Postoperative pain after use of the WaveOne Gold and XP-endo Shaper systems: a randomized clinical trial
ABSTRACT
Introduction
The present study aimed to clinically compare the incidence of postoperative pain after endodontic treatment of posterior teeth using the WaveOne Gold (WOG; Dentsply Sirona, Ballaigues, Switzerland) and XP-endo Shaper (XPES; FKG Dentaire, La Chaux-de-Fonds, Switzerland) systems.
Methods
In a single-blind randomized clinical trial, 148 vital teeth with an indication for conventional endodontic therapy for prosthetic purposes were treated by five specialists following a pre-established protocol. All participants were unaware of the treatment they received. The teeth were randomly divided into two groups (n = 74) according to the instrumentation system used (the WOG group and XPES group). The treatments were performed in a single session. The participants were asked to rate the intensity of postoperative pain on a visual analog scale (no pain, mild pain, moderate pain, and severe pain) after 24 h, 48 h, 72 h, and 7 days.
Results
The incidence of postoperative pain was higher in the XPES group after 24, 48, and 72 h compared to those in the WOG group (P < 0.05). Two participants in the WOG group experienced severe postoperative pain after 24 h. None of the participants in either group reported pain after 7 days (P > 0.05, Mann-Whitney test).
Conclusions
Postoperative pain is expected after preparation of the root canal system with the WaveOne Gold and XP-endo Shaper systems tested, but it only persists for a short period. Although more common after the use of the XP-endo Shaper system, the pain was classified as mild at all time points.
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