Study of the influence of K+, Mg2+, SO4(2-) and CO3(2-) ions in the biomimetic crystallization of amorphous calcium phosphate (ACP) and conversion into octacalcium phosphate (OCP)

Química Nova

Santos, Márcio Luis dos¹  Fook, Marcus Vinícius Lia¹  Aparecida, Anahí Herrera¹  Guastaldi, Antonio Carlos¹ 

关键词: biomimetic coating;    amorphous calcium phosphate;    octacalcium phosphate.;   

DOI  :  10.1590/S0100-40422007000400024

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The crystallization of hydroxyapatite (HA) in aqueous solution can be described by the mechanism ACP ® OCP ® HA. In this work, it was studied the influence of K+, Mg2+, SO42- and CO32- ions in the formation of ACP and in its conversion to OCP, using biomimetic coatings on metallic substrates of commercially pure titanium (Ti c.p.). The results showed that Mg2+ and CO32- ions favored both the formation of ACP and its conversion to OCP. Differently, K+ and SO42- ions did not influence the formation of ACP and, consequently, interfered in the conversion to OCP.

【 授权许可】

Unknown