Evaluation of Wear Properties of Four Bulk-Fill Composites: Attrition, Erosion, and Abrasion

Table 1

Properties of the tested composite resins.

Commercial brand	Composite type	Manufacturing company	Constituents	Filler percentage	Color
EverX Posterior	Short-fiber composite	GC Corp, Tokyo, Japan	Short E-glass fiber filler, barium glass, bis-GMA, PMMA, TEGDMA	74.2 wt%; 53.6 vol%	Universal
Filtek Bulk-Fill Posterior	Nanofilled	3M ESPE, St. Paul, MN, USA	Nonagglomerated/nonaggregated 20 nm silica filler, nonagglomerated/nonaggregated 4 to 11 nm zirconia filler, aggregated zirconia/silica cluster filler, ytterbium trifluoride filler consisting of agglomerate 100 nm particles, ERGP-DMA, diurethane-DMA, 1,12-dodecane-DMA	76.5 wt%; 58.4 vol%	A2
SonicFill 2	Nanohybrid	Kerr Co., Orange, CA, USA	Poly(oxy-1,2-ethanediyl), α,α-[(1-methylethylidene)di-4, 1-phenylene]bis[ω-[(2-methyl-1-oxo-2-propen-1-yl)oxy]-Not available. 2,2-ethylenedioxydiethyl dimethacrylate	81.3 wt% unreported
X-tra fil	Hybrid	VOCO Cuxhaven, Germany	Barium-boron-alumino-silicate glass, bis-GMA, UDMA, TEGDMA	86 wt%; 70.1 vol%	Universal
Filtek Z250 Universal	Microhybrid	3M ESPE, St. Paul, MN, USA	Zirconia/silica without silane treatment, bis-GMA, UDMA, bis-EMA	82 wt%; 60 vol%	A2

Bis-GMA: bisphenol A-glycidyl methacrylate; PMMA: poly (methyl methacrylate); TEGDMA: triethylene glycol dimethacrylate; DMA: dimethacrylate; UDMA: urethane dimethacrylate.