Table 1. Materials used in this study.

Product	Manufacturer	MR*	Main Components of monomer mixture	LOT Numbers
TemDent Classic	Schütz Dental GmbH/Rosbach, Germany	2:01	Polymethyl methacrylate	2009002782
Imident	Imicryl Dis Malzemeleri/Konya, Turkey	1:2.4	Polymethyl methacrylate	A100-016
Tab 2000	Kerr Italy/Scafati, Italy	3:2	Polymethyl methacrylate	61565
Structur Premium	VOCO GmbH/Cuxhaven, Germany	1:1	Bisacrylic composite resin	1150157
Systemp c&b ll	Ivoclar Vivadent AG/Schaan, Liechtenstein	4:1	Polyurethane polymethacrylate	F55051
Acrytemp	Zhermack spA/Via Bovazecchino, Italy	4:01	Bisacrylic composite resin	C700200
Takilon BBF	WP GmbH/Barmstedt, Germany	2.1:10	Polymethyl methacrylate	-

^*MR: Mixing ratio, dimethacrylate-base: catalyst [by volume] or monomethacrylate-liquid : powder [volume : mass].