Table 1.

Information about the composites employed according to the manufacturer.

Composite	Organic matrix	Filler	Shade	Batch number
Filtek Z350 XT	bis-GMA, UDMA, TEGDMA, and bis-EMA	63.3% of the volume (silica: 20 nm, zirconia: 4 to 11 nm, and zirconia/silica clusters of 0.6 to 10 μm)	A2B	775639
Filtek Z350 XT Flow	bis-GMA, TEGDMA, and Procrylat K	46% of the volume (yttrium fluoride: 0.1 to 5.0 μm, silica: 20 nm, zirconia: 4 to 11 nm, and zirconia/silica clusters of 0.6 to 10 μm)	A2	N509855
X-tra fil	bis-GMA, UDMA, and TEGDMA	70,1% by volume (inorganic fillers)	U	1315355