POSTOPERATIVE PAIN AFTER RETREATMENT PROCEDURES USING RECIPROCATING OR ROTARY KINEMATICS: A SYSTEMATIC REVIEW
Endodontics; Retreatment; Pain, postoperative.
Introduction: The aim of this systematic review was to assess the postoperative pain after nonsurgical endodontic retreatment using reciprocating system compared to rotary system. Material and Methods: Searches were performed in the PubMed, Scopus, Web of Science, Cochrane Library, Clinical Trials and Open Grey databases for articles published until December 2020. Only randomized clinical trials (RCTs) were included. Meta-analyses using Mantel-Haenszel method and random-effect models were performed to find the pooled estimates of risk ratio (RR) with 95% confidence interval (CI), to calculate the incidence of postoperative pain. The I2 statistic was used to evaluate the statistical heterogeneity among studies.Results:Four articles were selected and included in the meta-analysis. There was no significant difference in the incidence of pain at 24, 48 and 72 hours after the procedures (RR = 1.16 ([CI: 0.74, 1.80] p = 0.52; RR = 1.29 ([CI: 0.66, 2.50] p= 0.46; and RR = 1.40 ([CI: 0.48, 4.07] p = 0.54; respectively). Conclusions: the incidence of postoperative pain after endodontic retreatment does not differ between cases treated with either reciprocating or rotary systems.