نتایج جستجو برای: hydroxyapatites
تعداد نتایج: 151 فیلتر نتایج به سال:
Biomaterials are substances manufactured for medical purposes in direct contact with the tissues of organisms. Prior to their use, they are tested to determine their usefulness and safety of application. Hydroxyapatites are used in medicine as a bony complement because of their similarity to the natural apatite therein. Thanks to their bioactivity, biocompatibility, stability and non-toxicity h...
Silicon substituted hydroxyapatites (SiHA) are among the most interesting bioceramics in the field of bioactive bone implants. Silicon incorporation into the apatite structure results in materials with comparable biocompatibility and mechanical properties, but with improved bioactive behaviour. The higher bioactivity promotes the reaction between bone and implant, leading to excellent osteointe...
This paper presents a new aqueous precipitation method to prepare silicon-substituted hydroxyapatites Ca10(PO4)6-y(SiO4)y(OH)2-y(VOH)y (SiHAs) and details the characterization of powders with varying Si content up to y=1.25molmolSiHA(-1). X-ray diffraction, transmission electron microscopy, solid-state nuclear magnetic resonance and Fourier transform infrared spectroscopy were used to accuratel...
1DDS, MS, PhD student of the Metallurgical and Materials Engineering Department of the Federal University of Rio de Janeiro Rio de Janeiro, RJ, Brazil. 2DDS, MS, PhD Associate Professor of the Biological Science Department, Bauru Dental School, University of Sao Paulo, SP, Brazil. 3Eng, MS, PhD, Associate Professor of the Metallurgical and Materials Engineering Department of the Federal Univers...
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