Ceramics such as calcium sulfate hemihydrate
(plaster of Paris), silicate-based glasses, and calcium sulfate dihydrate (gypsum), and calcium phosphates are used for producing implant devices and bone graft.
Calcium sulfate hemihydrate
(CSH, CaSO4 x 1/2 H2O) powders are currently being produced as a bone substitute, and many corporations such as Smith & Nephew and Wright Medical Technology are marketing self-setting, orthopedic cements based on pure CSH.
Partially reacted calcium sulfate hemihydrate
particles and completely reacted particle "shells" can also be clearly observed in the 2-D image.
The product provides a drug delivery system with a predictable absorption rate via calcium sulfate hemihydrate
, a moldable bone filler.
Commercially available calcium sulfate hemihydrate
(CSH) powders were mixed with anhydrous calcium hydrogen phosphate (monetite) in order to develop a novel resorbable orthopedic cement.