Patents Assigned to 3Shape A/S
  • METHOD AND SYSTEM FOR SCANNING MULTIPLE DENTAL OBJECTS
    Publication number: 20230190424
    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.
    Type: Application
    Filed: December 16, 2022
    Publication date: June 22, 2023
    Applicant: 3SHAPE A/S
    Inventors: Morten Bo BONDING, Sergey MESCHERINOV
  • A METHOD OF DENOISING DENTAL IMAGES THROUGH DOMAIN ADAPTATION
    Publication number: 20230196515
    Abstract: Disclosed is a computer-implemented method of denoising dental images, comprising: obtaining a training set of images of a first type, comprising noisy images and true images, where the noisy image is the true image with generated noise; training at least one neural network on the training set; and denoising a dental image of the second type through the trained neural network.
    Type: Application
    Filed: May 12, 2021
    Publication date: June 22, 2023
    Applicant: 3Shape A/S
    Inventors: Thorbjørn Lauring KOCH, Jacob FRØSIG, Thomas Sangild SØRENSEN
  • VOLUME RENDERING USING SURFACE GUIDED CROPPING
    Publication number: 20230186548
    Abstract: Disclosed is surface guided cropping in volume rendering of 3D volumetric data from intervening anatomical structures in the patient's body. A digital 3D representation expressing the topography of a first anatomical structure is used to define a clipping surface or a bounding volume which then is used in the volume rendering to exclude data from an intervening structure when generating a 2D projection of the first anatomical structure.
    Type: Application
    Filed: February 9, 2023
    Publication date: June 15, 2023
    Applicant: 3SHAPE A/S
    Inventors: Anders KJÆR-NIELSEN, Adam Carsten STOOT
  • Intraoral scanning apparatus
    Patent number: 11671582
    Abstract: A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: June 6, 2023
    Assignee: 3SHAPE A/S
    Inventors: Rune Fisker, Henrik Öjelund, Rasmus Kjaer, Mike Van Der Poel, Arish A. Qazi, Karl-Josef Hollenbeck
  • Dental preparation guide
    Patent number: 11653998
    Abstract: A method for validating a preparation of at least one tooth in a prepared set of teeth for determining whether the prepared tooth is capable of accepting a dental restoration includes obtaining a virtual dental preparation guide configured for validating the preparation of the at least one tooth; obtaining a digital 3D representation of the prepared set of teeth; visualizing the virtual dental preparation guide together with the digital 3D representation of the prepared set of teeth; and validating from the visualization of the virtual dental preparation guide together with the digital 3D representation of the prepared set of teeth whether the prepared at least one tooth is shaped such that it can accept the dental restoration.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: May 23, 2023
    Assignee: 3SHAPE A/S
    Inventors: Rune Fisker, Nikolaj Deichmann
  • 3D scanner using a structured beam of probe light
    Patent number: 11650045
    Abstract: Disclosed is a 3D scanner for recording the 3D topography of an object, the 3D scanner including: a projector unit configured for projecting a structured beam of probe light onto the object; an imaging unit arranged to acquire 2D images of the object when the object is illuminated by the structured probe light beam; and an actuator unit arranged to control the position of the structured probe light beam at the object by rotating a movable portion of the projector unit around a pivoting axis, the actuator unit including a rotation motor including or arranged to drive a wheel, where the surface of the wheel operatively coupled to the movable portion of the projector unit has a radial distance from the axis of the rotation motor which changes with the rotation.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 16, 2023
    Assignee: 3SHAPE A/S
    Inventors: Rasmus Kjaer, Thomas Allin Højgaard, Herman Scherling
  • 3D intraoral scanner measuring fluorescence
    Patent number: 11647909
    Abstract: A 3D scanner system for detecting and/or visualizing cariogenic regions in teeth based on fluorescence emitted from said teeth, the 3D scanner system including data processing means configured for mapping a representation of fluorescence emitted from the teeth onto the corresponding portion of a digital 3D representation of the teeth to provide a combined digital 3D representation.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 16, 2023
    Assignee: 3SHAPE A/S
    Inventors: Mike Van Der Poel, Karl-Josef Hollenbeck
  • STORAGE, RENDERING, AND DISPLAY OF INFORMATION OF MESHES THROUGH TESSELLATION WITH SERIALIZED VALUES
    Publication number: 20230138291
    Abstract: Disclosed is a method of storing information in a mesh, including tessellating a plurality of input patches of the mesh, serializing vertices of the tessellated input patches, calculating a value for each vertex, serializing the values according to the serialization of the vertices; and storing the serialized values.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 4, 2023
    Applicant: 3SHAPE A/S
    Inventors: Marek Krzysztof MISZTAL, Henrik ÖJELUND, Zenjie LI
  • Dynamic virtual articulator for simulating occlusion of teeth
    Patent number: 11633265
    Abstract: Disclosed is a computer-implemented method of using a dynamic virtual articulator for simulating occlusion of teeth, when performing computer-aided designing of one or more dental restorations for a patient, where the method includes the steps of: providing the virtual articulator including a virtual three-dimensional model of the upper jaw and a virtual three-dimensional model of the lower jaw resembling the upper jaw and lower jaw, respectively, of the patient's mouth; providing movement of the virtual upper jaw and the virtual lower jaw relative to each other for simulating dynamic occlusion, whereby collisions between teeth in the virtual upper and virtual lower jaw occur; wherein the method further includes: providing that the teeth in the virtual upper jaw and virtual lower jaw are blocked from penetrating each other's virtual surfaces in the collisions.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 25, 2023
    Assignee: 3SHAPE A/S
    Inventors: Rune Fisker, Christophe Vasiljev Barthe, Kasper Kabell Kristensen, Tommy Sanddal Poulsen
  • Volume rendering using surface guided cropping
    Patent number: 11631211
    Abstract: Disclosed is surface guided cropping in volume rendering of 3D volumetric data from intervening anatomical structures in the patient's body. A digital 3D representation expressing the topography of a first anatomical structure is used to define a clipping surface or a bounding volume which then is used in the volume rendering to exclude data from an intervening structure when generating a 2D projection of the first anatomical structure.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: April 18, 2023
    Assignee: 3SHAPE A/S
    Inventors: Anders Kjær-Nielsen, Adam Carsten Stoot
  • Dual-resolution 3D scanner and method of using
    Patent number: 11629955
    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.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: April 18, 2023
    Assignee: 3SHAPE A/S
    Inventors: Nikolaj Deichmann, Mike Van Der Poel, Karl-Josef Hollenbeck, Rune Fisker
  • Intraoral scanning apparatus
    Patent number: 11622102
    Abstract: A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: April 4, 2023
    Assignee: 3SHAPE A/S
    Inventors: Rune Fisker, Henrik Öjelund, Rasmus Kjaer, Mike Van Der Poel, Arish A. Qazi, Karl-Josef Hollenbeck
  • Deriving tooth condition information for populating digital dental charts
    Patent number: 11612324
    Abstract: Disclosed are methods and digital tools for deriving tooth condition information for a patient's teeth, for populating a digital dental chart with derived tooth condition information, and for generating an electronic data record containing such information.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: March 28, 2023
    Assignee: 3SHAPE A/S
    Inventors: Mike Van Der Poel, Rune Fisker, Karl-Josef Hollenbeck
  • SCANNING SYSTEM AND CALIBRATION THEREOF
    Publication number: 20230083150
    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.
    Type: Application
    Filed: April 7, 2021
    Publication date: March 16, 2023
    Applicant: 3SHAPE A/S
    Inventors: Anders GAARDE, Johan Teichert BONDORF
  • Volume rendering using surface guided cropping
    Patent number: 11600037
    Abstract: Disclosed is surface guided cropping in volume rendering of 3D volumetric data from intervening anatomical structures in the patient's body. A digital 3D representation expressing the topography of a first anatomical structure is used to define a clipping surface or a bounding volume which then is used in the volume rendering to exclude data from an intervening structure when generating a 2D projection of the first anatomical structure.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: March 7, 2023
    Assignee: 3SHAPE A/S
    Inventors: Anders Kjær-Nielsen, Adam Carsten Stoot
  • Detecting tooth shade
    Patent number: 11589965
    Abstract: Disclosed in a method, a user interface and a system for use in determining shade of a patient's tooth, wherein a digital 3D representation including shape data and texture data for the tooth is obtained. A tooth shade value for at least one point on the tooth is determined based on the texture data of the corresponding point of the digital 3D representation and on known texture values of one or more reference tooth shade values.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: February 28, 2023
    Assignee: 3SHAPE A/S
    Inventors: Bo Esbech, Rune Fisker, Lars Henriksen, Tais Clausen
  • INTRAORAL SCANNING APPARATUS
    Publication number: 20230058298
    Abstract: A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
    Type: Application
    Filed: August 22, 2022
    Publication date: February 23, 2023
    Applicant: 3SHAPE A/S
    Inventors: Rune FISKER, Henrik ÖJELUND, Rasmus KJAER, Mike VAN DER POEL, Arish A. QAZI, Karl-Josef HOLLENBECK
  • SYSTEM AND METHOD FOR FABRICATING A DENTAL TRAY
    Publication number: 20230049287
    Abstract: According to an embodiment, a method for generating a digital data set for fabricating a physical dental bleaching tray useable to deliver an bleaching agent is disclosed. The method includes obtaining a three-dimensional digital representation of a patient’s dentition including teeth and gingiva; segmenting two or more teeth into individual tooth; identifying a facial surface of at least one of the segmented tooth; defining a facial surface portion including a surface area that is at least partly bound by a virtual boundary that is non- interfacing with the gingiva; generating a modified three-dimensional digital representation using the defined facial surface portion; and generating, based on the modified three-dimensional digital representation, the digital data set configured to be used in fabricating the physical dental bleaching tray.
    Type: Application
    Filed: January 22, 2021
    Publication date: February 16, 2023
    Applicant: 3SHAPE A/S
    Inventor: Rune FISKER
  • Drill guide assembly
    Patent number: 11553985
    Abstract: A drill guide assembly used to guide a drill into the jawbone of a patient during dental surgery includes at least one through going guide bore for guiding the drill, at least one attachment for securing a part of the drill guide assembly to the jaw of the patient during surgery, wherein the drill guide assembly includes a first part including the at least one first through going guide bore, the at least one first attachment and at least a first reference area for referring the first part to a first anatomical feature of the patient, a second part including a second reference area for referring the second part to a second anatomical feature of the patient, and a guiding structure for guiding the first part and the second into a desired configuration.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: January 17, 2023
    Assignee: 3SHAPE A/S
    Inventors: Rune Fisker, Birk Ploennigs, Thomas Hedegaard
  • METHOD FOR GENERATING EDGE CURVE FOR DENTAL DEVICES
    Publication number: 20230005196
    Abstract: According to an embodiment, a computer-implemented method for generating an edge curve to facilitate manufacture of at least a portion of a dental device is disclosed. The method includes identifying at least one tooth reference point for each of at least two teeth on a dental model; identifying at least one offset point corresponding to each of the at least one tooth reference points such that the at least one offset point is on a gingival surface of the dental model and located outside an interproximal area; and generating the edge curve by connecting the offset points such that the edge curve is outside the interproximal area and on the gingival surface.
    Type: Application
    Filed: December 4, 2020
    Publication date: January 5, 2023
    Applicant: 3SHAPE A/S
    Inventors: Marat KHAITOV, Karl-Josef HOLLENBECK