Table 1.

The restoration materials

Chemistry	Classification	Restoration material \ Manufacturer	Code
Siloxane Oxirane	Micro-hybrid non-methacrylate composite	Filtek Silorane \ 3M ESPE Co., St. Paul, MN, USA	Silorane
UDMA	Micro-fill Hybrid composite	G-aenial \ GC Co. Tokyo, Japan	G-aenial
UDMA	Micro-fill Hybrid composite	Gradia Direct anterior \ GC Co. Tokyo, Japan	Gradia
Bis-GMA UDMA, TEGDMA	Hybrid composite	Xtra-fill \ VOCO Co. Cuxhaven, Germany	Xtra-fill
UDMA, Bis-EMA TEGDMA	Hybrid composite	Filtek Z250 Universal Restorative \ 3M ESPE Co., St. Paul, MN, USA	Z250
Fluoro Aluminosilicates Glass	Glass-Ionomer	GC Fuji-IX \ GC Co. Tokyo, Japan	Fuji-IX