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Hydroxyapatite (HA), ß-tricalcium phosphate (ß-TCP) and their mixtures have been successfully applied in orthopedic, oral and maxillofacial surgery [1]. Calcium phosphate (CP) bioactive ceramics based on HA is usually fabricated of appropriate powders. Unfortunately, mechanical properties of such material are in general worse than those of human bone. Therefore, there is a necessity for development...
A microwave‐assisted solvent‐free synthesis of hydroxyapatite from calcium nitrate and sodium phosphate is reported. The product was characterized with respect to the presence of foreign ions and its thermal behavior. An apatite phase was formed in the mixture after irradiation with 2.45 GHz microwaves for 4 min at 350 or 700 W. Structurally, the product was a nanocrystalline calcium‐deficient hydroxyapatite...
The formation of bone tissue in pores, and around, a block made of partially dehydroxylated porous hydroxyapatite ceramic and implanted into a rat’s femur using X-ray diffraction (XRD), infrared spectroscopy (IRS) and histological methods were investigated. Structural characteristics and composition of new bone tissue formed three months after implantation, in fact, do not differ from those of the...
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