Figure 1.

Chemical compositions of the resinous cements and adhesive systems

Resin cement (batch number)	Composition of the resin cement	Composition of the adhesive system (batch number)
Allcem dual cure (71007) FGM, Joinville, PR, Brazil	Base paste: TEGDMA, BisEMA, BisGMA, camphoroquinone barium-aluminum-silicate microglass, silica nanoparticles;	Component 1,5 (activator) (7KY) ethanol, sulfinic acid salt, sodium salt.
	Catalyst paste: methacrylic monomers, dibenzoyl peroxide and stabilizers, barium-aluminum-silicate microparticles of 66-67 wt% over the mixture.	Component 2 (Primer) (7BP) HEMA, polyalkenoic acid polymer, water.
RelyX ARC dual cure (GCHJ) 3M ESPE,Sumaré, SP, Brazil	Paste A: BisGMA, TEGDMA, 68% by weight zirconia/silica filler, pigments, amine and photoinitiator system.	Component 3,5 (catalyst) (7BB) BisGMA, HEMA, BPO.
	Paste B: 67% by weight zirconia/silica filler, benzoyl peroxide
RelyX U100 selfcure (321638) 3M ESPE,Sumaré, SP, Brazil	Base: glass fiber, multifunctional methacrylate phosphoric acid monomers, dimethacrylates,silanated silica, sodium persulfate.	-
	Catalyst: glass fiber, dimethacrylates, silanated silica, p-toluene sodium sulfate, calcium hydroxide
Maxcem Elite self cure (3018537) Kerr Corporation, Orange, CA,USA	Resin matrix: GPDM, co-monomers (mono-, di-, and tri-functional methacrylate monomers), proprietary self-curing redox activator, photoinitiator CQ, stabilizer	-
	Filler load 67%wt: fluoroaluminiosilicate glass, fumed silica, barium glass, ytterbium fluoride

GPDM - glycerol dimethacrylate dihydrogen phosphate

CQ - camphorquinone

TEGDMA - triethylenglycol dimethacrylate

BisEMA - ethoxylated bisphenol A glycol dimethacrylate