公开(公告)号：US20220023015A1

公开(公告)日：2022-01-27

申请号：US17492453

申请日：2021-10-01

Applicant: Align Technology, Inc.

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

IPC: 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.

公开(公告)号：US20210353153A1

公开(公告)日：2021-11-18

申请号：US17390856

申请日：2021-07-30

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Pavel Agniashvili ,  Moti Ben-Dov ,  Ran Katz ,  Avi Kopelman ,  Maxim Volgin ,  Doron Malka ,  Avraham Zulti ,  Pavel Veryovkin ,  Maayan Moshe ,  Ido Tishel ,  Adi Levin ,  Shai Farkash ,  Inna Karapetyan ,  Dina Bova ,  Edi Fridman ,  Jonathan Coslovsky

IPC: A61B5/00 ,  G06T17/20

Abstract: A processing device receives a plurality of intraoral scans of a dental arch. The processing device determines, from the plurality of intraoral scans, a first set of intraoral scans that depict a restorative object and a second set of intraoral scans that fail to depict any restorative object. The processing device generates a multi-resolution three-dimensional model of the dental arch, wherein a first portion of the multi-resolution three-dimensional model is generated from the first set of intraoral scans, has a first resolution and represents the restorative object, and wherein a second portion of the multi-resolution three-dimensional model is generated from the second set of intraoral scans, has a second resolution and represents a remainder of the dental arch, wherein the first resolution is greater than the second resolution.

公开(公告)号：US20210100643A1

公开(公告)日：2021-04-08

申请号：US17124366

申请日：2020-12-16

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: A61C13/00 ,  A61C13/34 ,  G06N3/08 ,  G16H30/40

Abstract: In embodiments, a processing device generates a three-dimensional model of a dental site from scan data, the three-dimensional model comprising a representation of a tooth, wherein a portion of the three-dimensional model comprises an interfering surface that obscures a portion of the tooth. The processing device receives or generates an image of the tooth, wherein the image depicts the interfering surface. The processing device processes the image to generate a modified image, wherein the portion of the tooth that was obscured by the interfering surface in the image is shown in the modified image. The processing device updates the three-dimensional model of the dental site by replacing, using the modified image, the portion of the three-dimensional model that comprises the interfering surface that obscures the portion of the tooth, wherein the portion of the tooth that was obscured in the three-dimensional model is shown in an updated three-dimensional model.

公开(公告)号：US20210100642A1

公开(公告)日：2021-04-08

申请号：US17124363

申请日：2020-12-16

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: A61C13/00 ,  G06N3/04 ,  G06N3/08

Abstract: In embodiments, a processing device detects a margin line in a model of a preparation from one or more images. The processing device determines, for each segment of a plurality of segments of the margin line, a quality score for the segment. The processing device determines that a segment of the margin line has a quality score that is below a quality threshold, wherein the segment of the margin line was generated based on a first set of images. Responsive to determining that the segment of the margin line has the quality score that is below the quality threshold, the processing devices updates the three-dimensional model of the preparation by replacing a portion of the three-dimensional model associated with the segment of the margin line with image data from at least one of a new image or a second set of images.

公开(公告)号：US10888400B2

公开(公告)日：2021-01-12

申请号：US16814906

申请日：2020-03-10

Applicant: Align Technology, Inc.

Inventor： Gilad Elbaz ,  Erez Lampert ,  Yossef Atiya ,  Avi Kopelman ,  Ofer Saphier ,  Maayan Moshe ,  Shai Ayal ,  Michael Sabina ,  Eric Kuo ,  Assaf Weiss ,  Doron Malka ,  Eliahou Franklin Nizard ,  Ido Tishel

IPC: A61C9/00 ,  A61B1/24 ,  A61B1/06 ,  A61B1/00 ,  A61B5/107 ,  A61B5/00

Abstract: Methods and apparatuses for generating a model of a subject's teeth. Described herein are intraoral scanning methods and apparatuses for generating a three-dimensional model of a subject's intraoral region (e.g., teeth) including both surface features and internal features. These methods and apparatuses may be used for identifying and evaluating lesions, caries and cracks in the teeth. Any of these methods and apparatuses may use minimum scattering coefficients and/or segmentation to form a volumetric model of the teeth.

公开(公告)号：US20190388193A1

公开(公告)日：2019-12-26

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 ,  A61B1/24 ,  G06T7/521 ,  G06T7/80 ,  A61B1/00

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：US10390913B2

公开(公告)日：2019-08-27

申请号：US16258516

申请日：2019-01-25

Applicant: Align Technology, Inc.

Inventor： Michael Sabina ,  Avi Kopelman ,  Eric Kuo ,  Gilad Elbaz ,  Assaf Weiss ,  Doron Malka ,  Ofer Saphier ,  Eliahou Franklin Nizard ,  Ido Tishel ,  Shai Ayal ,  Maayan Moshe

IPC: G07C9/00 ,  H04W12/06 ,  H02J7/00 ,  H04W84/12 ,  A61C9/00 ,  A61B5/00 ,  A61B6/14 ,  A61C13/00 ,  A61C13/34

Abstract: Methods and apparatuses for taking, using and displaying three-dimensional (3D) volumetric models of a patient's dental arch. A 3D volumetric model may include surface (e.g., color) information as well as information on internal structure, such as near-infrared (near-IR) transparency values for internal structures including enamel and dentin.

公开(公告)号：US20170265970A1

公开(公告)日：2017-09-21

申请号：US15610515

申请日：2017-05-31

Applicant: Align Technology, Inc.

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

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

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

Abstract: A computing device comprises a processor that uses a field curvature model that is calibrated to a confocal imaging apparatus. The processor receives intensity measurements generated by pixels of a detector of the confocal imaging apparatus. The processor determines, for each pixel, a focusing setting of the confocal imaging apparatus that provides a maximum measured intensity. The processor determines, for each pixel, a depth of a point of a 3D object associated with the pixel that corresponds to the determined focusing setting. The processor adjusts the depth of at least one point of the 3D object based on applying the determined focusing setting for the pixel associated with the at least one point to the field curvature model to compensate for a non-flat focal surface of the confocal imaging apparatus. The processor determines a shape of the 3D object based at least in part on the adjusted depth.