Incidence of Flare-ups and Apical Healing After Single-visit or Two-visits Treatment.

All treatment sessions were approximately 50 minutes in length to allow for acceptable time for completion of treatment and retreatment in one or two visits. All the clinical procedures were performed by the author. Following local anesthesia with 2% lidocaine with 1:100,000 epinephrine (Septodont Saint-Maur des Fossés, France) and rubber dam isolation the tooth was disinfected with 5.25% NaOCl (Ultra bleach, Bentonville, AR, USA).

Each patient will be evaluated a week after completion the clinical procedures.