摘要:
Compositions useful in the prevention and treatment of osteoporosis and for bone and fracture repair. Slow-releasing calcium phosphate-based materials are disclosed, incorporating Mg, Zn, F and carbonate, which will promote bone formation and inhibit bone resorption and thus be agents for the cited uses.
摘要:
The present invention provides a functionally graded bioactive glass/ceramic composite structure or bioactive glass/ceramic/bioactive glass sandwich structure for use in such applications as damage resistant, ceramic dental implants, immediate tooth replacement, endodontic posts, orthopedic prostheses, orthopedic stems, bone substitutes, bone screws, plates, and anchors, nonunion defects repair, alveolar ridge augmentation, missing small bone parts (e.g. fingers, toes, etc), maxilla facial reconstruction, spinal fusion, and scaffolds for bone regeneration, comprising a residual bioactive glass or glass-ceramic layer at all accessible surfaces, followed by an underlying graded glass-ceramic layer, and then an dense interior ceramic. Further, the invention provides methods for making the same structure.
摘要:
A composition and method for producing interconnective macroporous, resorbable and injectable calcium phosphate-based cements (MICPCs). The composition of the invention sets to poorly crystalline apatitic calcium phosphate after mixing a powder component and an aqueous solution. The multiphasic calcium phosphate components in the cement resorb at different rates allowing the timely replacement by new bone. The interconnected macroporosity in the cement allows for vascularization, entrapment of growth factors, cell colonization and tissue ingrowth. This MICPC can be used for dental and medical applications relating to bone repair, augmentation, reconstruction, regeneration, and osteoporosis treatment, and also for drug delivery, and as scaffolds for tissue engineering.
摘要:
An adherent bioactive calcium phosphate coating is formed on a titanium or titanium alloy substrate by immersing the substrate in an acidic calcium phosphate solution to form a non-apatitic calcium phosphate coating on the substrate. In a second step the coated substrate can be converted to a less reactive coating by being immersed into a basic or neutral solution to convert the coating into an apatite. However if a relatively reactive coating is desired, the second step can be dispensed with.
摘要:
A method for forming a highly adherent coating of a desired calcium phosphate phase on titanium-based substrates for use as orthopedic and dental implants. The calcium phosphate phase coating is electrochemically deposited onto the substrate from a metastable calcium phosphate electrolyte solution using a modulated electrical potential under pH, temperature and electrolyte composition and concentration conditions favorable for forming the desired calcium phosphate.