The Effect of Final Irrigation Agitation Techniques on Postoperative Pain after Single Visit Root Canal Treatment of Symptomatic Irreversible Pulpitis: A Randomised Clinical Trial

Objective:To evaluate the degree of postoperative pain and rate of analgesic intake in patients with sympto-matic irreversible pulpitis in mandibular first molar teeth at 6 h, 12 h, 24 h, 48 h, and 72 h after using different irrigation activation techniques in single-visit endodontic treatment.Methods: A total of 78 patients with symptomatic irreversible pulpitis with no signs of periapical pathology were randomly divided into 3 groups according to the final irrigation activation technique; Group XP-endo Finisher, Group Ultra X ultrasonic device, and Group side-vented needle. The teeth underwent standardised single-visit root canal treatment procedures using 2.5% sodium hypochlorite for irrigation. Each patient was given a chart to record postoperative pain at 6, 12, 24, 48 and 72 hours intervals. Ibuprofen, 400 mg tablets, was prescribed to be taken when the pain was unbearable. The incidence and number of analgesic tablets taken were recorded. Data were analysed using a Kruskal-Wallis test followed by a pairwise Mann-Whitney U test with Bonferroni correction for intergroup comparisons and Freidman's test followed by Dunn's post hoc test for intragroup comparisons.Results: No statistically significant difference was found between all groups regarding the incidence and in-tensity of pain at different time intervals (p>0.05). There was no significant difference in analgesic intake be-tween different groups, with most cases in all groups not taking analgesics (p>0.05).Conclusion: Adding XP-endo Finisher or passive ultrasonic irrigation to the final irrigation protocol in single -visit endodontic treatment had no significant effect on postoperative pain or analgesic intake.