Effect of Polymerization Time and Home Bleaching Agent on the Microhardness and Surface Roughness of Bulk-Fill Composites: A Scanning Electron Microscopy Study

Table 1

Materials, manufacturer, and chemical composition.

Material	Abbreviation	Manufacturer	Composition
Filtek Bulk Fill nano-RBC	FB	3M ESPE, USA	AUDMA, UDMA, 1.12-dodecane-DMA, 4-11 nm zirconia particles, 20 nm silica and 100 nm ytterbium trifluoride fillers CQ, EDMAB (76.5% by weight)
SonicFill nanohybrid RBC	SF	Kerr, USA	Bis-GMA, TEGDMA, EBPDMA, SiO2, glass, oxide (83.5% by weight), CQ
Bite & white	BW	Cavex, Netherland	16% carbamide peroxide (equivalent to 6% hydrogen peroxide); 0.2% potassium nitrate desensitizer; 0.1% sodium fluoride desensitizer, carbomer, glycerin, EDTA, potassium hydroxide, peppermint oil, water

Abbreviations: Bis-GMA, bisphenol-A diglycidyl ether dimethacrylate; EBPDMA, ethoxylated bisphenol-A-dimethacrylate; TEGDMA, triethylene glycol dimethacrylate; UDMA, urethane dimethacrylate.