Table 1. Type, composition, and batch number of tested cements.

Product	Type	Composition	Lot No.	Manufacturer
RelyX U200	Dual polymerized self-adhesive resin cement	55 - 65% glass powder	535365	3M ESPE, St. Paul, MN, USA
		15 - 25% methacrylated phosphoric acid esters
		10 - 20% TEGDMA
		1 - 5% silane-treated silica
		1 - 5% sodium persulfate
FujiCEM 2	Resin-modified glass-ionomer cement	30 - 40% polyacrylic acid	1307041	GC Dental, Tokyo, Japan
		30 - 40% distilled water
		2% silica powder
		20% silicone dioxide
		2 - 3% benzensulfonic acid sodium salt
Panavia F 2.0	Dual polymerized self-adhesive resin cement	Paste A: 10-MDP, silanated silica, hydrophobic aromatic and aliphatic dimethacrylate, hydrophilic dimethacrylate photoinitiator, and dibenzoyl peroxide	A: 00571A	Kuraray Medical Inc., Okayama, Japan
		Paste B: silanated barium glass, sodium fluoride, sodium aromatic sulfinate, dimethacrylate monomer, and BPO	B: 00110B

MDP, 10-methacryloxydecyl dihydrogen phosphate; TEGDMA, Triethyleneglycol Dimethacrylate; BPO, benzoyl peroxide.