Table 1 Materials used in this study
Product | Manufacturer | Filler type | Filler content | Matrix composition | Shade | Lot | |
|---|---|---|---|---|---|---|---|
wt% | vol% | ||||||
Omnichroma | Tokuyama Dental, Tokyo, Japan | Uniform sized supra-nano spherical filler (260 nm spherical SiO2-ZrO2) and composite filler | 79% | 68% | UDMA*, TEGDMA** | Universal | 016E21 |
Filtek Z350 XT | 3 M ESPE, Minnesota, USA | non-agglomerated/non-aggregated 20 nm silica filler, non-agglomerated/non-aggregated 4 to 11 nm zirconia filler, and aggregated zirconia/silica cluster filler (comprised of 20 nm silica and 4 to 11 nm zirconia particles) | 78.5% | 63.3% | Bis-GMA***, UDMA, TEGDMA, Bis-EMA(6)† PEGDMA†† | A2B | NC93014 |