公开(公告)号：US20250006345A1

公开(公告)日：2025-01-02

申请号：US18709194

申请日：2022-11-01

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Hong Keun KIM

IPC: G16H30/40 ,  G16H40/63

Abstract: Improving a medical scan of a head anatomy of a patient by: providing a number of scan datasets related to the head anatomy; providing intraoral data related to one or more intraoral features of the patient; determining, using the intraoral data, those parts of the scan datasets during acquisition of which a movement related to the intraoral features is detected; constructing and/or correcting the medical scan, from the scan datasets, in response to the determination. The present teachings also relate to a method of improving a CT scan, a system, a device, and a storage medium.

公开(公告)号：US12178670B2

公开(公告)日：2024-12-31

申请号：US17292823

申请日：2019-11-13

Applicant: DENTSPLY SIRONA INC. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Siegfried Goisser ,  Stefan Göbel

IPC: A61C1/05 ,  A61C1/18

Abstract: A dental turbine driven by pressurized air comprises a head housing (1) with a turbine chamber (2) and a rotor shaft (3) mounted using an anti-friction bearing (8a) with a non-rotatably mounted turbine wheel (13). The outer race (10a) of the anti-friction bearing (8a) extends into the turbine chamber (2) in axial direction. The turbine wheel (13) comprises an annular web (16a) that is arranged concentrically to the outer race (10a) of the anti-friction bearing (8a) and, together with the outer race (10a), forms a gap seal (17a). This gap seal (17a) extends in axial direction between outer race (10a) and annular web (16a) and prevents the sucking-in of liquids and dirt particles into the turbine chamber (2) during inertial rotation of the turbine wheel (13).

公开(公告)号：US20240320880A1

公开(公告)日：2024-09-26

申请号：US18578937

申请日：2022-07-05

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA Dental Systems GmbH

Inventor： Ulrich SCHULZE-GANZLIN ,  Susanne MAUR ,  Markus HUELSBUSCH

IPC: G06T11/00 ,  G06T7/00

CPC classification number: G06T11/008 ,  G06T7/0012 ,  G06T2207/10072 ,  G06T2207/30036 ,  G06T2207/30168 ,  G06T2210/41 ,  G06T2211/424 ,  G06T2211/448

Abstract: Aspects relate to a method for reconstructing a digital volume tomography (DVT) imaging in the dental field including (S1) estimating the projection geometry from the sinogram of a patient imaging using motion artifact compensation (MAC); (S2) reconstructing a first volume using the estimated projection geometry; (S3) detecting the metal regions in the sinogram and in the first volume using the first volume and the estimated projection geometry; (S4) correcting the metal regions in the sinogram and generating a corrected sinogram; (S5) reconstructing a second volume with the estimated projection geometry and the corrected sinogram; and (S6) correcting the metal regions in the second volume.

公开(公告)号：US12023191B2

公开(公告)日：2024-07-02

申请号：US17601947

申请日：2020-04-17

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Wolf Blecher ,  Franziska Riversa ,  Ulrich Schulze-Ganzlin ,  Kai Lindenberg ,  Christian Beckhaus

IPC: A61B6/51 ,  A61B6/03 ,  A61B6/46 ,  G02B27/01 ,  G06F3/01

CPC classification number: A61B6/51 ,  A61B6/032 ,  A61B6/462 ,  G02B27/017 ,  G06F3/011 ,  G02B2027/0138 ,  G02B2027/014 ,  G02B2027/0178

Abstract: An apparatus for real-time visualizing a movement of a lower jaw versus an upper jaw including: an input interface for receiving a two-dimensional image signal of the craniomaxillofacial area of the patient from a camera and a three-dimensional jaw model of the craniomaxillofacial area of the patient being precalculated based on volume data; a registration unit for registering the three-dimensional jaw model with the two-dimensional image signal in a first jaw position of the lower jaw versus the upper jaw and in a second jaw position of the lower jaw versus the upper jaw; an imaging unit for generating a two-dimensional depth-view of the craniomaxillofacial area from the three-dimensional jaw model based on the conducted registrations and the two-dimensional image signal, the two-dimensional depth-view including a structure underlying an image area of the two-dimensional image signal; and an output interface for outputting the two-dimensional depth-view.

公开(公告)号：US11998405B2

公开(公告)日：2024-06-04

申请号：US16344829

申请日：2017-10-30

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Daniel Müllner ,  Clemens Gross

IPC: A61C13/00 ,  A61C9/00 ,  G06F30/00 ,  G06F30/10 ,  G06F30/20 ,  G06T19/20 ,  A61C1/08 ,  A61C8/00

CPC classification number: A61C13/0004 ,  A61C9/0006 ,  G06F30/00 ,  G06F30/10 ,  G06F30/20 ,  G06T19/20 ,  A61C1/084 ,  A61C8/0068 ,  G06T2210/41 ,  G06T2219/2004 ,  G06T2219/2021

Abstract: The invention related to a method for planning a dental structure, in which a 3D model of the structure, with at least one radially symmetrical aperture, is already provided. On the basis of the 3D model of the structure that is already provided, an axis of symmetry of the at least one radially symmetrical aperture of the structure is determined in relation to said 3D model.

公开(公告)号：US11737859B2

公开(公告)日：2023-08-29

申请号：US16766339

申请日：2018-11-23

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Susanne Rabe

IPC: A61C13/00 ,  A61C13/271 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y80/00 ,  G05B19/4099 ,  G06Q50/04 ,  G16H50/50

CPC classification number: A61C13/0004 ,  A61C13/0019 ,  A61C13/26 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y80/00 ,  G05B19/4099 ,  G16H50/50 ,  G05B2219/49023 ,  G06Q50/04

Abstract: The invention relates to a dental prosthesis part production method, wherein: a dental prosthesis part model is generated taking into account a dental model; a load analysis of the dental prosthesis part model is carried out; a first reinforcing structure model having a first shape and position is arranged inside the dental prosthesis part model and the dental prosthesis part model is reduced by a volume corresponding to the arranged first reinforcing structure model; the reduced dental prosthesis part model is divided into a lower partial volume and an upper partial volume; a lower part of the dental prosthesis part is produced from a first composite material according to the lower partial volume by means of the 3D printer; a first reinforcing structure corresponding to the first reinforcing structure model is arranged on the first part of the dental prosthesis part; and, by means of the 3D printer using the first composite material, an upper part of the dental prosthesis part according to the upper partial volume is placed onto the lower part of the dental prosthesis part comprising the arranged first reinforcing structure.

公开(公告)号：US20230148336A1

公开(公告)日：2023-05-11

申请号：US17916084

申请日：2021-03-26

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA Dental Systems GmbH

Inventor： Christian STAHL ,  Christoph BRANDES

IPC: B29C64/245 ,  B33Y30/00

CPC classification number: B29C64/245 ,  B33Y30/00 ,  B29C64/124

Abstract: A building plate assembly for use in an additive manufacturing apparatus including means for additively manufacturing a component through curing photocurable resin, the building plate assembly including: a building plate having a front surface on which the component can be attached during the additive manufacturing; a plurality of through holes formed between the rear surface and the front surface of the building plate; further including: a detachment means having one or more projections which can be relatively moved towards the rear surface and into the through-holes to detach the component from the front surface and, retracted to at least partly clear the through-holes. The through-holes and the corresponding projections are arranged in a two-dimensional array.

公开(公告)号：US20220331073A1

公开(公告)日：2022-10-20

申请号：US17640938

申请日：2020-09-21

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Peter FALTIN ,  Oliver NOWARRA

IPC: A61C13/00 ,  A61C3/02 ,  B23Q39/02 ,  B24B27/00

Abstract: A computer-implemented method of planning of the shapes of free-form tool paths (P) for simultaneous two-sided machining of a dental restoration (1) having an individual free-form target geometry from a workpiece (2) by using a dental tool machine (3) having at least two tool spindles each having at least one tool (4) arranged on a different side of the workpiece (2) which is simultaneously movable along an axis (y) relative to the tools (4) thereby imposing a kinematic axis coupling. The method includes a step of determining transformations (T′, T″) of the target geometry by which the kinematic axis coupling is converted into a common coupling parameter for both tools (4); and a step of generating dependent on these transformations (T′, T″) the shapes of the free-form tool paths (P) in which the common coupling parameter is identical in time for all participating tool spindles that are driven simultaneously.

公开(公告)号：US20220134657A1

公开(公告)日：2022-05-05

申请号：US17431456

申请日：2020-02-28

Applicant: DENTSPLY SIRONA inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Christian SCHMIDT ,  Thomas HASENZAHL

IPC: B29C64/25 ,  B29C64/35 ,  B29C64/255 ,  B29C64/264 ,  B29C64/295 ,  B29C64/371 ,  B29C64/129

Abstract: Component carrier for an additive manufacturing device, wherein the component carrier comprises a construction surface, on which a component to be manufactured is disposed during the operation of the manufacturing device, wherein the component carrier comprises a sealing surface which radially surrounds the construction surface, and method for post-processing a component manufactured according to an additive manufacturing process using such a component carrier.

公开(公告)号：US20210169609A1

公开(公告)日：2021-06-10

申请号：US16616730

申请日：2018-06-04

Applicant: SIRONA DENTAL SYSTEMS GMBH

Inventor： Christian SCHMIDT ,  Peter FORNOFF

IPC: A61C7/00 ,  A61C13/34 ,  A61C7/08

Abstract: The invention relates to a method for producing a dental aid from a thermoplastic film or plate, wherein a digital three-dimensional working model is created in a computer-aided manner using a three-dimensional data set of at least one part of an upper jaw and/or lower jaw.