Table 1:
The characteristics and composition of materials used in this study
| Materials & Manufacturer | Composition* |
|---|---|
| Filtek Z250 (3M, St Paul, MN, USA) | BIS-GMA, UDMA, BIS EMA, Zirco-nium/Silicon fillers |
| GRADIA indirect (GC, Tokyo, Japan) | UDMA, silica nanofiller, glass and prepolymerized filler |
| Fiber ribbon (Angelus, Londrina, PR, Brazil) | Glass fiber |
| Fiber braided (BTD, NSW, Australia) | Polyethylene fibers |
| Nulite F (BTD, NSW, Australia) | Micro rod reinforced composite, hybrid BIS-GMA |
| Adhesive c (Angelus, Londrina, PR, Brazil) | Bis-GMA, UDMA, Silicon Dioxide highly dispersed, catalysts, pigments |
| Resist bonding (BTD, NSW, Australia) | Unfilled resin, low viscosity, Bis-GMA, UDMA, Comphorquinone |
*
BisEMA: Ethoxylated Bisphenol A glycidyl dimethacrylate; UDMA: Urethane dimethacrylate