The introduction of self-adhesive filling materials has shown advantage in clinical use due to reduced procedure time. The newly developed self-adhesive Surefil One (SO) was compared to other current self-adhesive materials Vertise Flow (VF) and GC Fuji II LC (FJ). Shear bond strength (SBS) to dentin, flexural strength and water sorption were measured at 24 h and 4 weeks. Fluoride release was measured up to 4 weeks. SO showed intermediate fluoride-release that was higher than VF, but lower than FJ. SO demonstrated lower flexural strength than VF at 24 h but maintained that same strength to 4 weeks. SO had SBS comparable to FJ and VF at 24 h but it decreased at 4 weeks. Caution should be exercised when selecting and using SO, as well as the other two self-adhesive materials. Further studies are necessary to evaluate the efficacy for their clinical use in direct restorations.