Dentistry – Method or material for testing – treating – restoring – or... – Crown
Reexamination Certificate
2005-09-06
2005-09-06
O'Connor, Cary E. (Department: 3732)
Dentistry
Method or material for testing, treating, restoring, or...
Crown
C264S019000, C433S214000
Reexamination Certificate
active
06939136
ABSTRACT:
In the formation of dental bridges, the preferred material is a tightly-sintered aluminium oxide, and it is normal practice that the necessary bridge parts, namely two bridge anchors and a connecting intermediate link (pontic), are formed by a specialist and thereafter joined together in a dental laboratory where use is made of a melted glass as binding agent, after which the assembled bridge item is fired with porcelain. With the invention it has been found that considerable advantages can be achieved when a dispersion of said aluminium oxide or a material related herewith is used as binding agent, which after application between the assembly surfaces is heated until loose sintering is achieved, after which an infiltration of the sintered material by the glass is brought about by renewed or additional heating. There is hereby achieved a more simple working process as well as a stronger binding both between the assembly surfaces as well as between the bridge item and the porcelain with which it is fired. The binding agent is preferable mixed with an adhesive material which eases the intermediate work with the bridge item, and which is completely degassed by the heating in the said sintering process.
REFERENCES:
patent: 4772436 (1988-09-01), Tyszblat
patent: WO99/13795 (1999-03-01), None
Anon.;VITA In-Ceram Directions for use, Presentation materials (16 pages); VITA Zahnfabrik, Postfach 13 38, D-7880 Bad Säckingen, GERMANY (undated).
Anon.;Procera AllCeram Bridge User's Manual; Publication (10 pages); Nobel Biocare AB, PO Box 5190, SE-402 26 Goteborg, SWEDEN (undated).
Anon.;DC-ZIRKON: The pure ceramic; Publication (2 pages); DCS Dental AG, Gewerbstrasse 15, Postfach 104, CH-4123 Allschwill, SWITZERLAND (undated).
Anon.;Cercon smart ceramics; Publication (12 pages in German); Deguusa Dental GmbH, Post fach 1364, D-63403 Hanau, GERMANY (undated).
Anon.;VITA In-ceram Spinell; Misc. advertising materials (16 pages in German); VITA Zahnfabrik H. Rauter GmbH, Postfach 1338, D-79704 Bad Säckingen, GERMANY (undated).
Anon.;CEREC inLab; Advertising material (12 pages in German); Sirona dental Systems GmbH, Fabrikstrasse 31, D-64625 Bensheim, GERMANY (undated).
Creighton Wray James
K L ApS
Narasimhan Meera P.
O'Connor Cary E.
Stokes Candice C.
LandOfFree
Dental bridge assembly and binding agents therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dental bridge assembly and binding agents therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dental bridge assembly and binding agents therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3408601