Table 1: Materials Used in the Study

Brand Manufacturer Lot No. Composition
Filtek Z250 3M-ESPE,
St paul, MN, USA		 20040420 Bis-GMA, UDMA,
Bis-EMA
Bifix QM
  1. Primer
  2. Adhesive
  3. dual cure cement
 VOCO, Cuxaven, Germany 600429
  1. HEMA, Bis-GMA, water
  2. HEMA, Bis-GMA
  3. Resin matrix, filler
everStick StickTeck Ltd, Turku, Finland 2050426-ES-125 PMMA, Bis-GMA
E-glass fibers
Parapost Fiber Coltène/Whaledent, Mahwah, NJ, USA MT-4816 E-glass fibers, resin matrix, fillers

PMMA, poly methyl methacrylate, Mw 220.000.
Bis-GMA, bisphenol A-glycidyl dimethacrylate.
UDMA, urethane dimethacrylate.
Bis-EMA, bisphenol A polyethylene glycol diether.
HEMA, hydroxyethyl methacrylate.