Dentsply Sirona Inc.

Sirona Dental Systems Gmbh

Ciamak Abkai

Kai Lindenberg

Volker Rasche

Ulrich Schulze-Ganzlin

Johannes Ulrici

Klaus Stöckl

Jan Paul

Tilman Niederführ

Tim Braun

Björn Ludwig

Guido Scheibl

Disclosed is a method for calibrating at least one 2D X-ray image of an object to be imaged, which is recorded by an X-ray device in that X-rays produced by an X-ray source radiate through the object and are recorded by an X-ray detector. An already existing 3D model of a structure of the object is compared to the 2D X-ray image, wherein an actual image positional relationship of the X-ray source and the X-ray detector relative to the object, and/or relative to one another, is determined for the 2D X-ray image.

Method for calibrating an X-ray image

Disclosed herein is a method for capturing a dental object with an object volume, in particular, at least one part of a maxilla and/or a mandible, with the sue of an MRT apparatus. A plurality of MRT segment images, which depict the defined segmented volume regions are acquired by an MRT apparatus within a measurement volume of the MRT apparatus. The segmented volume regions overlap no more than partially. In this case a target surface is defined or has already been defined. Then a two dimensional composite image, which corresponds to a two dimensional aggregate image through the target surface within the object volume of the dental object, is generated computer-aided from the individual MRT segment images.

Method for capturing a dental object

In a method for image enhancement of image data of a dental image generation system, comprising a first image generating unit () for producing two-dimensional image data and a second image generating unit () for producing three-dimensional image data, wherein for an object to be examined () the image generation system provides both two-dimensional image data and three-dimensional image data, it is in particular provided that the two-dimensional image data and the three-dimensional image data are merged in such a way that the image quality and/or the information content of the two-dimensional image data or of the three-dimensional image data is improved.

Method for image improvement of image data from a dental image generation system

The invention relates to an orthodontic diagnostic method wherein at least one initial two-dimensional X-ray image () of a first zone () of a head () is taken. Then at least one three-dimensional X-ray image () of a second zone () of a dental situation is taken, and the three-dimensional X-ray image () is combined with the initial two-dimensional X-ray image () using a registration process in order to obtain a full image ().

Orthodontic diagnostic method

The invention relates to a method for producing an x-ray image () of an object () by means of an x-ray device (). An x-ray source () and an x-ray detector () are moved about an object () during an at least partial circulation (), and the x-ray beams () which are generated by the x-ray source () and pass through the object () are detected from multiple different directions by means of the x-ray detector (). In the process, at least one optical camera () captures the object () during the circulation, wherein an optical image () is produced. The optical camera () has a rigidly defined position relative to the x-ray source () and/or the x-ray detector (). The optical image () is then used to determine a movement trajectory of the object () relative to the x-ray source () and/or the x-ray detector ().

Method for producing an X-ray image

The invention relates to a method for planning or for checking the planning of a dental and/or a maxillofacial treatment, wherein at least one video recording of an object () is recorded by means of at least one video camera (). A patient model () is available which comprises image data of the object (), wherein the video recording is virtually coupled to the patient model () in such a way that a viewing direction () of the view of the patient model () is changed in dependence on a changing recording direction () of the video recording when the video camera () is moved in relation to the object ().

Method for planning a dental treatment

A method, apparatus, and computer readable medium for removing an unwanted object from an image volume are provided. Volumetric data of an object of study is generated in a radiographic scan. Volumetric data of the unwanted object is obtained. The two sets of volumetric data are registered in a common coordinate system. The unwanted object is removed from the volumetric data of the object of study to create modified volumetric data of the object of study. Data from voxels surrounding the removed unwanted object may be used to populate voxels corresponding to the unwanted object with interpolated data. A plurality of forward projections are performed on the modified volumetric data of the object of study, and a tomogram with the unwanted object removed is constructed.

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Heddesheim, Germany

Ciamak Abkai