DENTAL COMPOSITIONS INCORPORATING GLASS IONOMERS

• Main Authors: ROBERT LOUIS IBSEN, WILLIAM RICHARD GLACE, DONALD R. PACROPIS
• Format: Patent
• Language: English
• Published: 07.04.1988
• Edition: 4
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GLASS; HUMAN NECESSITIES; HYGIENE; JOINING GLASS TO GLASS OR OTHER MATERIALS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MINERAL OR SLAG WOOL; ORGANIC MACROMOLECULAR COMPOUNDS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A buffered glass ionomer cement for dental use, including in combination, a mixture of a fine particle, 5-10 microns, powder consisting essentially by weight of -silica 20-30% -boron oxide 1-10% -aluminum oxide 10-20% -aluminum fluoride 1-10% -calcium fluoride 30-40% -phosphorus pentoxide 1-5% -ammonium fluoride 1-10% - plus five to twenty percent of the weight of the above of zinc oxide and zero to ten percent of titanium dioxide, and a liquid component comprising, by weight polyacrylic acid of low molecular weight, 40% solution in water-100-80% by weight, d-tartaric acid-0-20%. The powder and the liquid component are mixed together in a ratio of from 1:1 to 5:3 by weight.