Sirona Dental Systems Gmbh

Dentsply Sirona Inc.

Kai Lindenberg

Ciamak Abkai

Ulrich Schulze-Ganzlin

Christian Beckhaus

Stefan Wundrak

Johannes Ulrici

Wolf Blecher

Franziska Riversa

Björn Ludwig

The present invention relates to an intraoral X-ray sensor for use with an intraoral X-ray system having an automatic exposure control (AEC) functionality, characterized in that the intraoral X-ray sensor includes an exposure analysis unit, an imaging X-ray detector, and a communication interface, wherein a scout shot or scout video stream received from the imaging X-ray detector is analyzed by the exposure analysis unit in the intraoral X-ray sensor in order to record information on the exposure level of the scout image or video stream and to forward this information by means of the communication interface to a decision unit of the intraoral X-ray system, which is arranged externally to the intraoral X-ray sensor, and adapted for evaluation and decision of further exposures.

Intraoral X-ray sensor for automatic exposure control

An apparatus for real-time visualizing a movement of a lower jaw versus an upper jaw including: an input interface for receiving a two-dimensional image signal of the craniomaxillofacial area of the patient from a camera and a three-dimensional jaw model of the craniomaxillofacial area of the patient being precalculated based on volume data; a registration unit for registering the three-dimensional jaw model with the two-dimensional image signal in a first jaw position of the lower jaw versus the upper jaw and in a second jaw position of the lower jaw versus the upper jaw; an imaging unit for generating a two-dimensional depth-view of the craniomaxillofacial area from the three-dimensional jaw model based on the conducted registrations and the two-dimensional image signal, the two-dimensional depth-view including a structure underlying an image area of the two-dimensional image signal; and an output interface for outputting the two-dimensional depth-view.

Apparatus for real-time visualizing a movement of a lower jaw versus an upper jaw in a craniomaxillofacial area of a patient in dental diagnostics

The invention relates to a dental x-ray imaging system for producing intraoral x-ray images, in particular of dental patient tissue, with the aid of an intraoral x-ray sensor, which can be placed in the oral cavity in the beam path of an x-ray emitter positioned outside the oral cavity, wherein the x-ray imaging system is configured to record two or more temporally sequential individual x-ray images and to create an overall x-ray image from said individual images in such a way that the results of the exposures of the x-ray images are combined and a motion occurring between and/or during the sequential individual x-ray images is compensated.

Dental x-ray imaging system for producing intraoral x-ray images

The invention relates to a method for providing a first and a second digital panoramic layer image optimized for a comparison, wherein the first and second panoramic layer images each have multiple projections detected and stored for them by means of at least one digital detector during an at least partial revolution of a recording unit around an object to be recorded, and the first and second panoramic layer images are each produced from the multiple projections in accordance with a computation code and by forming a panoramic layer. Differences between the first and second panoramic layer images are minimized by altering at least one parameter of the computation code for fresh production of the first and/or second panoramic layer image. In addition, the invention relates to a corresponding apparatus.

Method and apparatus for providing two digital panoramic layer images

The invention relates to a method for capturing a three-dimensional x-ray image () of an object () by means of an x-ray system () comprising an x-ray source (), an x-ray detector () and a shutter matrix (), the shutter matrix () having a plurality of shutter elements (), the x-ray absorption properties of which are controllable. In the first method step, at least one region () to be captured of the object () is defined, wherein settings are planned for the individual shutter elements () of the shutter matrix () for different rotary positions (), taking into account the defined area () to be captured. Then, a plurality of two-dimensional x-ray images is captured from the planned rotary positions () during at least one partial rotation () using the planned settings of the shutter elements (), wherein the overall three-dimensional x-ray image () of the area () to be captured is generated from the individual two-dimensional x-ray images.

Method for capturing a three-dimensional x-ray image

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 checking tooth positions, wherein an initial three-dimensional volume exposure () of teeth () to be checked is implemented, wherein the position and orientation of the teeth () to be checked are determined based on the initial volume exposure (); wherein the teeth to be checked are natural teeth () comprised of tooth stumps () and tooth roots () and/or are artificial teeth comprised of artificial tooth stumps and implants; wherein the positional relationship and orientation of the tooth stumps () relative to the tooth roots () and/or to the implants are determined in particular. For checking, a first optical surface monitoring exposure () of the teeth () is implemented, wherein using the positional relationship thus determined the position and orientation of the tooth roots () and/or of the implants relative to one another and/or relative to a jawbone () are determined based on the position of the surfaces () of the tooth stumps () from the optical surface monitoring exposure ().

Method for checking tooth positions

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.

Method, apparatus, and computer readable medium for removing unwanted objects from a tomogram

The invention relates to a dental X-ray system for the creation of a radiograph (), comprising an imaging unit () for surface detection. The imaging unit () has a light source (), which produces a polychromatic beam of visible light ('), a masking edge (), which extends at least partially into the polychromatic beam of light (&#x2032;) between the light source () and the recording area () for the purpose of creating a shadow demarcation line () in said recording area (), and an optical detector (), wherein the light source (), the masking edge () and the optical detector () are mounted directly on the supporting device () and/or on the X-ray source () and/or on the X-ray detector () and can be moved together therewith past the recording area () in circular motion.

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Wersau, Germany

Kai Lindenberg