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.

Date of Patent:
Mar. 28, 2017

Filed:

Dec. 23, 2011
Applicants:

Stephan Dierkes, Bremen, DE;

Severin Seifert, Bremen, DE;

Roland Strietzel, Lilienthal, DE;

Inventors:

Stephan Dierkes, Bremen, DE;

Severin Seifert, Bremen, DE;

Roland Strietzel, Lilienthal, DE;

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C 13/00 (2006.01); A61C 13/20 (2006.01); A61C 13/08 (2006.01); C04B 28/06 (2006.01); A61C 13/34 (2006.01); C04B 14/10 (2006.01); B29L 31/00 (2006.01); B29C 33/38 (2006.01); C04B 14/06 (2006.01); C04B 111/00 (2006.01); C04B 111/32 (2006.01);
U.S. Cl.
CPC ...
A61C 13/0004 (2013.01); A61C 13/081 (2013.01); A61C 13/20 (2013.01); C04B 28/06 (2013.01); A61C 13/34 (2013.01); B29C 33/3842 (2013.01); B29C 33/3857 (2013.01); B29L 2031/7536 (2013.01); C04B 14/06 (2013.01); C04B 14/062 (2013.01); C04B 14/10 (2013.01); C04B 2111/00836 (2013.01); C04B 2111/00939 (2013.01); C04B 2111/32 (2013.01);
Abstract

A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of g) working the dental restoration (D), and h) veneering the dental restoration (D). A novel embedding compound (EM) is also described that has no expansion or at least is only a slight expansion on setting.


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