Mohammad Goodarzi, Ramin Abiri, Roohollah Sharifi, Hamid Reza Mozaffari, Masoud Modarresi and Reza Hatam
Introduction: The main goal of root canal treatment is removing or reducing bacteria from root canal system and to this purpose, different materials and methods have been evaluated.
Aim: The aim of this study was to evaluate the antibacterial effect of Pistacia atlantica resin on Enterococcus faecalis bacteria in vitro.
Materials and Methods: In this experimental study, collected resin of Pistacia atlantica was extracted with Clevenger apparatus. Then, to determine the concentration of growth decreasing and growth inhibition on Enterococcus faecalis bacteria, concentration of 40% of essential oil was affected in ELISA plate. After 24 hours of incubation, the opacity of the walls, which indicates the growth rate of the bacteria, was read by an ELISA reader at 640 nm.
Result: The results of this study showed that there is a significant difference in the mean of Opacity between different concentrations of Pistacia atlantica resin (P<0.001). So that concentrations of 40 and 20% caused complete growth inhibition and other concentrations caused a significant decrease in growth. Also, there is no difference between the
inhibitory growth rate of the extract and the different concentrations of sodium hypochlorite and chlorhexidine (P=0.4).
Conclusion: From the findings of this study, it can be concluded that extract of Pistacia atlantica has a significant growth inhibition effect at high concentrations and decreasing growth effect in lower concentrations on Enterococcus faecalis.