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Regular Papers

Preparation and compressive strength of calcium phosphate based cement dispersed with polycrystalline ceria doped tetragonal zirconia

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Pages 141-145 | Published online: 18 Jul 2013
 

Abstract

The preparation and strength of a calcium phosphate based cement with and without dispersed particles of polycrystalline 12 mol-%CeO2 doped tetragonal zirconia (12Ce–TZP) were investigated. A cement mixture of α-tricalcium phosphate (α-Ca3 (PO4 )2 ) and tetracalcium phosphate (Ca4 (PO4 )2O) with a Ca/P ratio of 1·67 transformed completely to hydroxyapatite after curing under water for 7 d at 38°C. The compressive strength of a cement without dispersed 12Ce–TZP particles cured for 4 d at 38°C was ∼11·1 MPa but increased to ∼16 MPa by dispersing 3 wt-%12Ce–TZP particles, of average diameter 40 μm, which were treated in 10M NaOH and/or 0·01M Ca5 (PO4 )2 gel solutions prior to dispersion.

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