公开(公告)号：US20180299262A1

公开(公告)日：2018-10-18

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

CPC classification number: G01B11/2513 ,  A61B1/00009 ,  A61B1/00193 ,  A61B1/0646 ,  A61B1/24 ,  G01B11/25

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：US20210256696A1

公开(公告)日：2021-08-19

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 ,  G06T15/08 ,  G06T15/04 ,  A61B5/00 ,  A61C9/00

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：US20190328222A1

公开(公告)日：2019-10-31

申请号：US16508871

申请日：2019-07-11

Applicant: DENTSPLY SIRONA Inc.

Inventor： Anders ADAMSON ,  Frank THIEL ,  Ulf WILLERS

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

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：US20180240270A1

公开(公告)日：2018-08-23

申请号：US15957060

申请日：2018-04-19

Applicant: DENTSPLY SIRONA Inc.

Inventor： Anders ADAMSON ,  Burkhard LEHNER ,  Joost SATTLER ,  Tom BOBACH ,  Frank THIEL

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

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 to form a global image of a tooth situation comprising an upper jaw and a lower jaw. A first 3D model of a first subsection of the upper jaw and a second 3D model of a second subsection of the lower jaw are produced from the individual images. Subsequently, a geometric positional relationship between the first 3D model and the second 3D model is determined, said positional relationship being determined by using a lateral image and/or using a contact pattern. Said lateral image comprises an image area which comprises at least part of the first subsection of the upper jaw and at least part of the second subsection of the lower jaw. Said contact pattern comprises several contact areas between the upper jaw and the lower jaw. Said contact pattern is measured by means of an occlusion paper.

公开(公告)号：US20210251729A1

公开(公告)日：2021-08-19

申请号：US17251345

申请日：2019-06-17

Applicant: DENTSPLY SIRONA INC.

Inventor： Sascha SCHNEIDER ,  Frank THIEL

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

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：US20170128173A1

公开(公告)日：2017-05-11

申请号：US15129728

申请日：2015-03-27

Applicant: Dentsply Sirona Inc.

Inventor： Markus BERNER ,  Frank THIEL

IPC: A61C9/00 ,  A61B5/00

CPC classification number: A61C9/0053 ,  A61B5/0062 ,  A61B5/0088 ,  A61B5/1077 ,  A61B5/1079 ,  G01B11/2518

Abstract: The invention relates to a scanning device, comprising a handle (10) to be held by an operating person and a mouthpiece (20). The scanning device is inserted into the mouth of a patient by means of the mouthpiece (20). There, during a recording by means of a sensing apparatus provided in the mouthpiece and a scanning apparatus (60), a section of a dental arch in the mouth is scanned and three-dimensionally measured, wherein many individual scans of different sections of the dental arch are recorded and are combined into a total image. The scanning device also has a drive apparatus (80), which drives the sensing apparatus in such a way that the sensing apparatus moves from one section to a next section of the dental arch in order to perform a particular individual scan, and a control apparatus (70), which controls the drive apparatus (80) in such a way that the drive apparatus moves the sensing apparatus to a desired location of the dental arch.