The aim of this clinical study was to evaluate the effect of different engine-driven nickel titanium (Ni-Ti) instrumentation systems (OneShape, Revo S and WaveOne) on postoperative dental pain in patients with asymptomatic teeth after a single-appointment root canal retreatment. A total of a hundred thirty nine patients with asymptomatic teeth and with no contradictory medical history who were indicated for non-surgical retreatment at the Endodontic Clinic, Faculty of Dentistry, Istanbul Medipol University, between September and December 2016 were included in this study. All of the patients have been recruited from the Istanbul Medipol University Dental Clinics in Istanbul. Out of a hundred thirty nine patients, a total of ninety-nine patients who met the inclusion criteria and agreed to participate was enrolled for the study and were divided into three groups (n=33). Consent was obtained from all study participants before the treatment. After removing previous root canal filling, instrumentation was performed using One Shape, Revo-S, and WaveOne in groups 1, 2, and 3, respectively. All retreatments were performed in a single appointment by one endodontist before permanent coronal restoration. Postoperative pain intensity was assessed at 6, 12, 18, 24, 48, and 72 h; 7 days; and 1 month after the retreatment. The teeth was examined according to for pain intensity, percussion & palpation sensitivity, swelling, analgesic intake and clinical status.
In this study the effect of different engine-driven nickel titanium (Ni-Ti) instrumentation systems (OneShape, Revo S and WaveOne) on postoperative dental pain in patients with asymptomatic teeth after a single-appointment root canal retreatment was evaluated.