Si-tricalcium phosphate cement: preparation, characterization and bioactivity in SBF

• Published in: Materials research (São Carlos, São Paulo, Brazil) São Paulo, Brazil), 2011-12, Vol.14 (4), p.493-498
• Main Authors: Motisuke, M, Carrodeguas, R G, Zavaglia, C A de C
• Format: Article
• Language: eng ; por
• Subjects: Apatite; Biochemistry; biomedical application; Biomedical materials; Bone cements; Calcium carbonate; Calcium phosphate; calcium phosphate cements; Cements; ENGINEERING, CHEMICAL; MATERIALS SCIENCE, MULTIDISCIPLINARY; METALLURGY & METALLURGICAL ENGINEERING; Silicon; silicon-doped tricalcium phosphate; tricalcium phosphate; wollastonite
• ISSN: 1516-1439; 1980-5373; 1980-5373
• DOI: 10.1590/S1516-14392011005000065

There is evidence of the effectiveness of Si in enhancing biological properties of calcium phosphates, but little information on Si-alpha-TCP bone cement. The influence of silicon doping on the properties of alpha-TCP cement was analysed. Si-TCP was obtained by a solid state reaction using CaCO3, CaHPO4 and CaSiO3 and the powder was analysed by XRD, FTIR, XRF and BET specific area. Surfaces of cement samples were analysed for fracture morphology, mechanical resistance and SBF bioactivity. The mechanical resistance of the cement was not satisfactory for biomedical application, but the surface of the sample was coated by an apatite layer after immersion in SBF. It is necessary to evaluate the in-vivo performance of this bone cement to ensure that silicon is the element responsible for increasing the bioactivity of the material.