Bone replacement part made of glass ionomer cement
AssigneeThera Patent GmbH & Co. KG Gesellschaft fur Industrielle Schutzrechte
InventorsJan Helms, Gotz Geyer, Erich Wanek, Werner Zollner, Oswald Gasser
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Abstract
Bone replacement parts consisting of glass ionomer cement are superior to those made of ceramics especially since they may easily be produced and machined using common grinding and milling tools. The required prosthesis part may therefore be formed of freshly mixed glass ionomer cement during the respective operation, or an industrially prefabricated formed body approximating the idealized shape of the bone part to be replaced may be adapted to the anatomic conditions given.
Claims17
An implant for replacing defective bone parts, the implant having a predetermined shape, wherein the implant is shaped intraoperatively and finished by curing extracorporally, or is both shaped and cured extracorporally, the implant being a non-foamed, non-porous, glass ionomer cement comprising:
- (a) an aluminum fluorosilicate glass which forms by acid decomposition, metal ions causing cross-linking of (b),
- (b) a polymer containing acid groups selected from the group consisting of sulphonic, phosphonic, and carboxylic acid, and
- (c) water.
Dependencies are inferred from the claim text.