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:
Feb. 02, 1993
Filed:
Apr. 05, 1989
Applicant:
Inventors:
Assignee:
Dentsply G.m.b.H., Dreleich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
523105 ; 523115 ; 523116 ; 523117 ; 524299 ; 524430 ; 4332281 ;
Abstract
A heat cured pasty composition adapted to form a dental veneer which is resistant or immune to interdental cracks while in use on crowns and bridges. The composition includes polymerizable urethane-acrylic monomer, inorganic fillers, pyrogenic silica, heat activated polymerization initiators, and fractured organic filler particles. Heat polymerization of the composition above about 100.degree. C. forms a polymer which has a microhardness of at least HV 0.1/10 18.0 Kp/mm.sup.2, and an impact strength of at least 2.0 KJ/m.sup.2.