Abstract: The present disclosure relates to a computer-implemented method for improving the accuracy of a digital three-dimensional representation of a dental object during scanning, the method comprising the steps of: generating a digital three-dimensional (3D) representation of the dental object based on registration and stitching of a plurality of 3D scan patches; obtaining new 3D scan patches in real-time during scanning; registering said new 3D scan patches to the digital 3D representation during scanning, whereby said scan patches form part of the digital 3D representation; selecting a sub-set of 3D scan patches among the obtained or registered 3D scan patches, wherein said selection is performed during scanning; and re-registering one or more 3D scan patches forming part of the digital 3D representation, wherein said re-registering is based on applying one or more transformations to the selected sub-set of scan patches, whereby the accuracy of a digital 3D representation is improved.

Abstract: The present disclosure relates to a computer-implemented method and an intraoral scanning system. The computer-implemented method for removing a glare defect in a processed image scan data, including: receiving a plurality of image scan data of a dental object, processing one or more image scan data of the plurality of image scan data into a processed image scan data, wherein the processed image scan data includes a plurality of pixels, determining a plurality of defect pixels in the processed image scan data by a glare detection algorithm, and, when a geometry of an arrangement of the plurality of defect pixels fulfils one or more geometry criteria, determining, non-glare image scan data by analysing pixels of the plurality of pixels, and replacing the processed image scan data in the plurality of defect pixels with the non-glare image scan data.

Abstract: A method includes receiving a first digital 3D dental model representative of a dental situation at a first time, receiving a second digital 3D dental model representative of the dental situation at a second time. Further, the method includes generating a difference map, where generating of the difference map includes obtaining values of geometric differences between the first digital 3D dental model and the second digital 3D dental model, identifying a greatest value of geometric differences from the values of geometric differences, generating a color scale including a plurality of discrete colors associated with the values of geometric differences, wherein colors of the plurality of discrete colors are separated by color scale threshold values, further wherein the color scale threshold values are generated based on the greatest value of geometric differences, and assigning the plurality of discrete colors to the values of geometric differences.

Abstract: The present disclosure relates generally to thermal management of a scanner, in particular a cooling system for a scanner. More specifically the present disclosure relates to a scanner wherein the cooling system is integrated, in particular a wireless intraoral scanner with integrated cooling. The present disclosure further relates to method for cooling the scanner. One embodiment relates to an intraoral scanner for scanning a dental object, comprising an outer shell housing defining a longitudinal axis of the scanner, the outer shell housing accommodating electronic components generating heat during use, and a cooling system for removing heat from the electronic components, the cooling system comprising a heat exchanger, such as a heat sink, and a fan.

Abstract: The present disclosure relates generally to a compact intraoral 3D-scanner. More specifically, the present disclosure relates to the field of satisfying a condition for a compact intraoral 3D-scanner, particularly such that intraoral 3D-scanning is optimally performed. The present disclosure relates further to a method of optimizing a compact intraoral 3D-scanner.

Abstract: The present disclosure relates to a 3D scanner system for scanning the oral cavity of a patient. In particular, the disclosure relates to feedback mechanisms and user interfaces of intraoral scanners. In some embodiments, the 3D scanner system includes an intraoral scanner including one or more reconfigurable buttons, wherein each reconfigurable button includes a force sensor, such as a strain gauge sensor; and wherein the intraoral scanner further includes a display configured for displaying one or more icons, texts, or animations, associated with the reconfigurable buttons, wherein the display covers the force sensors, and wherein the scanner system further includes one or more processors configured to generate 3D scan data of at least a part of the dental arch.

Abstract: A computer-implemented method for generating a corresponding 3D mesh representing a 3D object includes transforming an initial three-dimensional mesh into a planar mesh, wherein each vertex or edge of the planar mesh is a transformation of a vertex or edge from the initial three-dimensional mesh; and sampling the planar mesh to generate a plurality of samples such that each sample comprises a three-dimensional coordinate representing a point in a three-dimensional space derived and/or taken directly from the initial three-dimensional mesh, and a coordinate representing a position of the sample relative to other samples; and generating the sampled matrix based on the plurality of samples; and representing the sampled matrix as a corresponding 3D mesh.

Abstract: The present disclosure relates to an intraoral scanning device including a light source configured for emitting light; a beam splitter configured for outputting linearly polarized light of a predefined orientation, wherein the beam splitter is arranged such that light from the light source is transmitted through the beam splitter; an image sensor configured for acquiring one or more images; and a light absorbing unit for minimizing stray light on the image sensor, said light absorbing unit arranged on a surface of the beam splitter. The present disclosure further relates to an optical system for an intraoral scanning device, said optical system configured for minimizing stray light in the system.

Abstract: A computer-implemented method, a system, and computer readable medium for generating a digital dental workflow. The method includes: receiving a first workflow action selected from a plurality of workflow actions, the first workflow action including an action input; generating an action output at least partly based on the action input of the first workflow action; suggesting at least a second workflow action and a third workflow action from the plurality of workflow actions based on the action output generated by the first workflow action, wherein at least a part of the action output of the first workflow action at least partly represents an action input for each of the at least the second workflow action and the third workflow action; and generating the digital dental workflow upon a selection of the at least the second workflow action or the third workflow action.

Abstract: The present disclosure relates to a computer-implemented method and an intraoral scanning system for removing a glare defect in a processed image scan data, including: receiving a plurality of image scan data of a dental object produced by an intraoral scanner, processing one or more image scan data into a processed image scan data including a plurality of pixels, and determining a plurality of defect pixels by a glare detection algorithm. The glare detection algorithm may be configured to determine when a pixel value of each defect pixel fulfils one or more pixel value criteria, and, when a geometry of an arrangement of the defect pixels fulfils one or more geometry criteria. The method further includes, determining, by a glare-removal algorithm, non-glare image scan data by analysing pixels that are in vicinity to the defect pixels, and replacing the processed image scan data with the non-glare image scan data.

Abstract: A method, user interface and system for detecting and monitoring development of a dental condition. In particular, detecting and monitoring such a development by comparing digital 3D representations of the patient's set of teeth recorded at a first and a second point in time. For example, determining tooth movement for at least one tooth between the first and second point in time based on derived distances.

Abstract: A computer-implemented method for detecting tooth cracks on a digital 3D model of a dental situation includes receiving the digital 3D model of the dental situation, generating an input for a trained neural network for tooth crack detection, wherein the input includes at least a part of the digital 3D model with associated color information. The method further includes detecting a tooth crack on the at least part of the digital 3D model by applying the trained neural network to the generated input. Further, the method includes determining a severity level of the detected tooth crack based on fluorescence information associated with the at least part of the digital 3D model and displaying the at least part of the digital 3D model, the detected tooth crack and the severity level of the detected tooth crack.

Abstract: A three-dimensional optical scanning system for scanning a three-dimensional dental object, the system including a first scanning station configured to receive a first three-dimensional dental object, and further configured to rotate around a first axis during the scanning; and an imaging unit including at least one camera and configured to rotate around an imaging unit axis during the scanning, wherein the optical scanning system is configured such that the imaging unit acquires a plurality of two-dimensional images of the first three-dimensional dental object corresponding to a set of predefined static relative positions between the imaging unit and the first scanning station for generating a first three-dimensional digital representation of the first three-dimensional dental object.

Abstract: An intraoral scanning system includes an intraoral scanning device to acquire light information reflected from a three-dimensional dental object during a scanning session and one or more processors operably connected to the intraoral scanning device. The processors determine surface information from the light information, and generate a three-dimensional surface model of a dental object. At least one of the one or more processors is one or more remote computers. The one or more remote computers includes a resource pool, wherein the system provides temporary access for the intraoral scanning device to one or more resources of the resource pool based on a predefined performance mode of the scanning session. Each of the at least two predefined performance modes is configured to operate the intraoral scanning device with a different number of resources from the resource pool and/or with a different type of resources from the resource pool.

Abstract: The present disclosure provides a wireless scanning device, including a scanning housing, including an image detector configured for acquiring 2D-images at a first 2D-frame-rate; and one or more processor(s) coupled to the image detector such that the 2D-images can be processed by the processor(s) to form processed data; a wireless module being coupled to the processor(s) such that the wireless module receives the processed data from the processor(s) and wirelessly transmits the processed data.

Abstract: A computer implemented method for rendering digital three-dimensional dental models of a patient includes receiving a first digital 3D dental model; receiving a second digital 3D dental model; generating a superimposed model by superimposing one of the first digital 3D dental model or the second digital 3D dental model on another of the second digital 3D dental model or the first digital 3D dental model; and arranging, in the digital 3D space, a 2D controller and the superimposed model relative to each other such that a position of the 2D controller relative to a location of the superimposed model defines a boundary that demarcates the superimposed model between a first zone configured to render only at least a part of the first digital 3D dental model from the superimposed model and a second zone configured to render only part of the second digital 3D dental model from the superimposed model.

Abstract: A 3D scanner system includes a scanning device capable of recording first and second data sets of a surface of an object when operating in a first configuration and a second configuration, respectively. A measurement unit is configured for measuring a distance from the scanning device to the surface. A control controls an operation of the scanning device based on the distance measured by the measurement unit, where the scanning device operates in the first configuration when the measured distance is within a first range of distances from the surface and the scanning device operates in the second configuration when the measured distance is within a second range of distances; and a data processor is configured to combine one or more first data sets and one or more second data sets to create a combined virtual 3D model of the object surface.

Abstract: The present disclosure relates to a 3D scanner system for scanning the oral cavity of a patient. In particular, the disclosure relates to feedback mechanisms and user interfaces of intraoral scanners. In some embodiments, the 3D scanner system comprises an intraoral scanner comprising one or more reconfigurable buttons, wherein each reconfigurable button comprises a force sensor, such as a strain gauge sensor; and wherein the intraoral scanner further comprises a display configured for displaying one or more icons, texts, or animations, associated with the reconfigurable buttons, wherein the display covers the force sensors, and wherein the scanner system further comprises one or more processors configured to generate 3D scan data of at least a part of the dental arch.

Abstract: A computer-implemented method for determining a confidence score of a digital dental workflow is disclosed. The method includes receiving scan data representative of a dental situation, wherein the scan data includes color images and near-infrared images. The method further includes determining a quality measure of the received scan data. Further, the method includes generating enhanced diagnostic images based on at least the near-infrared images of the scan data and determining a quality measure of the enhanced diagnostic images. The method further includes identifying a dental condition in the dental situation based on the enhanced diagnostic images and determining a probability value representing a likelihood that the dental condition is identified correctly. The method further includes determining the confidence score of the digital dental workflow based on the quality measure of the received scan data, the quality measure of the enhanced diagnostic images and the probability value.

Abstract: Detecting a movable object in a location includes providing a first 3D representation of at least part of a surface; providing a second 3D representation of at least part of the surface; determining for the first 3D representation a first excluded volume in space where no surface can be present; determining for the second 3D representation a second excluded volume in space where no surface can be present; if a portion of the surface in the first 3D representation is located in space in the second excluded volume, the portion of the surface in the first 3D representation is disregarded in the generation of the virtual 3D model, and/or if a portion of the surface in the second 3D representation is located in space in the first excluded volume, the portion of the surface in the second 3D representation is disregarded in the generation of the virtual 3D model.