Postoperative Sensitivity of Composite Replacement of Amalgam Restoration: A Randomized Clinical Trial
This randomized clinical trial aimed to evaluate the postoperative sensitivity of different resin composite/adhesive materials, placed either by an incremental or bulk-fill technique in posterior resin composite replacement of amalgam restorations. A total of 47 patients with good overall health and at least four class I or class II amalgam restorations to be replaced participated in this study. The characteristics of 188 cavities were registered and randomly restored using incremental (Z350XT, 3M) or bulk-fill (Filtek Bulk Fill, 3M; Sonic Fill, Kerr; and Opus Bulk Fill, FGM) technique. The postoperative sensitivity was assessed using a Visual Analog Scale (0–100) after 24 hours, 7 days, and 30 days. Pain scores were temporally analyzed using Friedman test followed by Dunn post hoc test (α=0.05). The frequency of tests was calculated according to the frequency and percentage of the McNemar test. The restorative technique and the bulk-fill system used did not affect the postoperative sensitivity, except for Filtek Bulk Fill group, which presented less postoperative sensitivity after 24 hours (p=0.037). Regardless of the restorative material, the postoperative sensitivity decreased after 24 hours, and no differences were found after 7 and 30 days. After 1 week, the filling technique and the bulk-fill system have no influence on the postoperative sensitivity.SUMMARY
Purpose
Methods and Materials
Results
Conclusions
Flow diagram in the different phases of the study. Np, number of patients, Nr, number of restorations.
Contributor Notes
Clinical Relevance
The postoperative sensitivity in posterior cavities restored with resin composites is not affected by the filling technique or by the bulk-fill system.