Glass composition
AssigneeIr Scientific Inc.
InventorsDaniel BOYD, Kathleen O'CONNELL, Kathleen Naomi MACDONALD-PARSONS
Life of this patent
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Abstract
The present disclosure provides a glass composition that include from about 50 mol % to about 95 mol % of B2O3; from about 5 mol % to about 50 mol % of one or more glass components selected from the group consisting of: Li2O, Rb2O, K2O, Na2O, SrO, CaO, MgO, and ZnO. The glass composition includes less than 30 mol % of Rb2O. The glass composition is a quaternary system. The glass composition is a particulate material that includes particles that are from about 1 to about 50 μm in size. The glass composition loses at least 5 mass % within 24 hours when exposed to a buffered saline solution. The glass composition may be used to desensitize dentin. The present disclosure also provides a dentin-desensitizing composition.
Claims92
A glass composition comprising:
- from about 50 mol % to about 95 mol % of B2O3;
- from about 5 mol % to about 50 mol % of one or more glass components selected from the group consisting of:
- Li2O, Rb2O, K2O, Na2O, SrO, CaO, MgO, and ZnO;
- 0 mol % of CuO;
- less than 0.1 mol % of BaO;
- and
- less than 0.1 mol % of P2O5;
- wherein the glass composition comprises less than 30 mol % of Rb2O,
- wherein the glass composition is at least a quaternary system,
- wherein the glass composition loses at least 5 mass % within 24 hours when exposed to a buffered saline solution, and
- wherein the glass composition is a particulate material that comprises particles that are from about 1 to about 50 μm in size.
A glass composition comprising:
- fluoride, which is provided as from about 5 mol % to about 10 mol % of CaF2, SnF2, NaF, KF, or any combination thereof, such as about 5 mol % of CaF2 or about 10 mol % NaF;
- and
- from about 90 mol % to about 95 mol % of a combination of B2O3, Na2O, MgO, and CaO;
- wherein the boron, the magnesium, the combination of Na and any K, and the combination of Ca and any Sn in the glass composition are present in elemental ratios of about 20:
- about 4:
- about 6:
- about 3, respectively,
- wherein the glass composition loses at least 5 mass % within 24 hours when exposed to a buffered saline solution, and
- wherein the glass composition is a particulate material that comprises particles that are from about 1 to about 50 μm in size.
A glass comprising:
- from about 50 mol % to about 95 mol % of B2O3;
- from about 5 mol % to about 50 mol % of one or more glass components selected from the group consisting of:
- Li2O, Rb2O, K2O, Na2O, SrO, CaO, MgO, and ZnO;
- 0 mol % of CuO;
- less than 0.1 mol % of BaO;
- and
- less than 0.1 mol % of P2O5;
- wherein the glass comprises less than 30 mol % of Rb2O, and
- wherein the glass composition is at least a quaternary system.
A glass comprising:
- fluoride, which is provided as from about 5 mol % to about 10 mol % of CaF2, SnF2, NaF, KF, or any combination thereof;
- and
- from about 90 mol % to about 95 mol % of a combination of B2O3, Na2O, MgO, and CaO, wherein the boron, the magnesium, the combination of Na and any K, and the combination of Ca and any Sn in the glass composition are present in elemental ratios of about 20:
- about 4:
- about 6:
- about 3, respectively.
Dependencies are inferred from the claim text.