dentists with an interest in the morphology, physiology, and pathology of the human tooth, in particular the dental pulp, root and peri-radicular tissues. The Journal features regular clinical updates, research reports and case reports from authors worldwide, and also publishes meeting abstracts, society news and historical endodontic glimpses. The Australian Endodontic Journal is a publication for dentists in general and specialist practice devoted solely to endodontics. It aims to promote communication in the different fields that encompass endodontics for those dentists who have a special interest in endodontics.