Comparative evaluation of the antibacterial efficacy of sodium hypochlorite gel and solution at different concentrations against Enterococcus faecalis within the root canals of primary molars: an in vitro study
Keywords:
NaOCl gel , Irrigants , Primary molars , Enterococcus faecalisAbstract
Objectives:
The study aimed to evaluate the antibacterial efficacy of sodium hypochlorite (NaOCl) in its solution and gel forms, at different concentrations, as an irrigant against Enterococcus faecalis in primary molars.
Materials and methods:
The sample consisted of 50 upper and lower primary molars, divided into five equal groups: Group 1: 2.25% NaOCl solution. Group 2: 5.25% NaOCl solution. Group 3: 2.25% NaOCl gel. Group 4: 4% NaOCl gel. Group 5 (negative control): 0.9% saline. After irrigation, the teeth were incubated for 24 hours. A sample was then cultured on blood agar plates. The plates were
then incubated for 72 hours, and the bacteria were counted.
Results:
NaOCl at all concentrations, both liquid and gel forms, demonstrated antibacterial activity against Enterococcus faecalis, with 2.25% NaOCl gel outperforming 4% (p < 0.001).
Conclusions
NaOCl gel at concentrations of 2.25%–4% can be considered an effective alternative against Enterococcus faecalis in the endodontic treatment of primary molars.
