Purpose The aim of this study was to evaluate the effect of different irrigation activation methods on postoperative pain (PP) using visual analog scale (VAS) using Xp-endo Finisher (XPF), EndoActivator (EA), and passive ultrasonic irrigation (PUI) activation techniques with conventional irrigation (CI) method.
Methods Twenty-five maxillary or mandibular nonvital teeth having single root and canal- were allocated in each group. The root canals were prepared with TF-Adaptive system. Three different activation techniques, including XPF, PUI, EA techniques, were applied during final irrigation. The canal treatments were completed in a single appointment and PP analysis was evaluated using VAS after 12, 24, and 48 hours.
Results No difference was found in 12 and 24 hour time intervals between groups (p>.05). A statistically significant difference was found between CI and XPF groups at 48 hour (p<.05). Conclusion All activation techniques caused PP. XP-Endo Finisher activation caused less postoperative pain than the conventional needle irrigation, at the 48 hours. The activation of irrigation solution with the novel XPF instrument demonstrated similar and tolerable results with PUI and EA on PP after root canal treatment.