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Evaluation the Effect of Occlusal Reduction on Postoperative Pain in Teeth with Irreversible Pulpitis and Mild Tenderness to Percussion.

Pain control management after root canal treatment is a very important in clinical practice. The purpose of this study was to evaluate the effect of occlusal reduction on postoperative pain following root canal instrumentation in teeth with irreversible pulpitis and mild tenderness to percussion.Methods: Forty premolar vital teeth with sensitivity to percussion requiring endodontic treatment were included in this study. After administration of local anesthesia, the root canals were instrumented using WaveOne single file technique. The patients were randomly divided into 2 groups of 20 each. In group I (OR group) the occlusal surface was reduced, whereas in the other group II (NOR group), the occlusal surface was not modified (no occlusal reduction) and all teeth were instrumented with WaveOne single file technique. Each patient was asked to record their postoperative pain on a verbal rating scale with 4 categories at 12 hours, 24 hours and 48 hours. Data were analyzed by Mann-Whtney tests.Results: Forty patients returned the verbal rating scale forms. There was no significant difference in postoperative pain between the 2 groups (P > .05) after root canal preparation.Conclusions: Occlusal surface reduction did not provide any further reduction in postoperative pain for teeth with irreversible pulpitis and mild tenderness to percussion compared with no occlusal