3m Innovative Properties Company

Michael A Kraemer

Bernd K Burger

Guenter Hertlein

Michael K Schaaf

Thomas Sprengart

Till Meurer

Stefan Hoescheler

Markus P Salex

Holger Hauptmann

Martin Goetzinger

Bastian P Kirchner

Sebastian Guggenmos

Josef A Waizenegger

Thomas B Hiebel

Josef Waizenegger

One embodiment of the present disclosure is directed to a method used in the making of a dental restoration, which comprises the steps of determining a tooth flat at a patient's tooth, and evaluating the tooth flat to provide a geometric characteristic data of the first tooth flat. The characteristic data are used to provide a computer model of a jaw motion under occlusal contact between teeth in the patient's upper and lower jaws. In one embodiment, the method helps facilitating the preparation of dental restorations.

Method in the making of a dental restoration

The invention includes a support frame for producing a dental workpiece. The frame has a Z axis and comprising wall sections defining a hole that extends along the Z axis through the frame. At least one of the wall sections comprises an adhesive-directing surface extending along the Z axis in a non-parallel relationship. Such a configuration provides optimized methods for affixing a blank to the support frame and optimized properties of the blank after fixation to the support frame.

Device for producing a dental workpiece

In general the invention is directed to computer implemented systems and methods for assessing the size of a dental restoration blank. In one embodiment, the invention provides a computer-readable medium comprising dental CAD application code which implements the following procedures: generating in a computer memory a three dimensional digital rendering of a dental restoration; generating in the computer a digital rendering of a blank volume, the blank volume corresponding in dimensions to the usable volume of a blank that is available for milling, and the blank volume having a boundary corresponding to its edges; calculating areas of the dental restoration which are beyond the boundary; and providing the calculated areas to a calling function, user, user interface, or module.

CAD system for assessing blank size

A method of making a dental restoration is provided. The dental restoration comprises a frame and a veneer. An inner veneer surface and an outer frame surface are adapted to be mated with one another to form the dental restoration. The method in particular comprises steps of (a) providing an outer veneer surface; (b) determining an outer frame surface, based on the outer veneer surface; (c) determining an inner veneer surface, based on the outer frame surface; and (d) providing an inner frame surface, based on a natural tooth surface. The method may be advantageous for rapid, precise and inexpensive manufacturing of a dental restoration.

Method of making a dental restoration from a frame and a veneer

The invention relates to the processing of data regarding the three dimensional shape of a dental prosthesis, having two prosthesis sections and a connector section, wherein the connector section is connected to the two prosthesis sections and is less stable than the two prosthesis sections. The method includes the steps of (a) determining a stability parameter and a stability criterion for the connector section, (b) calculating the actual value for the stability parameter from the data, (c) checking the connector section to determine whether the actual value fulfills the stability criterion, and if not, generating a warning signal is to the user.

Processing of shape data of a dental prosthesis

The invention relates to a method based on a CAD system consisting of producing a skeleton () satisfying pre-defined stability specifications on the basis of a positive template. For this purpose, the control surfaces, which are calculated on the basis of predetermined coordinates of said positive template, are represented on an output device together with the modified surface shape of an implant.

CAD-system for dental prostheses

The present invention is related to systems and methods for manufacturing dental prostheses, such as bridges and crowns. In particular, the present invention is directed to novel methods for managing machining jobs for manufacturing dental prostheses in a system having a plurality of machining devices.

System and method for manufacturing dental prostheses

The present invention relates to the production of dental replacement using a CAD system. In particular, the present invention relates to the design of the three-dimensional shape of a dental prosthesis, which has, for example, two prosthesis sections and a connector section, the connector section being connected to the two prosthesis sections.

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Landsberg am Lech, Germany

Michael A Kraemer