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:
Aug. 30, 2022
Filed:
May. 19, 2016
Applicant:
Dentsply Sirona Inc., York, PA (US);
Inventors:
Markus Vollmann, Gelnhausen, DE;
Udo Schusser, Alzenau, DE;
Assignee:
DENTSPLY SIRONA INC., York, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 21/00 (2006.01); A61C 13/083 (2006.01); A61C 5/77 (2017.01); A61C 13/08 (2006.01); C03C 4/00 (2006.01); C03C 3/097 (2006.01); A61K 6/818 (2020.01); A61K 6/822 (2020.01); A61K 6/833 (2020.01); A61K 6/853 (2020.01); C03C 10/00 (2006.01);
U.S. Cl.
CPC ...
C03C 21/008 (2013.01); A61C 5/77 (2017.02); A61C 13/081 (2013.01); A61C 13/083 (2013.01); A61K 6/818 (2020.01); A61K 6/822 (2020.01); A61K 6/833 (2020.01); A61K 6/853 (2020.01); C03C 3/097 (2013.01); C03C 4/0021 (2013.01); C03C 10/0027 (2013.01); C03C 21/002 (2013.01); C03C 2204/00 (2013.01);
Abstract
The invention relates to a method to produce a dental structure with a cavity having a negative form of the structure, which is formed in an investment material, wherein flowable lithium silicate glass ceramic is pressed into the cavity. Thereby a compressive surface stress is created in the ceramic structure through the replacement of lithium ions by alkali ions, in that the model is enriched with alkali compounds and/or the model is covered with a layer of a material containing alkali ions.