Table 1.

Specifics and composition of the analysed restorative composites. The amount of particles is expressed as volume percentage.

Composite	Code	Type	Manufacturer	Organic Matrix	Inorganic Phase
Enamel plus Hri	EPH	UD2	Micerium	UDMA, Bis-GMA, BDDMA	Glass filler, Silicon dioxide (53 vol %)
Clearfil Majesty Esthetic	CLM	A2	Kuraray	Bis-GMA, Hydrophobic aromatic dimethacrylate	Silanated barium glass filler (66 vol %)
DEI	DEI	Enamel	DEI Italia	Bis-GMA, UDMA TEGDMA, EBPADMA	Vitreous fillers; pyrogenic silica
Smart dentine Replacement	SDR	Flowable Base	Dentsply	Modified UDMA, EBPADMA, TEGDMA	Barium and strontium alumino-fluoro-silicate glasses (45 vol %)