Table 1: Composition (wt%) of the three different adhesives tested.

AdhesiveResinFillerAdditional contents

Transbond XTBisphenol A diglycidyl ether dimethacrylate
(10–20 wt%)
Bisphenol A bis(2-hydroxyethyl ether) dimethacrylate
(5–10 wt%)
Silane-treated quartz
(70–80 wt%)
Dichlorodimethylsilane reaction product with silica
(<2 wt%)

Ortho CemBisphenol A diglycidyl ether methacrylate (Bis-GMA)
(25–35 wt%)
Triethylene glicol dimethacrylate (TEGDMA)
(10–15 wt%)
Methacrylated phosphate monomer
(>2 wt%)
Silane treated silicon dioxide
(45–60 wt%)
Camphorquinone
(<1 wt%)
Sodium fluoride
(>1 wt%)

HeliositBis-GMA and decanediol dimethacrylate (85 wt%)Highly dispersed silicon dioxide (14 wt%)Catalysts and stabilizers (1 wt%)