Tricalcium phosphate (TCP) synthetized by high temperature solid state reaction at 1400°C and three derived calcium cements (CPCs) prepared liquid to powder (L/P) ratios of 0.33, 0.44 0.55 ml/g, respectively, were physicochemically characterized. Calcium deficient hydroxyapatite crystals identified scanning electron microscopy on CPC, differences in crystal sizes observed different L/P ratios. ...

Calcium deficient nanohydroxyapatite (nanoHap) powders were synthesized by co-precipitation of calcium α-D-heptagluconate hydrate and diammonium hydrogen phosphate solutions. TEM and HRTEM images of powders after the drying of products showed that the reactant concentration affected the sizes and morphology of particles. Small changes were found in phase composition of nanoHap powders synthesiz...

Effect of SiO2 addition on the microstructures of calcium-deficient hydroxyapatite prepared by the heat-treatments was examined. Obtained hydroxyapatites substituted with Si ion were characterized by XRD, FT-IR and XAFS measurements. XANES results of Si K-edge and P K-edge in these modified hydroxyapatites indicated the shift of peaks of P K-edge with the SiO2 contents, although no change of Si...

Aseptic loosening and bacterial infections are the two main causes of failure for metallic implants used joint replacement. A coating that is both bioactive possesses antimicrobial properties may address such shortcomings improve performance implant. We have sought to study combining hydroxyapatite-based nanoparticles or coatings with baicalein, a plant-extracted molecule antibacterial antioxid...

INTRODUCTION: In vitro assays are a potent tool for the evaluation of biomaterial performance. However, in the case of bioactive materials, like calcium phosphates (CaPs) the ionic exchange with the cell culture medium can make cell cultures very tricky. This is particularly relevant in the case of biomimetic hydroxyapatite, which has high specific surface area (SSA) and high surface reactivity...