Liquid 1. 2-hidroxyethyl methacrylate (2-HEMA) (25-50%); BIS-GMA (25-50%); HEDMA (10-25%); Acidic adhesive monomer (5-10%); Urethanedimethacrylate (UDMA) (5-10%); catalysts (≤ 2.5%); pH-value 2.3 Liquid 2. Ethanol (50-100%); Initiator (2.5-5%); catalysts (≤ 2.5%)