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Synthesis of orthopedic cement by the addition of anhydrous calcium hydrogen phosphate to calcium sulfate hemihydrate.

Commercially available calcium sulfate hemihydrate (CSH) powders were mixed with anhydrous calcium hydrogen phosphate (monetite) in order to develop a novel resorbable orthopedic cement. The setting solution, distilled water, converted the CSH into gypsum as proven by an X-ray diffraction. This conversion into gypsum is what gives the cement its high compressive strength. The addition of monetite gives the cement a high bioresorbablity and remodeling ability that is not present in the pure, CSH cements on the market today. Instead of merely dissolving into powder when placed in body fluids like CSH cements, the phosphate-enhanced cement in vivo may convert into apatitic bone-like structures.
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Author:Swiantek, Jennifer
Publication:Bulletin of the South Carolina Academy of Science
Article Type:Brief article
Date:Jan 1, 2005
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