Process for the preparation of natural or semi-synthetic hydroxylapatite or of tricalcium phosphate from natural apatites

摘要

The subject of the invention is a process for the preparation of natural or semi-synthetic hydroxylapatite or of tricalcium phosphate from natural apatites. According to this process, a natural apatite powder, for example a bone powder, is brought into contact with an acid in order to dissolve part of the calcium of the powder and to form a powder consisting mainly of calcium hydrogenphosphate and the calcium hydrogenphosphate powder is treated in order to obtain, from the latter, purified natural hydroxyapatite, semi-synthetic hydroxyapatite or tricalcium phosphate. IMAGE