An In Vitro Comparison of Elastoplastic and Viscoelastic Behavior of Dental Composites with Reversible Addition–Fragmentation Chain Transfer-Mediated Polymerization

Reversible addition–fragmentation chain transfer (RAFT)-mediated polymerization has been implemented in commercially available bulk-fill dental composites, with the idea of either optimizing at depth, while providing sufficient opacity, or reducing exposure time. The elastoplastic and viscoelastic behavior materials pursuing both ideas are described comparatively connection microstructure artificial aging. A 3-point bending test was followed by reliability fractographical analyses. monitored an instrumented indentation equipped a DMA-module various frequencies (0.5–5 Hz). Data reveal that similarity filler loading is reflected similar elastic moduli. Increased strength offset higher plasticity creep related to microstructure. Aging showed significantly stronger influence on material than differences composition. parameters deteriorate as result aging, but material-specific extent. strong behavior, very little viscous behavior. parameter most sensitive aging damping Detailed laboratory characterization indicates comparable vitro clinically successful materials.