GLASS COMPOSITION (VARIANTS) Russian patent published in 1998 - IPC

Abstract RU 2114796 C1

FIELD: medicine, particularly, stomatology, namely, roentgenographic examination of caries. SUBSTANCE: glass composition comprises, mol.%: SiO₂, 17.6-21.6; P₂O₅, 0.8-3.5; Al₂O₃, 9.0-11.0; Na₂O, 0.5-3.0; MO, 17.9-19.7; F, 42.2-54.2; where MO is BaO, BaO-CaO, BaO-SrO, BaO-CaO-SrO. Glass composition may comprise, mol.%: SiO₂, 20; P₂O₅, 2; Al₂O₃, 10; Na₂O, 2; MO, 18; F, 48. Proposed glass composition comprising barium oxide may be added into dental cement composition. Said composition after its hardening is non-transparent for irradiation but it is transparent for visible light. EFFECT: simplified roentgenographic examination of caries. 20 cl, 1 tbl

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RU 2 114 796 C1

Authors

Chehdvik Tomas S.

Dates

1998-07-10—Published

1993-01-07—Filed