DENTAL MATERIAL Russian patent published in 1997 - IPC

FIELD: stomatology. SUBSTANCE: invention concerns joining natural and artificial teeth. Material of invention contains acrylate dental preparations of carbodent or evicrole and polyurethaidiol type based on tetramethylene glycol ether, 4,4- diphenylmethane diisocyanate, and diethylene glycol. Optimum concentration of polyurethaidiol is 20-40 weight parts per 100 weight parts of liquid preparation. Mother mixtures of polyurethaidiol and liquid preparation are stable for at least 6 months under storage and provide joined steel specimens shear strength of order of 10 MPa. EFFECT: improved adhesion characteristics and stability. 1 dwg , 4 tbl