Penetration of E. faecalis into Root Cementum Cause for Reinfection

Evaluation of antibacterial efficacy of fungal-derived silver nanoparticles against Enterococcus faecalis

“…Bacterial adaptation to the root dentin and cementum determines the pathogenicity of the microorganisms. [ 15 ] Ability to form biofilm, structure of biofilm, physiological modification of bacteria within biofilm, stress response, and growth of microorganisms influence the bacterial adaptation and survival even in nutrient-depleted environment. [ 16 17 ]…”

“…[ 18 19 ] E. faecalis survives even after meticulous root canal instrumentation, irrigation, or intracanal medications and can penetrate root dentin and even cementum. [ 1 15 ] E. faecalis has the ability to form biofilm and survive even in the presence of intracanal medication. [ 20 ] E. faecalis present in biofilm is more resistant to antibacterial agents.…”

Evaluation and comparison between the bactericidal effect of diode laser irradiation (970 nm) and silver nanoparticles on Enterococcus faecalis bacterial strain (an in vitro study)

“…Enterococcus faecalis is the most common bacteria leading to failures of root canal treatment (Monawer & Abdulkahar, 2016;Colaco, 2018;Haypek, 2006) resisting the antibacterial agents such as NaOCl in different treatments (Valera et al, 2009;Sohrabi et al, 2016). E. faecalis can form a biofilm and enter inside the dentinal tubules (Duggan & Sedgley, 2007;Rahul et al, 2014), resistance to alkaline pH and to calcium hydroxide pastes, which normally inhibit other bacteria. This resistance may be related to severe and excessive working active proton pump in the membrane of these bacteria (Weckwerth et al, 2013).…”