Evaluation of Efficiency of Polymerization, Surface Roughness, Porosity and Adaptation of Flowable and Sculptable Bulk Fill Composite Resins

A new category of commercial bulk fill composite resins (CRs) enables the placement 4-mm-thick layers as an alternative to traditional time-consuming incremental technique. The purpose present study was compare efficiency polymerization, adaptation and porosity two high-viscosity ‘sculptable’ CRs (Filtek™ Bulk Fill (3M™ ESPE, St. Paul, MN, USA) Tetric EvoCeram® (Ivoclar Vivadent AG, Schwan, Liechtenstein)) low-viscosity ‘flowable’ (SureFil® SDR™ flow (Dentsply Sirona, Charlotte, NC, EvoFlow® Schaan, Liechtenstein)). Cylindrical samples (4 mm height × 10 diameter) were analyzed by Fourier-transform infrared spectroscopy (FTIR) atomic force microscopy (AFM). Additionally, occlusal cavities prepared in twelve extracted human molars restored with (n = 3 for each CR). evaluated X-ray microcomputed tomography (µCT) a 3D morphometric analysis, also scanning electron (SEM) on longitudinal vestibulo-oral sections teeth. AFM analysis demonstrated that surface roughness SureFil® higher than Filtek™ Fill. µCT SEM confirmed flowable had excellent cavity walls. showed highest lowest degrees Fill, respectively. In general, exhibited better adaptation, polymerization lower sculptable materials.