Inventors:
Larry L. Hench - Gainesville FL
Arthur E. Clark - Gainesville FL
Rounan Li - Gainesville FL
Assignee:
Geltech, Inc. - Alachua FL
International Classification:
C09K 300, C01B 1516, C03C 1000, C04B 3800
Abstract:
Sol-gel processing techniques are used to produce alkali-free bioactive glass compositions based on SiO. sub. 2, CaO and P. sub. 2 O. sub. 5. By varying the SiO. sub. 2 content, a range of hydroxyapatite production rates can be obtained; conversely, varying the time of exposure to actual or simulated in vivo solutions permits use of a range of allowable proportions of SiO. sub. 2. The sol-gel derived compositions can be chosen to achieve target values for thermal expansion coefficient, elastic modulus and volume electrical resistivity.