Table 1.

The composition of the utilized PFC and SFRCs

Product	Manufacturer	Character	Composition
Essentia Universal	GC Corp, Tokyo, Japan	Packable (PFC)	UDMA, BisEMA, BisGMA, TEGDMA, Bis-MEPP, Prepolymerized silica and barium glass 81 wt%
Alert	Jeneric/Pentron, Wallingford, CT, USA	Packable (SFRC)	Bis-GMA, UDMA, TEGDMA, THFMA.Silica and micrometer scale glass fiber 84 wt%, 62 vol%
Fibrafill Flow	ADM, Czech Republic	Flowable (SFRC)	Bis-EMA, Bis-GMA, UDMA, TEGDMA, HEMA. Silane treated silica particles (< 60 wt%) and fibers (< 10 wt%)
Fibrafill Dentin	ADM,	Packable (SFRC)	Bis-EMA, Bis-GMA, UDMA, TEGDMA, HEMA. Silane treated silica particles (< 80 wt%) and fibers (< 10 wt%)
everX Flow	GC Corp,	Flowable (SFRC)	Bis-EMA, TEGDMA, UDMA, micrometer scale glass fiber filler, Barium glass 70 wt%, 46 vol%
everX Posteior	GC Corp,	Packable (SFRC)	Bis-GMA, PMMA, TEGDMA, millimetre scale glass fiber filler, Barium glass 76 wt%, 57 vol%

Bis-GMA bisphenol-A-glycidyl dimethacrylate, UDMA urethane dimethacrylate, TEGDMA triethylene glycol dimethacrylate, THFMA tetrahydrofurfuryl-2-methacrylate, Bis-EMA Ethoxylated bisphenol-A-dimethacrylate, Bis-MEPP Bis (p-methacryloxy (ethoxy)1–2 phenyl)-propane, HEMA 2 hydroxyethyl methacrylate, PMMA polymethylmethacrylate, wt% weight%, vol% volume percentage