Effect of Bleaching on Color Change and Surface Topography of Composite Restorations
Table 1
Physical characteristics of experimental materials.
Material
Filtek Z350
Esthet X
Admira
Manufacturer
3M ESPE
Dentsply
Voco, Germany
Type
Nanocomposite
Microhybrid
Ormocer based
Organic matrix
Combination of a non-agglomerated/non-aggregated, 20 nm nanosilica filler, and loosely bound agglomerated zirconia/silica nanocluster, consisting of agglomerates of primary zirconia/silica particles
Resin matrix (a urethane-modified Bis-GMA) is based on the matrix used in TPH Spectrum
3-dimensionally linked inorganic-organic copolymers (ormocers) and additive aliphatic and aromatic dimethacrylates
Filler type
Bis-GMA, UDMA, TEGDMA, and Bis-EMA resins
Barium alumino fluoroborosilicate glass (BAFG) and nanosized silicon dioxide particles
Ba-Al-B-silicate glass
Average particle size
0.6–1.4 microns
0.02 to 2.5 microns (with an average of from 0.6 to 0.8 microns)