Sol-gel calcium phosphate ceramic coatings and method of making same
AssigneeThe University of British Columbia
InventorsTomasz Troczynski, Dean-Mo Liu
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Abstract
This invention relates to novel sol-gel calcium phosphate, in particular hydroxyapatite ceramic coatings and processes of making same at low temperature. Such coatings are useful, inter alia, for dental implants and bone-metal contact appliances. A sol-gel process for preparing a crystallized hydroxyapatite which comprises: (a) hydrolysing a phosphor precursor in a water based medium; (b) adding a calcium salt precursor to the medium after the phosphite has been hydrolysed to obtain a hydroxyapatite gel; and (c) calcining the crystallized hydroxyapatite at a suitable elevated temperature.
Claims17
A sol-gel process for preparing a crystallized calcium phosphate which comprises:
- (a) hydrolysing a phosphor precursor in a water based medium;
- (b) adding a calcium salt precursor to the medium after the phosphite in the precursor has been hydrolysed to obtain a calcium phosphate gel;
- and
- (c) calcining the calcium phosphate gel at an elevated temperature which is suitable for forming a crystallized calcium phosphate.
A sol-gel process for preparing a crystallized hydroxyapatite which comprises:
- (a) hydrolysing a phosphor precursor in a water-based medium;
- (b) adding a calcium salt precursor to the medium after the phosphite in the precursor has been hydrolysed to obtain a hydroxyapatite gel;
- and
- (c) calcining the hydroxyapatite gel at an elevated temperature which is suitable to produce a crystallized hydroxyapatite.
Dependencies are inferred from the claim text.