TABLE 1.

Materials used in this study

Material	Brand name	Manufacture	Composition	Batch No./Lot No.
Tricalcium-silicate cement	Biodentine®	Biodentine™,Septodont, Saint-Maur-des-Fossés,Creteil, France.	Powder: Tricalcium silicate, dicalcium silicate, calcium carbonate and oxide, iron oxide, and zirconium oxide. Liquid: Calcium chloride and hydrosoluble polymer.	B20459
Resin composite	Filtek™Z250 XT	Filtek™Z250 XT,3M ESPE, St. Paul,MN, USA	Filler System: Surface-modified zirconia/silica with a median particle size of approximately 3 microns or less. Non-agglomerated/ non-aggregated 20-nanometer surface-modified silica particles. Resin System: Bisphenol A-glycidyl methacrylate, urethane dimethacrylate, ethoxylated bisphenol A glycol dimethacrylate, Polyethylene glycol dimethacrylate and triethylene glycol dimethacrylate.	N773306
Resin modified glass ionomer	GC Fuji II LC	GC Corporation,Tokyo, Japan	Powder: Fluoro-alumino-silicate glass. Liquid: Polyacrylic acid, hydroxyethyl methacrylate (HEMA) dimethacrylate, camphorquinone, water.	170209A
Resin-based dental luting material	Variolink N	IvoclarVivadent Schaan, Liechtenstein,Germany	Monomer matrix: Bisphenol A-glycidyl methacrylate, urethane dimethacrylate, and triethylene glycol dimethacrylate. Inorganic fillers: Barium glass, ytterbium trifluoride, Ba-Al- fluorosilicate glass, and spheroid mixed oxide. Additional contents:initiators, stabilizers, and pigments.	W11420