Postoperative Pain After the Removal of Root Canal Filling Material

Postoperative Pain After the Removal of Root Canal Filling Material Using Different Techniques in Teeth With Failed Root Canal Therapy: A Randomized Clinical Trial

The aim of this study was to evaluate the intensity and duration of postoperative pain after the removal of root canal filling material in retreatment procedures of upper incisor teeth with chronic apical periodontitis, using different techniques.

The patients were assigned to three groups of 45 patients, according to the method used to remove old canal filling material. The presence of postoperative pain was assessed after 6, 12, 24, 48, and 72 hours, 7 days, and finally after 10 days.

The hypothesis of this study: there would be no difference in postoperative pain intensity among the groups.

Inclusion Criteria:

• asymptomatic incisor teeth with chronic apical periodontitis
• patients between 18-55 years of age

Exclusion Criteria:

• patients with systemic disease