Microbial biofilm proliferation within sealer-root dentin interfaces is affected by sealer type and aging period.

Introduction: Root canal fillings are intended to prevent microbial proliferation over time in the canal after treatment. The objective of this study was to assess biofilm proliferation within the sealer-dentin interfaces of 2 methacrylate resin-based systems, self-etch (SE) and total-etch (TE), and an epoxy resin-based sealer (EP), aged for up to 6 months.

Methods: Standardized specimens (n = 45) comprising the coronal 5 mm of human roots were filled with the test materials and gutta-percha.