Dental restorative cement compositions

Abstract

Abstract IMPROVED DENTAL RESTORATIVE CEMENTS ARE PREPARED BY UTILIZING AS A BINDER FOR INORGANIC FILLER MATERIALS, SUCH AS SILANE-TREATED CRYSTALLINE QUARTZ, EITHER ALONE OR TOGETHER WITH OTHER MONOMERS, TRIMETHACRYLATE AND TRIACRYLATE ESTERS OF THE ALIPHATIC TRIOLS GLYCEROL, TRIMETHYLOLETHANE, TRIMETHYLOLPROPANE, AND TRIMETHYLOLBUTANE. THE PREFERRED RESTORATIVE CEMENTS WITH RESPECT TO APPEARANCE ARE OBTAINED BY USING FINELY DIVIDED CRYSTALLINE QUARTZ AS A FILLER AND A BINDER RESIN HAVING AN INDEX OF REFRACTION IN THE RANGE OF 1.525 TO 1.565 BINDER RESINS HAVING REFRACTIVE INDEXES WITHIN THIS RANGE CAN BE OBTAINED BY INCLUDING IN THE MONOMER MIX TOGETHER WITH THE ALIPHATIC TRIOL AT LEAST ONE MONOMER OF THE GROUP CONSISTING OF 1,3 - BIS(2.3 - DI(METHACRYLOXY)-PROPOXY)-BENZENE (RGTMA), 2.2 - BIS(4- (3- METHACRYLOXY)-2-HYDROXY PROPOXY)-PHENYL)-PRONANE 8BIS-GMA), 1,3-BIS (3METHACRULOXY - 2 HYDROXYPROPOXY)-BENZENE (RGDMA), 2,2BIS(4-(2-METHACRYLOXYETHOXY)-PHENYL)-PROPANE(SR348), DI(2-METHACRYLOXYETHYL)-DIPHENYL SILANE, DI(2METHACRYLOXY-METHYLETHOXY)-DIPHENYL SILANE, AND METHACRYLATE ESTER (CMDO-25 METHACRYLATE) IN WHICH A METHACRYLOXY GROUP OR GROUPS ARE ATTACHED TO DIPHENYL OXIDE NUCLEI THROUGH SINGLE METHYLENE BRIDGES, THE MONOMERS BEING REPRESENTED BY THE GENERAL FORMULA: TRI(R-),(CH2=C(-CH3)-CO-O-CH2-)-DIPHENYL ETHER WHERE R IN EACH INSTANCE IS AT LEAST ONE OF THE GROU CONSISTING OF H AND -CH2-O-CO-C(-CH3)=CH2

Inventors

• 👤 R Gander
• 👤 Crea Potts R Mc

Bibliographic Details