公开(公告)号：US11337781B2

公开(公告)日：2022-05-24

申请号：US15742546

申请日：2016-07-06

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Paul Schnitzspan ,  Thorsten Jordan ,  Friedemann Roessler

IPC: A61C8/00 ,  A61C5/70 ,  A61C13/34 ,  G16H20/40

Abstract: A method for producing a tooth replacement part to be secured on an implant, based on a 3D model of the tooth replacement part with a surface and with a continuous screw channel with an initial shape in the form of a cylindrical barrel, with a first and a second end, wherein a cross sectional area of the screw channel is designed to be constant and/or to increase in size towards the second end of the screw channel. A 3D model of an inlay with a jacket surface, an upper face and a lower face is generated. A part of the surface of the 3D model of the tooth replacement part that is cut out through the second end of the final shape of the screw channel is used as the upper face and the jacket surface is configured as a negative form of a part of the final shape of the screw channel that adjoins the second end.

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：US10849722B2

公开(公告)日：2020-12-01

申请号：US16300992

申请日：2017-05-19

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Andreas Schafer

IPC: A61C13/00 ,  G06F30/00 ,  A61C1/08

Abstract: The invention relates to a method for the computer-assisted manufacturing of a dental replacement part or a dental auxiliary element from a blank, which can be rotated about an axis of rotation, by means of a machining tool, wherein a blank data set comprising the axis of rotation and a model data set of the dental replacement part or dental auxiliary element are stored and the model data set has a first region having a first insertion axis and a second region having a second insertion axis askew to the first insertion axis, wherein in a first positioning step (S1) the model data set is arranged in the blank data set in such a way that the first insertion axis of the model data set is oriented perpendicular to the axis of rotation of the blank data set and in a second positioning step (S2) the second insertion axis of the model data set is oriented perpendicular to the axis of rotation of the blank data set by rotating the model data set about the first insertion axis.

公开(公告)号：US10588494B2

公开(公告)日：2020-03-17

申请号：US15575858

申请日：2016-05-20

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Frank Thiel ,  Joachim Pfeiffer

IPC: A61B1/00 ,  A61C9/00 ,  A61B1/04 ,  A61B1/06 ,  A61B1/247 ,  G01B11/25 ,  G01B11/24

Abstract: The invention relates to a method and a camera for the three-dimensional measurement of a dental object, comprising at least one light source that emits an illumination beam, at least one projection mask that produces a projection pattern, focusing optics that display the projection pattern in a plane of sharp focus at a defined focal distance relative to the dental camera. The projection pattern projected onto the object is reflected by the object as an observation beam and is acquired by means of a sensor. During the measurement of the object, the focusing optics are controlled in such a way that the focal distance of the plane of sharp focus relative to the camera is adjusted incrementally between a number of defined scan positions.

公开(公告)号：US20200046465A1

公开(公告)日：2020-02-13

申请号：US16344860

申请日：2017-11-03

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Oliver NOWARRA ,  Joachim PFEIFFER ,  Peter FORNOFF

IPC: A61C7/16 ,  A61C5/30 ,  A61C8/00

Abstract: The invention relates to a method for contructing at least one dental prosthetic part (20) or a bracket, with at least one adhesive surface (2), in which a 3D model (1) is made of the dental prosthetic part (20). Recesses (3,9,12,15,29,31) are constructed on the adhesive surface (2) of the 3D model (1).

公开(公告)号：US10234529B2

公开(公告)日：2019-03-19

申请号：US15355104

申请日：2015-05-19

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Volker Rasche ,  Stefan Wundrak

IPC: G01R33/56 ,  G01R33/563 ,  G01R33/48 ,  G01R33/565 ,  A61B5/11 ,  A61B5/00 ,  A61B5/055

Abstract: Disclosed is a method for producing magnetic resonance tomography images (B) of at least one phase of a cyclic movement, comprising the method steps: production of raw data sets (r1, . . . , rx) of the cyclic movement during a recording period (T) having radial or almost radial k-space part trajectories (k1, . . . , kx); reconstruction of a series of intermediate images (z1, . . . , zy), each from at least one raw data set (r1, . . . , rx) with high time resolution at least for each region (region of interest, ROI) of the raw data sets (r1, . . . , rx); calculation of a distance matrix (D) from the series of intermediate images (z1, . . . , zy), wherein each matrix element (D) corresponds to the distance of a first intermediate image (z1, . . . , zy) of the series to the first or a further intermediate image (z1, . . . , zy) of the series; fitting of functions (vi, . . . , vz) to structures forming in the distance matrix (D) by means of an active contour method and reconstruction of at least one image (B) from the raw data sets (r1, . . . , rx), said raw data sets corresponding to intersection (S) of the fitted curves (v1, . . . , vz) with a line of the distance matrix (D).

公开(公告)号：US20190049184A1

公开(公告)日：2019-02-14

申请号：US16077516

申请日：2017-02-22

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Rainer JUMPERTZ

IPC: F27B17/02 ,  F27D15/02

Abstract: The invention relates to a furnace 1 having a vertical orientation for dental components 11, comprising a combustion chamber 2, which is open at the bottom and the opening 2.1 of which can be closed by means of a furnace door 3, which is lowered in the vertical direction in the open position, and comprising a depositing region 10 for the heated component 11, which depositing region is arranged at a distance from the opening 3 in the combustion chamber 2. The depositing region is part of the furnace, and a cooling device that acts on the depositing region is arranged on or in the furnace. A heat-resistant base 21 has a heat-resistant support 12 arranged in a housing 22, which support has an active or passive cooling device, which, for example, has a Peltier element 30.

公开(公告)号：US20180125338A1

公开(公告)日：2018-05-10

申请号：US15575871

申请日：2016-05-20

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Joachim PFEIFFER ,  Frank THIEL

IPC: A61B1/00 ,  G01B11/25 ,  A61C9/00 ,  A61B1/247

CPC classification number: A61B1/00172 ,  A61B1/00188 ,  A61B1/247 ,  A61C9/006 ,  A61C9/0066 ,  G01B11/25 ,  G01B11/2513 ,  G01B11/2527

Abstract: The invention relates to a method and to a camera for the three-dimensional measurement of a dental object, comprising at least one light source, which emits an illumination beam, at least one projection means, which produces a projection pattern, focusing optics, which display the projection pattern in a plane of sharp focus at a defined focal distance relative to the dental camera. The projection pattern projected onto the object is reflected by the object as an observation beam and is acquired by means of a sensor. In the measurement of the object, the focusing optics are controlled in such a way that the focal distance of the plane of sharp focus relative to the camera is varied incrementally between a plurality of defined scan positions.

公开(公告)号：US20180125337A1

公开(公告)日：2018-05-10

申请号：US15575858

申请日：2016-05-20

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Frank THIEL ,  Joachim PFEIFFER

IPC: A61B1/00 ,  A61B1/247 ,  A61B1/04

Abstract: The invention relates to a method and a camera for the three-dimensional measurement of a dental object, comprising at least one light source that emits an illumination beam, at least one projection mask that produces a projection pattern, focusing optics that display the projection pattern in a plane of sharp focus at a defined focal distance relative to the dental camera. The projection pattern projected onto the object is reflected by the object as an observation beam and is acquired by means of a sensor. During the measurement of the object, the focusing optics are controlled in such a way that the focal distance of the plane of sharp focus relative to the camera is adjusted incrementally between a number of defined scan positions.

公开(公告)号：US09936166B2

公开(公告)日：2018-04-03

申请号：US14646095

申请日：2013-11-19

Applicant: Sirona Dental Systems GmbH

Inventor： Kai Lindenberg ,  Ciamak Abkai

IPC: H04N7/18 ,  A61C9/00 ,  G01B11/25 ,  G06T7/00 ,  H04N5/265 ,  H04N13/02

CPC classification number: H04N7/18 ,  A61C9/0046 ,  G01B11/254 ,  G06T7/0012 ,  H04N5/265 ,  H04N13/20

Abstract: The invention relates to a method for planning or for checking the planning of a dental and/or a maxillofacial treatment, wherein at least one video recording of an object (3) is recorded by means of at least one video camera (1). A patient model (4) is available which comprises image data of the object (3), wherein the video recording is virtually coupled to the patient model (4) in such a way that a viewing direction (13) of the view of the patient model (4) is changed in dependence on a changing recording direction (9, 46, 47, 48, 49, 50) of the video recording when the video camera (1) is moved in relation to the object (3).