The incidence and identity of microorganisms present in root canals at filling following culture reversals

Healing Rate and Post-obturation Pain of Single- versus Multiple-visit Endodontic Treatment for Infected Root Canals: A Systematic Review

“…The lower incidence of post-obturation pain in single-visit root canal treatment might be attributed to immediate obturation, thereby to avoid passage of medications, repeated instrumentation, and irrigation. Moreover, a single-visit approach might also prevent the occurrence of pain resulting from reinfection of the canals as a consequence of bacterial ingress from a leaky temporary restoration or lateral canal (16,49). On the contrary, the multiple-visit technique involves the placement of a temporary seal and the repeated physical and chemical stimulation to periapical tissues.…”

An in vitro evaluation of the antimicrobial efficacy of irrigants on biofilms of root canal isolates

“…Enterococcus faecalis has gained notoriety as a persistent organism that can survive as a monoculture in root canals (Grahnen & Krasse 1963, Engstrom 1964, Goldman & Pearson 1969, Myers et al . 1969, Olgart 1969, Gomes et al .…”

“…Streptococcus intermedius , together with other Streptococcus species, has been routinely implicated as a survivor of root canal treatment regimes (Grahnen & Krasse 1963, Goldman & Pearson 1969, Myers et al . 1969, Olgart 1969, Byström & Sundqvist 1983, 1985, Gomes et al .…”

Effects of mechanical and chemical procedures on root canal surfaces

“…The majority of studies have reported culture reversals during the interappointment period without the aid of further active antibacterial dressing between appointments. The reversals were attributed to re-growth of residual bacteria or re-contamination by bacterial leakage around the access cavity restoration (105,(186)(187)(188)(189).…”