110 teeth with a diagnosis of pulp necrosis and apical radiolucency at the apex. Working length was established with EAL and confirmed radiographically. M4 system with Flex-R files were used to complete canal preparation. Level of discomfort were recorded and cases with severe postoperative pain and/or swelling were classified as flare-ups.
Aim to compare Incidence of flare-ups and apical healing after single-visit or two-visits treatment of teeth with necrotic pulp and apical periodontitis after a two-year control period.~110 teeth with a diagnosis of pulp necrosis and apical radiolucency at the apex. Working length was established with EAL and confirmed radiographically. M4 system with Flex-R files were used to complete canal preparation. Level of discomfort were recorded and cases with severe postoperative pain and/or swelling were classified as flare-ups.