Abstract: A handheld intraoral scanner system includes a handheld intraoral scanner and a detachable sleeve configured to be detachably attached to a scan tip of the scanner. The sleeve includes a cover part and a window part, which includes a tapered portion. The window part may be injection molded. The sleeve may be formed by two-component injection molding the cover part and the window part. The window part includes an optical area having a lower birefringence than a relief area located at the tapered portion and including an injection site at which a first molten polymer material was injected into a first form, forming the window part. A method of injection molding a window part for a detachable sleeve that includes a cover part and that is configured to be detachably attached to a handheld intraoral scanner. The method may include two-component injection molding the cover part and the window part.

Abstract: A computer-implemented method for detecting tooth wear on a virtual 3D model of a dental situation includes receiving, by a processor, the virtual 3D model of the dental situation, obtaining a segmented 3D model by segmenting the virtual 3D model into a plurality of individual teeth and gingiva, wherein the segmented 3D model comprises a tooth, encoding the tooth from the segmented 3D model into a latent space of a trained neural network to obtain an encoded tooth representation, wherein the latent space of the trained neural network is continuous and includes a plurality of clusters of encoded reference teeth representations, wherein each cluster from the plurality of clusters of encoded reference teeth representations is representative of a tooth wear type.

Abstract: A method for manufacturing a dental component in a dental clinic or laboratory, the method including setting up one or more manufacturing machines for usage by a clinical computer over a computer network; designing, in a design software application on the clinical computer, the dental component to be manufactured; receiving, on the clinical computer, a status message from the one or more manufacturing machines indicating a status of the manufacturing machine(s); responsive to the status message(s), selecting a manufacturing machine for manufacturing the dental component; and sending the designed dental component from the clinical computer to the selected manufacturing machine over the computer network.

Abstract: An intraoral scanning system including a handheld intraoral scanning device and one or more client devices is provided. The handheld intraoral scanning device captures a plurality of two-dimensional scan images during a scanning session of a dental arch. The handheld intraoral scanning device provides three-dimensional surface information based on the plurality of 2D scan images. The handheld intraoral scanning device establishes a connection to one or more wireless full-duplex communication channels. The one or more client devices establishes a connection to one of the one or more wireless full-duplex communication channels by forwarding an identification number to the handheld intraoral scanning device. The one or more client devices receives the 3D surface information and render the 3D surface information into an interactive 3D graphical representation.

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 includes obtaining first data representing a surface of a dental object and second data representing an internal volume of the object, wherein the first data is 3D surface data; obtaining first and second augmentation data indicating an estimated presence of first and second sets of dental conditions, respectively; obtaining a user input indicative of a desired inspection site of the object; determining a part of the first and second data corresponding to the desired inspection site; and rendering, in a GUI, first and second views including the part of the first and second data corresponding to the desired inspection site and rendering with a visual indication of at least a part of the first and second augmentation data corresponding to the desired inspection site, respectively.

Abstract: An intraoral scanning system includes a handheld intraoral scanning device that includes an image sensor unit configured to capture visible light information and internal light information from at least the dental arch caused by the emitted light at the different wavelengths. The system includes one or more processors operably connected to the image sensor unit, the one or more processors is configured to receive the visible light information and the internal light information, determine, in real time, surface information from the visible light information for generating or updating a three-dimensional (3D) model of the dental arch using the surface information, determine internal structure information of the dental arch from the internal light information, and determine composed scan information including a composition of the internal structure information and the visible light information.

Abstract: The present disclosure relates to a dental scanning system for generating a digital three-dimensional representation of a dental object, the system comprising an intraoral scanning device comprising one or more projector units configured to project a pattern on a surface of the dental object; and two or more cameras configured to acquire one or more sets of images; wherein the scanning system further comprises one or more processors configured to determine one or more image features within each set of images; solve a correspondence problem within each set of images such that points in 3D space are determined based on the image features, wherein said points form a solution to the correspondence problem, wherein the correspondence problem is solved for groups of pattern features; and generate a digital three-dimensional representation of the dental object, wherein the solution to the correspondence problem is used to generate the three-dimensional representation.

Abstract: Disclosed is a non-calibrated scanning system to be modified to a calibrated scanning system based on generating a three-dimensional representation of a three-dimensional calibration-object.

Abstract: The present disclosure relates to an intraoral scanning device comprising: 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 of aligning digital three-dimensional (3D) representations of an upper and lower jaw includes the steps of: generating a first digital 3D representation of the upper jaw and a second digital 3D representation of the 5 lower jaw; inputting the first and second digital 3D representations to a first neural network configured to output a transformation for each 3D representation; applying the transformation to each of the first and second 3D representations, whereby transformed 3D representations are generated; inputting the transformed 3D representations to a second neural network configured to align the transformed 3D representations; and fine tuning the 10 alignment such that the first and second 3D representations of the jaws are arranged in occlusion.

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.

Abstract: A method includes obtaining scan data of a dental object at a local device, wherein the scan data includes primary scan data, wherein the scan data includes secondary scan data indicative of characteristics other than the 3D geometry of the dental object. The method includes establishing a connection between the local device and a remote computing device. The method includes obtaining a performance indicator by detecting a performance of the connection. The method includes, if the performance indicator exceeds a primary performance threshold, entering a full connection mode. The method includes, if the performance indicator is less than the primary performance threshold entering a partial connection mode.

Abstract: A computer-implemented method is configured for applying artificial interproximal tooth data to a plurality of dental objects being scanned by an intraoral scanner. The method includes receiving intraoral scan data of a plurality of dental objects produced by the scanner; determining a 3D model of the objects based on the scan data, wherein the 3D model includes a plurality of teeth vertices; segmenting, based on a tooth segmentation algorithm, the vertices into a first and second tooth, wherein an interproximal surface of the first and second tooth does not include any of the vertices; fitting, based on a real-tooth fitting algorithm, a first and a second tooth model to the first and the second tooth, respectively, wherein the models include a plurality of reference vertices; generating artificial interproximal vertices by determining which of the reference vertices overlaps the interproximal surfaces; and applying the artificial interproximal vertices to the interproximal surface.

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.