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US 8,133,828 B2Granted
Lanthanum oxide-doped glass-ceramics
AssigneeThe Ohio State University Research Foundation
InventorsIsabelle L. Denry, Julie A. Holloway
Life of this patent
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Abstract
Glass-ceramic compositions exhibiting high reliability and tensile strength are described. The compositions can include crystal phases including roedderite and/or potassium fluorrichterite. The glass-ceramic compositions are bioactive, and can be used as components of a wide variety of biomedical devices such as dental restorations.
Claims17
A bioactive glass-ceramic composition consisting essentially of:
- SiO2:
- 50-70;
- MgO:
- 8-25;
- Na2O:
- 1.5-9;
- K2O:
- 2-12;
- CaO:
- 4-15;
- BaO:
- 0-2;
- Li2O:
- 0-3;
- F:
- 3-8;
- and
- La2O3:
- 0.1-8
- by weight percentage.
17 more elements
A biomedical device comprising a bioactive glass-ceramic composition consisting essentially of:
- SiO2:
- 50-70;
- MgO:
- 8-25;
- Na2O:
- 1.5-9;
- K2O:
- 2-12;
- CaO:
- 4-15;
- BaO:
- 0-2;
- Li2O:
- 0-3;
- F:
- 3-8;
- and
- La2O3:
- 0.1-8
- by weight percentage.
17 more elements
Dependencies are inferred from the claim text.