Bioactive calcium pyrophosphate glasses and glass-ceramics.
Calcium phosphate glass-based materials in the pyrophosphate region are briefly reviewed. Calcium pyrophosphate glasses can be prepared by including a small amount of TiO(2) (<or=10mol%). Bonelike apatite forms on some of the glasses in simulated body fluid. By heating powder-compacts of the glasses, they are crystallized and subsequently are sintered, resulting in fabrication of high-strength glass-ceramics with machinability; they are easier to be machined using conventional tools in comparison with conventional calcium phosphate ceramics. beta-Ca(2)P(2)O(7) crystal formed in the glass-ceramics plays an important role in the machinability. Their apatite-forming ability in simulated body fluid is drastically enhanced after autoclaving in distilled water. The glass-ceramics can be easily coated on a new beta-type titanium alloy using a conventional glazing technique.
Kasuga
Toshihiro
T
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan. kasuga.toshihiro@nitech.ac.jp
D000497:Alloys; D000818:Animals; D001031:Apatites / Q000737:chemistry; D001672:Biocompatible Materials / Q000737:chemistry*; D001696:Biomechanical Phenomena; D001826:Body Fluids; D001842:Bone and Bones / Q000601:surgery; D002131:Calcium Pyrophosphate / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D006801:Humans; D066298:In Vitro Techniques; D009682:Magnetic Resonance Spectroscopy; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D019736:Prostheses and Implants; D013059:Spectrum Analysis, Raman; D013499:Surface Properties; D014025:Titanium
D000497:Alloys; D001031:Apatites; D001672:Biocompatible Materials; C009495:titanium dioxide; C023506:Glass ceramics; D014025:Titanium; D002131:Calcium Pyrophosphate