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Related Experiment Videos

Cement from magnesium substituted hydroxyapatite.

K J Lilley1, U Gbureck, J C Knowles

  • 1Biomaterials Unit, School of Dentistry, University of Birmingham, B4 6NN, UK.

Journal of Materials Science. Materials in Medicine
|May 6, 2005
PubMed
Summary
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Magnesium-substituted brushite cement shows improved properties for bone grafting. Incorporating magnesium reduces hydrolysis, enhancing its potential as a resorbable bone graft material.

Area of Science:

  • Biomaterials Science
  • Orthopedic Research
  • Crystallography

Background:

  • Brushite cement, a potential bone graft material, exhibits higher solubility and resorbability than apatite cements.
  • Previous work demonstrated brushite cement formation from nanocrystalline hydroxyapatite and phosphoric acid.

Purpose of the Study:

  • To synthesize and characterize magnesium-substituted brushite cement.
  • To investigate the effect of magnesium incorporation on cement properties and hydrolysis.

Main Methods:

  • Reaction of nanocrystalline magnesium-substituted hydroxyapatite with phosphoric acid.
  • Analysis of cement composition, strength, and hydrolysis behavior.

Main Results:

  • Magnesium substitution significantly influenced cement composition and mechanical strength.

Related Experiment Videos

  • The presence of magnesium reduced brushite hydrolysis, limiting the formation of hydroxyapatite (HA).
  • Magnesium ion concentration in the cement's liquid phase was controlled by the apatite dissolution rate.

    • Conclusions:

    • Magnesium substitution offers a method to control brushite cement characteristics.
    • This approach allows for the controlled release of ions, potentially improving clinical performance.
    • Magnesium-substituted brushite cement shows promise as an advanced bone graft material.