Antibacterial Efficacy of a Dispersion of Silver Nanoparticles in Citrate Medium for the Treatment of E. faecalis: an In Vitro Study
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| Autores: | , , , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2016 |
| Descripción: | The purpose of this study was to measure the antibacterial efficacy of a dispersion of silver nanoparticles (AgNP) in a citrate medium tested in two E. faecalis strains. AgNP were synthesized, and AgNP citrate medium (AgNP-CM) dispersion was prepared at a concentration of 100 μg/mL. The antibacterial efficacy of AgNP-CM dispersion was evaluated over two E. faecalis strains: ATCC29212 and a wild strain collected from human necrotic teeth. 5% sodium hypochlorite (NaOCl) and sterile saline solution were used as positive and negative controls. 5 and 30-minute contact tests were conducted and each experimental group were replicated 10 times. After 24 hours of incubation, the Log CFU/mL were calculated. The AgNP obtained showed spherical shapes and had 30-60nm size. 5% NaOCl was able to completely eliminate both E. faecalis strains in all groups, showing a significant statistical difference when compared to AgNP-CM dispersion and negative control groups. AgNP-CM dispersion showed a statistically significant decrease in Log CFU/mL averages (p=0,0006) when compared to the sterile saline solution for the ATCC29212 strain during the 30-minute time. Between the 5-minute and 30-minute groups, a significant bacterial count decrease was also observed (p= 0,0128). The antibacterial efficacy of the dispersion was greater for the ATCC29212 strain than the wild strain, were the effect diminished. AgNP-CM dispersion showed a significantly lower antibacterial efficacy against E. faecalis than the 5% NaOCl at the tested times. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/23929 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/Odontos/article/view/23929 |
| Palabra clave: | Antimicrobial efficacy Silver nanoparticles Sodium hypochlorite E. faecalis |