Abstract
This study evaluated the clinical performance of a bulk-fill resin composite in class II cavities for up to 2 years. Class II restorations (N=111) were made using a nanohybrid bulk-fill resin composite (SonicFill, Kerr Corp.) and evaluated following 1 week after placement, at 6 months, and thereafter annually up to 2 years using the United States Public Health Service (USPHS) criteria. The changes were analyzed using the McNemar test and the Kaplan-Meier method. No secondary caries was observed until the final recall. One restoration underwent endodontic treatment after 2 months following the restorative procedure and was deemed a failure. The overall success rate was 99.1%. Colour match deteriorated from a score of 0 to 1 in eight restorations from baseline to 6 months and six restorations showed marginal staining at final recall. Bulk-fill resin composite (SonicFill) showed acceptable clinical performance through 2 years of service but colour match to the tooth started to show some deterioration within the first 6 months.
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