12. Effect of Reinforcements on Properties of Self-Setting Calcium Phosphate Cement

  1. Mineo Mizuno
  1. N. C. Bhorkar and
  2. W. M. Kriven

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291269.ch12

Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6

Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6

How to Cite

Bhorkar, N. C. and Kriven, W. M. (2008) Effect of Reinforcements on Properties of Self-Setting Calcium Phosphate Cement, in Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6 (ed M. Mizuno), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291269.ch12

Author Information

  1. Department of Materials Science and Engineering University of Illinois at Urbana-Champaign Urbana, DL 61801, USA

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982367

Online ISBN: 9780470291269

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Keywords:

  • monohydtate;
  • humidity;
  • microporosity;
  • micrograph;
  • borosilicate

Summary

Calcium phosphate cement makes a suitable material to be used for craniofacial and orthopedic repairs because of its biocompatibility, bioresorbability and quick setting properties. These materials have an advantage over polymers and metals in that they are non-toxic and lightweight However, the low strength of calcium phosphate prohibits its use in stress bearing bone joints. This study investigates the improvements in mechanical properties of calcium phosphate cement by reinforcements. Monocalcium phosphate monohydrate (Aldrich Chemicals, Milwaukee, WI) and β-tricalcium phosphate, synthesized by the organic steric entrapment method, were the primary components of the cement Upon setting the cement transformed into brushite. β-TCP and cement after setting, were analyzed by X-ray analysis, EDS. Two different types of reinforcements were used, namely, (a) chopped hydroxyapatite (HA) fibers, and (b) borosilicate glass spheres. Rod shaped particles (less than 500 μm in length) were made by chopping the sintered HA fibers (about 115–120 μm in diameter). Borosilicate glass spheres, prepared by glass melting methods, had diameters in the range of 25 to 70 μm. Samples were prepared with different weight fractions of the reinforcements, and tested both in flexure and compression mode. Effects of size, shape, and weight fraction of the inclusions on the strength of the biocomposite are discussed.