Injection Behavior of Brushite Bone Cement Prepared with Granulated P-Tricalcium Phosphate

摘要

The injection behavior of p-tricalcium phosphate(Ca3(PO4)2: β-TCP)based cement was improved through the granulation of β-TCP.Dense β-TCP granules were obtained by heat treatment after spray drying.The fraction of injected paste under loaded mass in the syringe was measured while varying the granular fraction and the heat treatment temperature of β-TCP.The increase in granular fraction and heating treatment temperature should reduce the amount of setting agent required to wet the granules.As the surplus setting agent could be used by the powdery β-TCP to reduce the viscosity,improved injectability was achieved.The prepared pastes exhibited normal setting behavior by forming a brushite phase.