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Cementos Biomédicos de Fosfato Tricálcico Reforzados con Silicatos y Aluminatos de Calcio-Preparación, Caracterización y Estudios de biodegradación

  • D. Correa
  • A. Almirall
  • R. García
  • L. A. Santos
  • A. de Aza
  • J. A. Delgado
Conference paper
Part of the IFMBE Proceedings book series (IFMBE, volume 33)

Abstract

The combination of in situ self-setting and biocompatibility makes calcium phosphate cements highly promising materials for a wide range of clinical applications. However, its low strength limits its use to only non-stress applications. α-Tricalcium phosphate (α-TCP) cement sets into calcium-deficient hydroxyapatite (CDHA), which is a biocompatible compound and can induce osteointegration. β-Dicalcium silicate (β-C2S) and tricalcium aluminate (C3A) are Portland cement components, these compounds react with water to form hydrated phases that enhance mechanical strength of the end products. In this investigation, were prepared α-TCP cements modified with β-C2S and C3A. α-TCP powder was prepared through acid-base method, β-C2S and C3A were synthesized by sol-gel method. Materials were characterized chemical and physically. Biodegradability was studied by soaking the materials in simulated body fluid (SBF) at 37°C for 7 days. All cements exhibited long setting times and excellent setting temperature. T (100% α-TCP) and TS10 (10%-β-C2S) were converted to CDHA after 7 days soaking in SBF and their compressive strength were comparable to that of trabecular bone. TA10 (10%-C3A) was only partly converted to CDHA and showed the lowest compressive strength.

Palabras claves

hidroxiapatita cementos óseos biocerámicas 

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Copyright information

© Springer Berlin Heidelberg 2013

Authors and Affiliations

  • D. Correa
    • 1
  • A. Almirall
    • 1
  • R. García
    • 2
  • L. A. Santos
    • 3
  • A. de Aza
    • 2
  • J. A. Delgado
    • 1
  1. 1.Centro de BiomaterialesUniversidad de La Habana, Cerámica y CompositesLa HabanaCuba
  2. 2.CerámicaInstituto de Cerámica y Vidrio-CSICMadridEspaña
  3. 3.LabiomatUniversidad Federal de Río Grande del SurPorto AlegreBrasil

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