Table 1.

Chemical compositions, manufacturers, and product names of the various materials used in this study.

Product name	Type	Composition	Modulus of elasticity	Manufacturer
Cerasmart	Flexible resin nanoceramic blocks	Flexible nano ceramic matrix with an even distribution of nanoceramic	12.1 MPa	GC America, Inc
Ceramill COMP	Ceramic based composite	Strontium boroaluminosilicate glass 78 % nanofillers, BODMA, Bis-GMA, UDMA. Ceramill COMP corresponds to Creamed AMBARINO High-class blanks	13.8 MPa	Amann Girrbach, Germany
RelyX Ulitmate	Dual cure resin cement	Methacrylate monomers, radiopaque, silanated fillers, radiopaque alkaline (basic) fillers, initiator components, stabilizers, rheological additives, pigments and dark cure activator for Scotchbond universal adhesive	7.7 GPa	3M ESPE, Germany