Calcium Phosphate Ceramics

Abstract
The name “apatites” is given to a group of solids characterized by the chemical formula M10(XO4)6Z2. The apatites form a vast range of solid solutions; considerable variations among apatites can arise by ionic substitutions. Among the apatites, hydroxyapatite (Ca10(PO4)6(OH)2) is a scientifically important substance with considerable technological applications. This compound is found in nature and can also be synthesized. It is used extensively in the chromatographic separation of proteins. Another major interest for these apatites arises from the fact that hydroxyapatite crystals are the inorganic constituent of osseous and dental tissues and that synthetic hydroxyapatites are interesting biomaterials.

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