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Table 1 Materials composition and supplier’s details

From: Effect of universal adhesives on microtensile bond strength to hybrid ceramic

Material Brand name, manufacturer and LOT number Composition Instructions of use
Hybrid ceramic Vita Enamic (VE) (Vita Zahnfabrik; Bad Säckingen, Germany) LOT41110 SiO2, Al2O3, Na2O, K2O, B2O3, ZrO2, CaO, UDMA, TEGDMA  
Silane-based primer Silane (S) (Silane, Pulpdent Corporation, Watertown, MA, USA) 02471 MPS, 2-Propanol 1. Apply silane using micro-brush 2. Let evaporate for 1 min 3. Blow with gentle air stream until completely dry
Ceramic etchant IPS Ceramic (Ivoclar Vivadent, Schaan, Liechtenstein) U39349 4.6% Hydrofluoric acid  
Universal adhesives Clearfil Universal Bond (CUB) (Kuraray Noritake Dental Inc. Chiyoda Ku, Tokyo, Japan) 000001 Bis-GMA, HEMA, ethanol, 10-MDP, hydrophilic aliphatic dimethacrylate, colloidal silica, DL camphorquinone, silane coupling agent, accelerators, initiators, water 1. Dispense one drop each of BOND and “CLEARFIL DC Activator” into a well of the dispensing dish and mix them together with the applicator brush. 2. Apply the mixture then brush and leave it for 5 s. 3. Dry by blowing mild air for more than 5 s until the adhesive shows no move.
Tetric N-Bond Universal (TNU) (Ivoclar Vivadent, Schaan, Liechtenstein) U22452 MDP, MCAP, HEMA, D3MA water, ethanol, highly dispersed silicon dioxide, initiators and stabilizers 1. Apply and then scrub for at least 20 s 2. Disperse with oil- and moisture-free compressed air until a glossy, immobile film layer.
Resin cement (Dual cure) Variolink Esthetic DC Vivadent, Schaan, Liechtenstein) V19788 urethane dimethacrylate, methacrylate monomers, inorganic fillers (ytterbium trifluoride and spheroid mixed oxide), Initiators, stabilizers and pigments 1. Dispense Variolink Esthetic DC from the automix syringe 2. Apply Variolink Esthetic DC directly to surface treated ceramic material. 3. Light cure