Ca-deficient hydroxyapatite synthesis on the bioapatite bovine bone substrate study

Abstract

Bioapatites (A) from natural bones are used as implants for bone grafts or powder bone fillings. The main advantage of A obtained from natural bones is the best ratio of Ca and P in comparison with synthetic bioapatites. Second component, Ca-deficient hydroxyapatite (CDH), is biocompatible and cheap material that is very often used not only in biological applications, but also for ceramic utilization. In this study we used the surface of bioapatite as a substrate for the CDH deposition. Calcinated A’s at several temperatures were subsequently crushed in mortar or milled in jet mill. The Ca-deficient hydroxyapatite was prepared by easy precipitation route on bioapatite surface. The final modified A’s structure was characterised using X-ray powder diffraction, infrared spectroscopy with Fourier transformation and scanning electron microscopy. The results show that interactions between CDH and A are probably by physical and non-bonding base.