Please use this link to access this publication. Abstract Introduction The aim of the present study was to evaluate the effectiveness of cannabidiol (CBD)-rich Cannabis extract in reducing anxiety and postoperative pain in patients submitted to endodontic treatment. Methods The study was carried out after approval by the Research Ethics Committee (Registration No. 5.075.961). The following groups were tested: CBD and placebo. Pain was measured using a visual analog scale before the start of treatment and 24, 48, and 72 hours and 7 days after the session. Anxiety was assessed using the Modified Dental Anxiety Scale and a visual analog scale, before and immediately after treatment. In addition,...