Preparation and properties of macroporous brushite bone cements

G. Cama, F. Barberis, R. Botter, P. Cirillo, M. Capurro, R. Quarto, S. Scaglione, E. Finocchio, V. Mussi, U. Valbusa

Research output: Contribution to journalArticle

Abstract

In the present work a macroporous brushite bone cement for use either as an injected or mouldable paste, or in the shape of preformed grafts, has been investigated. Macropores have been introduced by adding to the powder single crystals of mannitol which worked as a porogen. The size of the crystals was in the range of 250-500 μm in diameter, suitable for cell infiltration, with a shape ratio between 3 and 6. From compression tests on cylindrical samples an elastic modulus in the range 2.5-4.2 GPa and a compressive strength in the range 17.5-32.6 MPa were obtained for a volume fraction of macropores varying between 15 and 0%. Thus the compressive strength exceeded in all tests the maximum value currently attributed to cancellous bone.

Original languageEnglish
Pages (from-to)2161-2168
Number of pages8
JournalActa Biomaterialia
Volume5
Issue number6
DOIs
Publication statusPublished - Jul 2009

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Keywords

  • Bone cement
  • Brushite
  • Cell adhesion
  • Mechanical properties
  • Porosity

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering
  • Biotechnology
  • Biochemistry
  • Molecular Biology

Cite this

Cama, G., Barberis, F., Botter, R., Cirillo, P., Capurro, M., Quarto, R., Scaglione, S., Finocchio, E., Mussi, V., & Valbusa, U. (2009). Preparation and properties of macroporous brushite bone cements. Acta Biomaterialia, 5(6), 2161-2168. https://doi.org/10.1016/j.actbio.2009.02.012