a commercially available self-etching/self-priming bonding resin; consists of a primer & a bonding agent; primer contains 4-methylacryloxyethyl trimellitate, HEMA (hydroxyethyl methacrylate), ethanol & distilled water; bonding agent contains UDMA (urethan dimethacrylate), HEMA, TEGDMA (triethylene glycol dimethacrylate) & camphorquinone