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INJECTABLE CEMENT COMPOSITION FOR ORTHOPAEDIC AND DENTAL USE

  • US 20100050902A1
  • Filed: 11/12/2009
  • Published: 03/04/2010
  • Est. Priority Date: 03/01/2007
  • Status: Abandoned Application
First Claim
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1. A method of preparing a hydraulic ceramic precursor powder based on calcium aluminate and/or calcium silicate and zirconium and/or an inert filler material for orthopaedic and dental use, which powder comprises:

  • 55-65 wt-% of calcium aluminate;

    35-45 wt-% of zirconium oxide and/or an inert filler material, and;

    0.5-5 wt-% of micro-silica;

    wherein said components are based on the total amount of the precursor powder, calcium aluminate is constituted by more than 70 atomic % of CaOAl2O3 and less than 30 atomic % of one or more of the phases (CaO)12(Al2O3)7, (CaO)3Al2O3, CaO(Al2O3)2, CaO(Al2O3)6, and CaO—

    Al2O3 glass phase, and wherein the precursor powder is kept at a relative humidity of below 60% during manufacturing and packaging thereof.

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