Korea Institute of Science and Technology

Dentkist Co. Ltd.

Dong-Keun Han

Kwang-Duk Ahn

Young-ha Kim

Jin-Hee Jeong

Seo-Young Jeong

Jong-Man Kim

The invention relates to a photo-cured dental pit and fissure sealant composition for caries prevention: i) based on the multifunctional prepolymer mixture of 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane (&ldquo;Bis-GMA&rdquo;), which has conventionally been used as dental pit and fissure sealant for caries prevention, and a multifunctional prepolymer formed by substituting hydrogen atoms in hydroxyl group with methacrylate groups in the Bis-GMA molecules; and ii) comprising a diluent, an inorganic filler, a photoinitiation system, and other additives. The dental pit and fissure sealant composition of the present invention is based on a multifunctional prepolymer mixture and has better physical and mechanical properties and biocompatibility than a conventional composition based on Bis-GMA only.

Photo-cured dental pit and fissure sealant composition for caries prevention

The invention relates to a photopolymerizable composite resin composition for dental restoration i) based on the multifunctional prepolymer mixture of 2,2-bis-(4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl)propane (&ldquo;Bis-GMA&rdquo;) and multifunctional prepolymer formed by substituting hydrogen atoms in hydroxyl group with methacrylate groups in this Bis-GMA molecules, and ii) comprising a diluent, an inorganic filler, a photoinitiation system, and other additives. The photopolymerizable composite resin composition for dental restoration based on multifunctional prepolymer mixture has better physical and mechanical properties and biocompatibility than the conventional composition based on only Bis-GMA itself.

Photopolymerizable composite resin compositions for dental restoration

Novel sulfonated polyethyleneoxide-substituted polymers having improved blood compatibility are provided. The polymers are produced by substituting a polymeric substrate having active sites of amide or acid amide group, such as polyurethane, polyamide and polyacrylamide, with sulfonated polyethyleneoxide [PEO--(SO.sub.3 H).sub.n ]. The polymers according to the present invention are valuable as construction materials of the artificial organs for the circulatory system in contact with blood, such as artificial hearts, artificial blood vessels, artificial kidneys, etc.

Process for the preparation of sulfonated polyethyleneoxide-substituted

Novel sulfonated polyethyleneoxide-substituted polymers having improved blood compatibility are provided. The polymers are produced by substituting a polymeric substrate having active sites of amide or acid amide group, such as polyurethane, polyamide and polyacrylamide, with sulfonated polyethyleneoxide PEO-SO.sub.3 H. The polymers according to the present invention are valuable as construction materials of the artificial organs for the circulatory system in contact with blood, such as artificial hearts, artificial blood vessels, artificial kidneys, etc.

Growing community of inventors

Seoul, South Korea

Dong-Keun Han