Table 1.

Materials used in the study.

Abbreviation	Material	Brand Name	Manufacturer
Ti	Titanium, commercially pure, grade 4	CopraTi-4	Whitepeaks Dental Solutions GmbH & Co. KG, Wesel, Germany
ZrO-HT	Zirconium oxide ceramic (3 mol% yttria-stabilized tetragonal zirconia polycrystal)	KATANA™ Zirconia HT12	Kuraray Noritake, Tokyo, Japan
PMMA-Ker	Polymethylmethacrylate	E4K PMMA Premia	Kerox Dental Ltd., St Sóskút, Hungary
PMMA-Bre	Polymethylmethacrylate composite with ceramic fillers	breCAM.multiCOM	Bredent, GmbH & Co KG, Senden, Germany
PMMA-3D	Polymethylmethacrylate (3D printed from methacrylic oligomers)	NextDent™ Crown and Bridge (C&B)	NextDent B.V., Soesterberg, The Netherlands
PEEK	Polyetheretherketone reinforced with ceramic filler	BioHPP®	Bredent, GmbH & Co KG, Senden, Germany
PEKK	Polyetherketoneketone reinforced with titanium dioxide	Pekkton® ivory	Cendres and Métaux, Biel/Bienne, Switzerland