Parvin, you could use phosphoric acid and calcium hidroxide solutions to prepare the hydroxyapatite, and use a fluoride salt to doping. You could introduce the fluoride with one of the solutions above before the reaction or doping by storing the apatite in a fluoride solution for a time. Take a care with the pH.
See this reference for apatite synthesis:
http://www.sciencedirect.com/science/article/pii/S0040603101004531
Thank you very much Lidia. I appreciate your time to answer my question. So, you mean, First, I need to make a solution of calcium hydroxide and then add the fluoride salt solution to this. Finally, add the phosphoric acid solution?? what would be the order, I am not quit following what you recommend. Thank you.
Parvin, you can check details of a patented synthesis of fluorapatite for dentistry applications at http://www.faqs.org/patents/app/20120128566. There are eight different procedures detailed.
Hi František ,
According to this patent, tetracalcium phosphate powder was used. I have checked several websites, but couldn't find any in the market. Does it mean that I need to make it first by myself? Any additional information would be greatly appreciated. Thanks.
Parvin, for the synthesis of Ca4(PO4)2O please check the following paper: C. Moseke, U. Gbureck, Acta Biomaterialia 6 (2010) 3815-3823. Heating between 1350-1500 C is required hence I believe it is not easy to get a commercial product.
Dear Parvin,
you can find all the patented method at the site www.espacenet.com. YOu can use keywords fluoroapatite and preparation in searching, I checked it and could find some methods. The complete descriptions are generally freely downloadable from this site.
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