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Self-Setting Calcium Phosphate Bone Cement Preparation, Characterization and Drug Delivery for Skeletal System: Self-Setting Calcium Phosphate Bone Cement
Abstract
The reactivity of acid base cements forming hydroxyapatite (HA) such as, ß-tricalcium phosphate (ß-TCP) and dicalcium phosphate dehydrate (DCPD). Amorphous calcium phosphates, prepared by precipitation from supersaturated solutions, can also react to form apatitic cements since they are thermodynamic unstable with respect to HA and have a setting reaction more independent of particle size. Calcium phosphate cement containing an antibiotic can be used for filling bone defects and to ensure local antibiotherapy. Therefore, in the present chapter proposal, cement paste was prepared by combining cement liquids comprised of Na2HPO4 with cement powders. Gentamicin sulfate was also loaded on the cements and its in vitro release was evaluated over a period of time. The cement setting times were compared before and after drug addition. According to results, the initial and final setting times of samples increase after drug addition.
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