COMPOSITION FOR METALLOCERAMIC DENTAL PROSTHESIS MAKING Russian patent published in 1997 - IPC

FIELD: medicine, stomatology. SUBSTANCE: composition consists of three layers each of that has silicon oxide, aluminium oxide, calcium oxide, magnesium oxide, sodium oxide, potassium oxide, boric anhydride, titanium dioxide. The first layer has additionally, wt.-%: iron oxide, 0.2; tin dioxide, 4.5-6.0; and barium oxide, 2-3 at new wt.-% ratio of other components; the second and the third layers have, additionally, wt.-%: iron oxide, 0.25; and barium oxide, 3.5-3.9 at the alternated wt.-% ratio of the known components. EFFECT: enhanced strength, improved property. 2 tbl