Abstract: There is provided a highly functional one-step light-curing dental adhesive composition i) based on a multifunctional prepolymer mixture of 2,2-bis-[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl]propane (“Bis-GMA”) and a multifunctional prepolymer formed by substitiuting hydrogen atoms of hydroxyl groups present in Bis-GMA molecules with methacrylate groups, in which the Bis-GMA is used as a base prepolymer of conventional dental adhesive compositions; and ii) comprising and acidic monomer for removing a portion of smear layer, which is allowed to be bonded without separate treatment of acid etchant, an adhesive monomer having both hydrophobic and hydrophilic properties, a hydrophilic monomer which is allowed to be bonded in the present of moisture, an inorganic filler for improving mechanical properties, diluent, water for demineralization, a photoinitiation system and other additives.

Abstract: Disclosed are surface-modified medical metallic materials and preparation thereof. The medical metallic material is prepared by coating a gold or silver thin layer onto a base metal, adsorbing a polyfunctional sulfur compound onto the gold or silver thin layer, and chemically bonding a biologically active material such as heparin or estradiol to the functional group of the sulfur compound. The biologically active material is firmly bonded to the base metal via the sulfur compound. Being significantly improved in antithrombogenicity and biocompatibility, the metallic materials are suitable for use in various implants, including stents, artificial cardiac valves and catheters.

Abstract: Disclosed are surface-modified medical metallic materials and preparation thereof. The medical metallic material is prepared by coating a gold or silver thin layer onto a base metal, adsorbing a polyfunctional sulfur compound onto the gold or silver thin layer, and chemically bonding a biologically active material such as heparin or estradiol to the functional group of the sulfur compound. The biologically active material is firmly bonded to the base metal via the sulfur compound. Being significantly improved in antithrombogenicity and biocompatibility, the metallic materials are suitable for use in various implants, including stents, artificial cardiac valves and catheters.