3SHAPE A/S

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.