Antibacterial effect of different concentrations of sodium hypochlorite on Enterococcus faecalis biofilms in root canals oleh Mohammad Forough Reyhani, Yousef Rezagholizadeh, Mohammad Reza Narimani, Lotfollah Rezagholizadeh, Mohammad Mazani, Mohammad Hossein Soroush Barhaghi, Yavar Mahmoodzadeh