IP Library › Granted Patent US 10,299,898
Granted Patent B2
US 10,299,898 · App. 14/407,387 · Granted May 28, 2019

Method for preparing a partial or full dental prosthesis

Inventors: Eva Kerschensteiner (Bad Säckingen, DE); Urban Christen (Bad Säckingen, DE)
Assignee: Vita Zahnfabrik H. Rauter GmbH & Co. KG
A61C13/01A61C9/004A61C9/0006A61C13/0003A61C13/0004A61C13/0006A61C13/0022A61C13/082B33Y10/00G16H20/40
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Quick Facts
Patent No.
US 10,299,898
App. No.
14/407,387
Filed
Dec 11, 2014
Granted
May 28, 2019
Kind
B2
Art Unit
3772
USPC
433/196
Abstract

A method for preparing a partial or full dental prosthesis comprising 1.1. acquiring a patient's oral situation by taking an impression or by digital recording; 1.2. if required, digitizing the patient's oral situation; 1.3. selecting the teeth forming the dental prosthesis from a library of teeth or groups of teeth to obtain a virtual set-up of the teeth, which is positioned virtually in a space that takes the acquired patient's situation into account; 1.3.1 said library contains designs of dental arches, tooth shapes, tooth sizes 1.3.2 said library contains designs of the gingiva, and 1.3.3 said library contains total set-ups and/or modular set-ups for all of Angle's bite classes; 1.4. if required, modifying the set-up obtained from the library; 1.5. virtually embedding the teeth arranged in the virtual set-up in a virtual gingiva; 1.6 producing the real prosthesis.

Claims (19)

1. A method for preparing a partial or full dental prosthesis comprising:

acquiring measurements of an oral cavity by a digital recording of the oral cavity using an imaging device;

preparing, with a computer, a digital model of the dental prosthesis taking into account the acquired measurements,

preparing, with the computer, a virtual gingiva based on the acquired measurements by selecting a matching gingiva design from a digital library containing designs of gingiva,

preparing, with the computer, a virtual set-up of teeth based on the acquired measurements by selecting a matching set of teeth from the digital library, the digital library including designs of dental arches, tooth shapes, tooth sizes, and groups of teeth and said library contains total set-ups and/or modular set-ups for Angle's bite classes;

if required, modifying the virtual set-up of teeth with the computer to obtain a fit with the acquired measurements;

virtually embedding the teeth arranged in the virtual set-up in the virtual gingiva; and

producing the real prosthesis to correspond to the set-up.

2. The method according to claim 1 , wherein said partial or full dental prosthesis is a removable, conditionally removable or permanently attached denture.

3. The method according to claim 1 further comprising individually adapting the dental arch to the individual width of the patient's dental arch by taking virtual hinges into account.

4. The method according to claim 1 , wherein the virtual gingiva is based on acquired measurements that include measurements of palatal folds and the Ah line.

5. The method according to claim 1 , wherein said producing of the real prosthesis comprises

a. preparing a prosthesis base;

b. providing a support for prefabricated teeth receiving means; and

c. inserting prefabricated teeth into the support, followed by

d. preparing the total prosthesis.

6. The method according to claim 5 , wherein said total prosthesis is prepared by an additive production method.

7. The method according to claim 5 , wherein said prosthesis base is prepared by additive production or abrasive production.

8. The method of claim 1 wherein using the imaging device comprises making a camera recording, performing computer tomography, or performing ultrasound.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 28, 2015
From: KERSCHENSTEINER, EVA; CHRISTEN, URBAN
To: VITA ZAHNFABRIK H. RAUTER GMBH & CO. KG
Reel/Frame 035730/0862 →
Priority Claims (1)
EP 12172219 · Jun 15, 2012 · regional
Continuity (2)
Provisional Application 61660266 · Jun 15, 2012
Related Publication 20150132718A1 · May 14, 2015