Fluorapatite glass-ceramics
First Claim
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1. A fluorapatite glass-ceramic body prepared by a process comprising:
- (a) providing powdered glass by heating a SiO2—
Al2O3—
P2O5—
MgO—
Na2O—
K2O—
CaO—
CaF2 mixture having a CaO;
Al2O3 mole-ratio of about 2.5-30;
1;
(b) compacting the powdered glass into a solid form; and
(c) heating the solid form to about 650-1050°
C. for a time sufficient to yield a sintered fluorapatite glass-ceramic body.
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Abstract
The present invention provides a highly-sintered fluorapatite glass-ceramic comprising a high Ca/Al or Sr/Al mole-ratio, that possesses a microstructure that induces apatite/bone deposition.
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Citations
25 Claims
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1. A fluorapatite glass-ceramic body prepared by a process comprising:
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(a) providing powdered glass by heating a SiO2—
Al2O3—
P2O5—
MgO—
Na2O—
K2O—
CaO—
CaF2 mixture having a CaO;
Al2O3 mole-ratio of about 2.5-30;
1;(b) compacting the powdered glass into a solid form; and (c) heating the solid form to about 650-1050°
C. for a time sufficient to yield a sintered fluorapatite glass-ceramic body. - View Dependent Claims (3, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25)
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2. A fluorapatite glass-ceramic body prepared by a process comprising:
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(a) producing powdered glass by heating a mixture of SiO2—
Al2O3—
P2O5—
MgO—
Na2O—
K2O—
CaF2, comprising SrO or a combination of CaO and SrO having a mole ratio of SrO to Al2O3 of about 2.5-30;
1;(b) compacting the powdered glass into a solid firm; and (c) heating the solid form to about 650°
C.-1050°
C. for a time sufficient to yield a sintered fluorapatite glass-ceramic body. - View Dependent Claims (4, 5, 9, 18)
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Specification