Ytterbium-barium silicate radiopaque glasses

Details Ytterbium-barium silicate radiopaque glasses Ytterbium-barium silicate radiopaque glasses

2007-02-13

2007-02-13

Koslow, C. Melissa (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Dental

C523S117000, C523S116000, C523S115000, C524S847000

Reexamination Certificate

active

10882189

ABSTRACT:
A family of radiopaque glasses comprising silicon dioxide (15–30%), ytterbium oxide (5–35%), barium oxide (30–50%) and fluoride (5–20%), all by weight. The family of glasses all exhibit high radiopacity with refractive indices varying from 1.508–1.592 and translucency ranging from clear to moderately opaque. These glasses can be incorporated into dental composites to provide radiopaque dental restoratives with a desired translucence and appearance.

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