The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1996
Filed:
Mar. 29, 1994
Dentsply G.m.b.H., Dreieich, DE;
Abstract
A bonding dental ceramic material and method of use thereof is provided. The bonding dental ceramic material includes at least one network former and between about 8 and 17 percent by weight B.sub.2 O.sub.3. The bonding dental ceramic material does not contain more than 5% by weight of opacifier and/or pigment, and is adapted to bond to titanium or titanium alloy with a bond strength of at least 20 MPa. Preferably the bonding dental ceramic material has a melting point less than 800.degree. C. and includes a fluxing agent. This bonding dental ceramic material is used to make dental crowns and bridges. The bonding dental ceramic material is applied to titanium or titanium alloy and fired at less than 800.degree. C. Then an opaque dental ceramic material including at least one network former and more than 5% by weight of opacifier and/or pigment but less than 5% by weight B.sub.2 O.sub.3 is applied to the bonding dental ceramic material and fired at less than 800.degree. C. Preferably the bonding dental ceramic material has a melting temperature of less than 830.degree. C., and does not have more than 5% by weight pigments and/or opacifiers, or more than 0.5% by weight fluoride.