Most endodontic failures are due to the presence of bacteria and their ability to create biofilms. The most located bacterium is E. faecalis, for which the use of irrigation is an important factor for its elimination, apart from the biomechanical procedure especially using NaOCl. Objective: To compare the antibacterial capacity of different NaOCl solutions from commercial brands. Methodology: 55 single-rooted teeth were collected and were inoculated whit E. faecalis for 1 week. These were divided into 3 experimental groups to irrigate them with 3 distinct brands of NaOCl Cloralex, Viarzoni-t, Clorox and with 2 positive and negative control groups. The concentrations of the solutions were analyzed before irrigation and sensidisk were performed to evaluate their antimicrobial activity. Result: A decrease in the bacterial load was observed in the 3 experimental groups, especially with the Cloralex brand, which also has a higher concentration; while the brand for dental use, whose use is recommended, was the one that presented the lowest concentration failing in the percentage of its labeling, while after 24 hours the one that produces the greatest bacterial growth is the Clorox brad. Conclusions: The commercial brand with the highest concentration is Cloralex, in is the one that produces the greatest reduction in bacterial load and the lowest growth in 24 hours, with significant difference with Clorox.
La mayoría de los fracasos endodónticos es por presencia bacteriana por su capacidad de crear biofilms. La bacteria que más comúnmente se localiza es el E. faecalis, por lo cual el uso de la irrigación es un factor importante para su eliminación, aparte del procedimiento biomecánico en especial utilizando NaOCl. Objetivo: Comparar la capacidad antibacteriana de diferentes soluciones de NaOCl de marcas comerciales. Metodología: Se recolectaron 55 dientes unirradiculares al cual se le inoculo con E. faecalis por 1 semana, estos se dividieron en 3 grupos experimentales para irrigarlos con 3 marcas diferentes de NaOCl: Clorox, Cloralex, Viarzoni-t y 2 grupos control positivo y negativo. Las concentraciones de las soluciones se analizaron antes de la irrigación y se realizaron sensidiscos para evaluar su actividad antimicrobiana. Resultados: Se observo disminución de la carga bacteriana en los 3 grupos experimentales, en especial con la marca Cloralex, la cual también presento una mayor concentración; en tanto que la marca de uso dental, cuyo uso se recomienda, fue la que presento una menor concentración fallando en el porcentaje en su etiquetado, mientras que al paso de 24 hrs la que produce mayor crecimiento bacteriano es la marca Clorox. Conclusiones: La marca comercial que mayor concentración tiene es Cloralex de igual manera, es la que produce mayor reducción de carga bacteriana y que menor crecimiento presenta en 24 hrs, con diferencia significativa con Clorox.
