公开(公告)号：US12076200B2

公开(公告)日：2024-09-03

申请号：US17095659

申请日：2020-11-11

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Avi Kopelman

IPC: A61C13/00 ,  G06T7/50 ,  G06T7/55 ,  G06T19/20

CPC classification number: A61C13/0004 ,  G06T7/50 ,  G06T7/55 ,  G06T19/20 ,  G06T2219/028 ,  G06T2219/2004 ,  G06T2219/2008

Abstract: A method of generating a virtual 3D model of a dental arch is provided. The method includes receiving intraoral scans of a dental arch, determining a first depth of a first intraoral 3D surface in a first intraoral scan, and determining a second depth of a second intraoral 3D surface in the first intraoral scan, and wherein there is a fixed distance between the first intraoral 3D surface and the second intraoral 3D surface in the first intraoral scan. The method further includes stitching together the intraoral scans and generating a virtual 3D model of the dental arch from the intraoral scans, wherein the fixed distance between the first intraoral 3D surface and the second intraoral 3D surface is included in the virtual 3D model.

公开(公告)号：US11995839B2

公开(公告)日：2024-05-28

申请号：US17011930

申请日：2020-09-03

Applicant: Align Technology, Inc.

Inventor： Assaf Weiss ,  Maxim Volgin ,  Pavel Agniashvili ,  Chad Clayton Brown ,  Alexander Raskhodchikov ,  Avi Kopelman ,  Michael Sabina ,  Moti Ben-Dov ,  Shai Farkash ,  Igor Makiewsky ,  Maayan Moshe ,  Ofer Saphier

IPC: G06T7/12 ,  A61C13/00 ,  A61C13/34 ,  G06N3/047 ,  G06N3/08 ,  G06T7/00 ,  G16H30/40

CPC classification number: G06T7/12 ,  A61C13/0004 ,  A61C13/0019 ,  A61C13/34 ,  G06N3/047 ,  G06N3/08 ,  G06T7/0012 ,  G16H30/40 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30036

Abstract: Methods and systems are described that mark and/or correct margin lines and/or other features of dental sites. In one example a three-dimensional model of a dental site is generated from intraoral scan data of the dental site, the three-dimensional model comprising a representation of a preparation tooth. An image of the preparation tooth is received or generated. Data from the image is processed using a trained machine learning model that has been trained to identify margin lines of preparation teeth, wherein the trained machine learning model outputs a probability map comprising, for each pixel in the image, a probability that the pixel depicts a margin line. The three-dimensional model of the dental site is then updated by marking the margin line on the representation of the preparation tooth based on the probability map.

公开(公告)号：US11950981B2

公开(公告)日：2024-04-09

申请号：US18136831

申请日：2023-04-19

Applicant: Align Technology, Inc.

Inventor： Tal Verker ,  Adi Levin ,  Ofer Saphier ,  Maayan Moshe

IPC: G01B11/24 ,  A61C9/00 ,  G02B21/00 ,  G02B23/24 ,  G02B23/26 ,  G02B27/00

CPC classification number: A61C9/0066 ,  G01B11/24 ,  G02B21/006 ,  G02B23/2446 ,  G02B23/2461 ,  G02B23/26 ,  G02B27/0025

Abstract: Calibrating an intraoral scanner includes obtaining reference data of a reference three-dimensional (3D) representation of a calibration object and obtaining, based on the intraoral scanner being used by a user to scan the 3D calibration object, and from one or more device to real-world coordinate transformations of two-dimensional (2D) images of the 3D calibration object, measurement data. Calibrating the intraoral scanner further includes aligning the measurement data to the reference data to obtain alignment data and updating, based on the alignment data, said one or more transformations.

公开(公告)号：US20240056561A1

公开(公告)日：2024-02-15

申请号：US18243032

申请日：2023-09-06

Applicant: Align Technology, Inc.

Inventor： Gilad Furst ,  Tal Verker ,  Ofer Saphier

IPC: H04N13/257 ,  G02B27/10 ,  G02B23/24 ,  A61B1/06 ,  A61B1/24 ,  A61B1/00 ,  A61B5/00 ,  A61C9/00 ,  A61B1/247 ,  A61B1/07 ,  G01J3/46 ,  A61B1/04 ,  H04N23/55 ,  H04N23/56 ,  H04N23/74

CPC classification number: H04N13/257 ,  G02B27/1013 ,  G02B23/2446 ,  A61B1/0669 ,  A61B1/24 ,  A61B1/063 ,  A61B1/00006 ,  A61B5/0088 ,  A61C9/006 ,  A61B1/0638 ,  A61B1/247 ,  A61B5/0073 ,  A61B1/00096 ,  A61B1/07 ,  A61B1/00172 ,  G01J3/46 ,  A61B1/043 ,  H04N23/55 ,  H04N23/56 ,  H04N23/74 ,  A61B5/0071 ,  H04N2013/0081

Abstract: A system includes an intraoral scanner and a computing device operatively connected to the intraoral scanner. The intraoral scanner generates three-dimensional scan data of a tooth and further generates color data of the tooth under multi-chromatic light. The computing device receives the three-dimensional scan data and the color data of the tooth during a first mode of operation. The computing device invokes a second mode of operation, and presents, in a graphical user interface (GUI), an image of the tooth. The computing device further presents, in the GUI, data indicating a plurality of color zones of the tooth and further indicating, for at least one color zone of the plurality of color zones, that insufficient color data has been received, wherein each color zone indicates a separate region of the tooth that is expected to have approximately uniform color.

公开(公告)号：US20230414331A1

公开(公告)日：2023-12-28

申请号：US18331873

申请日：2023-06-08

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier

IPC: A61C9/00 ,  A61C13/00 ,  G06T17/00

CPC classification number: A61C9/0053 ,  A61C13/0004 ,  G06T17/00 ,  G06T2207/30036

Abstract: Methods and systems for intraoral scanning and generation of 3D surfaces based on intraoral scans are described. In one example a system includes an intraoral scanner and a computing device operatively coupled to the intraoral scanner. The computing device receives an indication that a tool that provides supplemental surface data will be used during intraoral scanning. The computing device implements a supplemental surface data scanning mode in which a three-dimensional (3D) surface of a dental site that is generated from intraoral scan data is supplemented with additional surface data determined based at least in part on properties of the tool, wherein the additional surface data is for a first portion of the 3D surface that is hidden from direct viewing by the intraoral scanner during intraoral scanning.

公开(公告)号：US11792384B2

公开(公告)日：2023-10-17

申请号：US16890972

申请日：2020-06-02

Applicant: Align Technology, Inc.

Inventor： Gilad Furst ,  Tal Verker ,  Ofer Saphier

IPC: H04N13/257 ,  G02B27/10 ,  G02B23/24 ,  A61B1/06 ,  A61B1/24 ,  A61B1/00 ,  A61B5/00 ,  A61C9/00 ,  A61B1/247 ,  A61B1/07 ,  G01J3/46 ,  A61B1/04 ,  H04N23/55 ,  H04N23/56 ,  H04N23/74 ,  H04N13/00 ,  A61C1/08 ,  H04N23/10 ,  H04N23/50

CPC classification number: H04N13/257 ,  A61B1/00006 ,  A61B1/00096 ,  A61B1/00172 ,  A61B1/043 ,  A61B1/063 ,  A61B1/0638 ,  A61B1/0669 ,  A61B1/07 ,  A61B1/24 ,  A61B1/247 ,  A61B5/0073 ,  A61B5/0088 ,  A61C9/006 ,  G01J3/46 ,  G02B23/2446 ,  G02B27/1013 ,  H04N23/55 ,  H04N23/56 ,  H04N23/74 ,  A61B5/0071 ,  A61C1/088 ,  H04N23/10 ,  H04N23/555 ,  H04N2013/0077 ,  H04N2013/0081

Abstract: A method includes receiving scan data of a tooth during a first mode of operation, the scan data of the tooth having been generated by an intraoral scanner. The method includes invoking a second mode of operation and presenting, in a GUI, an image of the tooth. The method includes presenting, in the GUI, indications of a plurality of color zones of the tooth, the indications comprising, for at least one color zone of the plurality of color zones, an indication that insufficient color information has been received, wherein each color zone represents a separate region of the tooth for which an approximately uniform color is to be used. The method includes categorizing, for one or more color zones of the plurality of color zones for which sufficient color information has been received, each of the one or more color zones according to a color pallet used for dental prosthetics.

公开(公告)号：US11651494B2

公开(公告)日：2023-05-16

申请号：US17013513

申请日：2020-09-04

Applicant: Align Technology, Inc.

Inventor： Chad C. Brown ,  Yun Gao ,  Pavel Agniashvili ,  Avraham Zulti ,  Jonathan Coslovsky ,  Christopher E. Cramer ,  Roman Gudchenko ,  Ofer Saphier ,  Adi Levin ,  Maayan Moshe ,  Doron Malka

IPC: G06T7/11 ,  G06T7/00 ,  G06N3/04 ,  G16H30/20 ,  G06N20/00 ,  G06T17/20 ,  G06T19/20

CPC classification number: G06T7/11 ,  G06N3/0454 ,  G06N20/00 ,  G06T7/0012 ,  G06T17/205 ,  G06T19/20 ,  G16H30/20 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30036 ,  G06T2210/41 ,  G06T2219/2012

Abstract: Methods and apparatuses (including systems and devices), including computer-implemented methods for segmenting, correcting and/or modifying a three-dimensional (3D) model of a subject's oral cavity to determine individual components such as teeth, gingiva, tongue, palate, etc., that may be selective and/or collectively digitally manipulated. In some implementations, artificial intelligence uses libraries of labeled 2D images and 3D dental models to learn how to segment a 3D dental model of a subject's oral cavity using 2D images, height map and/or other data and projection values that relate the 2D images to the 3D model. As noted herein, the dental classes can include a variety of intra-oral and extra-oral objects and can be represented as binary values, discrete values, a continuum of height map data, etc. In some implementations, several dental classes are predicted concurrently.

公开(公告)号：US11534273B2

公开(公告)日：2022-12-27

申请号：US16446181

申请日：2019-06-19

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Yossef Atiya ,  Arkady Rudnitsky ,  Nir Makmel ,  Sergei Ozerov ,  Tal Verker ,  Tal Levy

IPC: A61C9/00 ,  G06T7/80 ,  G02B27/42 ,  G06T17/00 ,  H04N9/31 ,  G06T7/521 ,  A61B1/00 ,  A61B1/24

Abstract: An apparatus for intraoral scanning includes an elongate handheld wand that has a probe. One or more light projectors and two or more cameras are disposed within the probe. The light projectors each has a pattern generating optical element, which may use diffraction or refraction to form a light pattern. Each camera may be configured to focus between 1 mm and 30 mm from a lens that is farthest from the camera sensor. Other applications are also described.

公开(公告)号：US20220346629A1

公开(公告)日：2022-11-03

申请号：US17864320

申请日：2022-07-13

Applicant: Align Technology, Inc.

Inventor： Sergei Ozerov ,  Ofer Saphier ,  Avi Kopelman ,  Adi Levin ,  Pavel Razumovskiy ,  Michael Sabina ,  Mikhail Dyachenko ,  Rene M. Sterental ,  Partha Dey ,  Roman A. Roschin ,  Anton Gavrilov ,  Leonid Vyacheslavovich Grechishnikov

IPC: A61B1/00 ,  A61B1/04 ,  A61B1/24 ,  A61B6/14 ,  A61B6/00 ,  A61B5/00 ,  A61B5/11 ,  G16H30/40 ,  A61C7/00 ,  G16H50/50

Abstract: A processing device may execute instructions from a computer readable medium to perform operations comprising: making a comparison between first image data of at least a portion of a dental arch and second image data of at least the portion of the dental arch; determining a plurality of differences between a first representation of at least the portion of the dental arch in the first image data and a second representation of at least the portion of the dental arch in the second image data; determining that a first difference of the plurality of differences is attributable to tooth movement; determining that a second difference of the plurality of differences is attributable to tooth wear to one or more teeth on at least a portion of the dental arch; and generating a third representation of at least the portion of the dental arch that is a modified version of the second representation, wherein a visual indication of the tooth wear is provided in the third representation.

公开(公告)号：US11439483B2

公开(公告)日：2022-09-13

申请号：US17492453

申请日：2021-10-01

Applicant: Align Technology, Inc.

Inventor： Tal Verker ,  Adi Levin ,  Ofer Saphier ,  Maayan Moshe

IPC: G01J4/00 ,  A61C9/00 ,  G01B11/24 ,  G02B23/24 ,  G02B21/00 ,  G02B27/00 ,  G02B23/26

Abstract: A system comprises alight source to provide light, an optical system comprises focusing optics to focus the light onto a focal surface, a detector to measure returning light that is reflected off of a three dimensional object, a translation mechanism to displace the focal surface along an imaging axis defined by the optical path, and one or more processor. The one or more processor is to generate measurement data comprising coordinates of a plurality of surface points of the three dimensional object based on the measured returning light; adjust the coordinates of the subset of the plurality of surface points along up to three axes to correct the measurement data so as to remove inaccuracies caused by changes in magnification at the focal surface; and generate a three dimensional model of the three dimensional object using corrected measurement data.