公开(公告)号：US11122180B2

公开(公告)日：2021-09-14

申请号：US14268201

申请日：2014-05-02

Applicant: DENTSPLY SIRONA Inc.

Inventor： Joachim Pfeiffer ,  Jian Lu ,  Alexei Harvard ,  Bjoern Voss ,  Frank Thiel

IPC: H04N1/00 ,  H04N1/46 ,  H04N1/195 ,  A61C9/00 ,  G01B11/25 ,  H04N13/254 ,  H04N13/207

Abstract: A method of performing a three-dimensional (3D) scan of an object includes applying an optical contrast powder to the object and illuminating the object with light. First and second two-dimensional (2D) color image data corresponding to the object is generated. First and second 2D monochrome image data corresponding to the object is generated using the first and second 2D color image data. 3D data corresponding to the object is generated using the first and second monochrome 2D image data. Color 3D image data corresponding to the object is generated by adding color information to the 3D data. The color 3D image data is displayed.

公开(公告)号：US11129522B2

公开(公告)日：2021-09-28

申请号：US16508871

申请日：2019-07-11

Applicant: DENTSPLY SIRONA Inc.

Inventor： Anders Adamson ,  Frank Thiel ,  Ulf Willers

IPC: A61B1/24 ,  A61B5/00 ,  A61C9/00 ,  G01B11/24 ,  G01B9/02 ,  G01B11/02

Abstract: The invention relates to a measurement system for optically measuring an object, comprising a dental camera and an optical attachment. In this case the optical attachment comprises at least one lens, which is shaped and arranged in such a way that the optical attachment has a negative focal length so that a measurement field or a measurement volume of the dental camera is enlarged by the optical attachment.

公开(公告)号：US10254111B2

公开(公告)日：2019-04-09

申请号：US15575834

申请日：2016-05-23

Applicant: DENTSPLY SIRONA inc.

Inventor： Frank Thiel ,  Gerrit Kocherscheidt

IPC: G01B11/25 ,  A61B1/24 ,  A61B1/00 ,  A61B1/06

Abstract: The invention relates to a device for optical 3D measurement of an object using an optical depth-scanning measurement method, comprising at least two light sources, at least two optical means for producing textured patterns and at least one recording means. A first pattern is produced with the aid of a first optical means and projected onto the object to be recorded as a first projection beam. A second pattern is produced with the aid of a second optical means and projected onto the object to be recorded as a second projection beam. The imaging optics is controlled and adjusted in such a way that a sharp focal plane is incrementally varied along an optical axis of the device.

公开(公告)号：US11830186B2

公开(公告)日：2023-11-28

申请号：US17251364

申请日：2019-06-17

Applicant: SIRONA DENTAL SYSTEMS GMBH ,  DENTSPLY SIRONA INC.

Inventor： Sascha Schneider ,  Frank Thiel ,  Axel Schwotzer

IPC: G06T7/00 ,  A61B5/00 ,  A61C9/00 ,  G06T15/04 ,  G06T15/08

CPC classification number: G06T7/0012 ,  A61B5/0088 ,  A61C9/0053 ,  G06T15/04 ,  G06T15/08 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/30036

Abstract: A method for designing a drilling template, wherein a dental situation is measured by means of a 3D surface measuring device and a 3D surface model of the dental situation is produced and/or measured by means of an X-ray device or an MRI device, wherein the dental situation is measured and a volume model of the dental situation is produced, the method comprising the steps of: applying an artificial neural network for machine learning (convolutional neural network; CNN) to the 3D surface model of the dental situation and/or the volume model of the dental situation and/or to an initial 3D model of the drilling template; and automatically producing a ready made 3D model of the drilling template.

公开(公告)号：US10531072B2

公开(公告)日：2020-01-07

申请号：US14440478

申请日：2013-11-04

Applicant: DENTSPLY SIRONA, Inc.

Inventor： Bjorn Popilka ,  Frank Thiel ,  Frank Forster

IPC: H04N13/246 ,  A61B5/107 ,  G01B11/25 ,  G01B21/04 ,  A61B5/00 ,  G06T7/80 ,  G06T7/521 ,  H04N17/00 ,  A61C9/00

Abstract: The invention relates to a method and a calibration device for calibrating a dental camera (1), which is based on a fringe projection method for optically measuring a dental object (10) in three dimensions, comprising a projection grid (2) for generating a projection pattern (3) that consists of a plurality of fringes (5), and an optical system (4) that projects the generated projection pattern (3) onto the object (10) to be measured. In a first step, a reference surface (74) with known dimensions is measured by the dental camera (1) using the fringe projection method. Actual coordinates (33, 36) of a plurality of measurement points (11) are determined on the reference surface (74), and the determined actual coordinates (33, 36) are compared to target coordinates (34) of the measurement points (11) on the reference surface (74). In the following method step, proceeding from the deviations (35, 37) between the actual coordinates (33, 36) and the target coordinates (34), a plurality of compensation values (40, 50, 51, 52, 53) are calculated for the individual fringes (5) of the projection pattern (3).

公开(公告)号：US11903780B2

公开(公告)日：2024-02-20

申请号：US17251345

申请日：2019-06-17

Applicant: DENTSPLY SIRONA INC.

Inventor： Sascha Schneider ,  Frank Thiel

IPC: A61C13/00 ,  G06T7/00 ,  A61C9/00 ,  A61C19/10 ,  G06T17/00

CPC classification number: A61C13/0004 ,  A61C9/0053 ,  A61C19/10 ,  G06T7/0012 ,  G06T17/00 ,  G06T2207/20084 ,  G06T2207/30036

Abstract: A method for designing a dental component, specifically a restoration, a bite guard or an impression tray, comprising the steps of: measuring a dental situation; generating a 3D model of the dental situation; applying an artificial neural network for machine learning (convolutional neural network; CNN) to the 3D model of the dental situation and/or an initial 3D model of the dental component, and automatically generating a fully designed 3D model of the dental component, specifically the restoration, the bite guard or the impression tray.

公开(公告)号：US11129697B2

公开(公告)日：2021-09-28

申请号：US16317667

申请日：2017-07-21

Applicant: DENTSPLY SIRONA inc.

Inventor： Joachim Pfeiffer ,  Frank Thiel

IPC: A61C9/00 ,  A61C19/04 ,  A61C8/00

Abstract: The invention relates to a measuring system for measuring an implant-implant situation for planning an implant-supported tooth replacement part supported on at least two implants, comprising a scanning template and the at least two set implants. The scanning template has cut-outs for the individual implants, wherein first markings are arranged on surface regions around the cut-outs.

公开(公告)号：US10057560B2

公开(公告)日：2018-08-21

申请号：US14614673

申请日：2015-02-05

Applicant: DENTSPLY SIRONA Inc.

Inventor： Frank Thiel ,  Joachim Pfeiffer

IPC: H04N13/02 ,  H04N13/00 ,  A61C19/04 ,  A61C9/00 ,  A61B5/00 ,  G01B11/25 ,  G06T7/55

CPC classification number: H04N13/261 ,  A61B5/0064 ,  A61B5/0073 ,  A61B5/4547 ,  A61B2576/00 ,  A61C9/0053 ,  A61C9/006 ,  A61C19/04 ,  G01B11/2518 ,  G01B2210/52 ,  G06T7/55 ,  G06T2207/30036 ,  H04N13/189 ,  H04N13/296

Abstract: The method for optical three-dimensional surveying using an intraoral camera (2), wherein the intraoral camera (2) provides that a 3D image is created from at least one of the 2D recorded images or from at least one of the sequences, and wherein a plurality of all the 2D recorded images and/or sequences created in a first operating mode (M1) are used to create at least one overall 3D image. In addition, the method provides that a selection is made between the first operating mode (M1) and a second operating mode (M2), wherein a plurality of all 2D recorded images and/or sequences created during an interval of time (T) are used in the second operating mode (M2) to create at least one 3D image immediately before and/or after a triggering command (A).

公开(公告)号：US09978172B2

公开(公告)日：2018-05-22

申请号：US14421219

申请日：2013-08-14

Applicant: DENTSPLY SIRONA Inc.

Inventor： Anders Adamson ,  Burkhard Lehner ,  Joost Sattler ,  Tom Bobach ,  Frank Thiel

IPC: G06T17/00 ,  A61C9/00 ,  G06T7/00 ,  G06T19/00 ,  G06T15/20

CPC classification number: G06T17/00 ,  A61C9/00 ,  A61C9/0053 ,  A61C11/00 ,  G06T7/344 ,  G06T7/50 ,  G06T15/20 ,  G06T19/00 ,  G06T2210/32 ,  G06T2210/41 ,  G06T2219/016 ,  G06T2219/2008 ,  G06T2219/2021

Abstract: The invention relates to a method for recording individual three-dimensional optical images (1) to form a global image (50) of a tooth situation comprising an upper jaw (2) and a lower jaw (3). A first 3D model (6) of a first subsection of the upper jaw and a second 3D model (8) of a second subsection of the lower jaw are produced from the individual images. Subsequently, a geometric positional relationship between the first 3D model (6) and the second 3D model (8) is determined, said positional relationship being determined by using a lateral image (20, 21, 22) and/or using a contact pattern (31, 32). Said lateral image (20, 21, 22) comprises an image area which comprises at least part of the first subsection of the upper jaw (2) and at least part of the second subsection of the lower jaw (3). Said contact pattern comprises several contact areas (31, 32) between the upper jaw and the lower jaw. Said contact pattern (30, 31, 32) is measured by means of an occlusion paper (29).