Patent ID: 6939136

Claim:
Method for the preparation of dental bridges of sintered material fired with porcelain, by which on the basis of an impression of a relevant implant area there is formed a physical or virtual bridge item in a three-part formation comprising two bridge anchors and a connecting intermediate link (pontic), which parts are reproduced in a tightly-sintered oxide and thereafter bound together with a binding agent for the formation of a bridge frame on which a hard ceramic coating is fired, wherein as a binding agent use is made of a suspension of basic material for formation of said tightly-sintered material, namely aluminium oxide, zirconium oxide or other metal oxides, which can be sintered and infiltrated with glass, and in that the hereby assembled bridge frame is heated for direct sintering of the applied binding agent, after which the thus stabilized self-supporting bridge item, at least in the assembly areas, is given an application of a dispersion of a powder of an infiltration material of glass which, with renewed heating in the bridge frame, is brought to melting and infiltration in the sinter-fired binding agent.