Diko : calcium phosphate cement

calcium phosphate cement

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calcium phosphate cement

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Définitions

Amorphous calcium phosphate (ACP or ATCP) is a glassy precipitate of variable composition that is formed in double decomposition reactions involving a soluble phosphate and calcium salts (e.g. (NH4)2HPO4 + Ca(NO3)2)[1] performed under carefully controlled pH conditions. Such a mixture is also known as calcium phosphate cement.[2] The precipitate will either be 'amorphous tricalcium phosphate', ATCP, or calcium deficient hydroxyapatite, CDHA, Ca9(HPO4)(PO4)5(OH), (note that CDHA is sometimes termed apatitic calcium triphosphate).[1][3][4] The composition of amorphous calcium phosphate is CaxHy(PO4)z·nH2O, where n is between 3 and 4.5.[4] Precipitation from the moderately supersaturated and basic solution containing magnesium produces amorphous magnesium calcium phosphate (AMCP) in which magnesium incorporated into the ACP structure.[5]

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wiki:calcium phosphate cement

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