Addition of cohesion promotors 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 dicalcium hydrogen phosphate others have suggested to use sodium alginate, cellulose derivatives or chitosan derivatives dissolved in the cement liquid for improving the cohesion of CPC pastes. In this study 10 other organic compounds were shown to act as cohesion promotors in the case of CPCs based on alpha-tertiary calcium phosphate as the main active ingredient.