Addition of cohesion promoters to calcium phosphate cements

Many calcium phosphate cements (CPC) pastes tend to disintegrate upon early contact with blood or other aqueous (body) fluids, which inhibits the use of these materials for clinical use as for bone repair, reconstruction and augmentation. In studies on CPCs based on tetracalcium phosphate and dicalc ium hydrogen phosphate others have suggested to use sodium alginate, cellul ose derivatives or chitosan derivatives dissolved in the cement liquid for improving the cohesion of CPC pastes. In this study 10 other organic compou nds were shown to act as cohesion promoters in the case of CPCs based on al pha-tertiary calcium phosphate as the main active ingredient. (C) 1999 Else vier Science Ltd. All rights reserved.