公开(公告)号：US20250162255A1

公开(公告)日：2025-05-22

申请号：US18729685

申请日：2023-01-24

Applicant: Dentsply Sirona Inc. ,  SIRONA Dental Systems GmbH

Inventor： Sebastian SAUL ,  Christoph BRANDES

IPC: B29C64/291 ,  B29C64/245 ,  B29C64/307 ,  B33Y30/00

Abstract: The present invention relates to an additive manufacturing apparatus for additively manufacturing a component, including: a resin vat unit which includes: a reservoir for storing UV light photocurable resin; and a UV-transparent window at the bottom of the reservoir, the UV-transparent window includes a UV-transparent plate and a UV-transparent anti-adhesive flexible foil; a projection unit for projecting UV light through the UV-transparent window into the reservoir; a movable building platform having a surface onto which the component can be formed through layerwise curing of said resin. The UV-transparent window further includes: an optical means which is adapted to diffuse the projected UV light towards the building platform into a region (R) where the UV light photocurable resin is to be layerwise cured, the optical means is arranged in the light path of the projected UV light.

公开(公告)号：US20240393414A1

公开(公告)日：2024-11-28

申请号：US18692498

申请日：2022-08-19

Applicant: SIEMENS HEALTHINEERS AG ,  Dentsply Sirona Inc. ,  SIRONA Dental Systems GmbH

Inventor： Andreas Greiser ,  Stefan Wundrak ,  Titus Lanz ,  Stephan Biber

IPC: G01R33/3415 ,  G01R33/34 ,  G01R33/36 ,  G01R33/54

Abstract: A local coil may have a mounting, at least one antenna, and a flexible element. The mounting may position the local coil in a specified position relative to the head of a patient, where the antenna may receive high-frequency signals in a frequency and power range of a magnetic resonance (MR) measurement. The flexible element may at least partly form the local coil on the surface contour of the patient's head. The local coil may at least partly surround the patient's head when the local coil is positioned during use, and a section of the local coil including the antenna can be positioned on the patient's temporomandibular joint using the mounting. The local coil may receive MR signals of the temporomandibular joint using the antenna. A MR device may include the local coil and detect MR signals of a region of the patient using the local coil.

公开(公告)号：US20240377487A1

公开(公告)日：2024-11-14

申请号：US18692645

申请日：2022-08-22

Applicant: Siemens Healthineers AG ,  Dentsply Sirona Inc. ,  SIRONA Dental Systems GmbH

Inventor： Andreas Greiser ,  Johannes Ulrici ,  Florian Odoj ,  Marco Geißner

IPC: G01R33/34 ,  A61B5/055 ,  G01R33/28

Abstract: A local coil including an antenna, base element, holding element, first and second guide mechanisms, and safety mechanism. The antenna receives high-frequency signals in a frequency range and power range of a magnetic resonance measurement and is mechanically connected to the holding element. The base element holds the holding element together with the antenna in a position for use on a diagnostically relevant body region of a patient. The first guide mechanism is mechanically connected to the base element and the holding element and positions the holding element variably relative to the base element. The second guide mechanism is mechanically connected to the holding element and the antenna and positions the antenna variably relative to the holding element. The safety mechanism prevents a collision between the antenna and the patient during a transfer of the holding element from an open position into a closed position using the first guide mechanism.

公开(公告)号：US20240316870A1

公开(公告)日：2024-09-26

申请号：US18578452

申请日：2022-07-12

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Christian STAHL

IPC: B29C64/393 ,  B29C64/124 ,  B29C64/245 ,  B29C64/255 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

CPC classification number: B29C64/393 ,  B29C64/124 ,  B29C64/245 ,  B29C64/255 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: Aspects relates to a 3D printer including a vat having an at least partially transparent bottom for receiving liquid photoreactive resin to produce a solid component; a building platform for holding and pulling out the component layer by layer from the vat; a projector for projecting the layer geometry onto the transparent bottom; a transport apparatus for at least downward and upward movement of the building platform in the tray; and a control device for controlling the projector and the transport apparatus. The control device optimally feed forward controls the pull-off movement of the build platform in the 3D printer using a neural network.

公开(公告)号：US12048576B2

公开(公告)日：2024-07-30

申请号：US17605644

申请日：2020-04-23

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Michael Elvers ,  Ulrich Schulze-Ganzlin ,  Stefan Eichner

IPC: A61B6/51 ,  A61B6/46 ,  G06T7/00 ,  G06T7/11

CPC classification number: A61B6/51 ,  A61B6/469 ,  G06T7/0012 ,  G06T7/11 ,  G06T2207/10116 ,  G06T2207/30036

Abstract: A method for generating a panoramic layer image of an object to be imaged, by employing a 2D panoramic X-ray device, the object being imaged by projecting X-rays generated by an X-ray source through the object in a projection direction and recording the X-rays with an X-ray detector. Several 2D X-ray projection images are continuously recorded from various imaging directions while the X-ray source and the X-ray detector move around the object. At least one panoramic layer image is calculated from the recorded 2D X-ray projection images using a reconstruction method. The panoramic layer image is calculated by selecting and employing at least one partial area from at least two 2D X-ray projection images in relation to an active sensor area.

公开(公告)号：US11915378B2

公开(公告)日：2024-02-27

申请号：US17310278

申请日：2020-01-22

Applicant: DENTSPLY SIRONA INC. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： André Koza ,  Ronny Kucharczyk

IPC: G06T19/00 ,  A61C7/00 ,  A61C9/00 ,  G06T7/11 ,  G06T7/70 ,  G06T7/00 ,  G06T7/20

CPC classification number: G06T19/006 ,  A61C7/002 ,  A61C9/004 ,  G06T7/0012 ,  G06T7/11 ,  G06T7/20 ,  G06T7/70 ,  G06T2200/04 ,  G06T2207/30036 ,  G06T2207/30201

Abstract: A method, system and computer readable storage media for proposing and visualizing orthodontic treatments. A patient may use a mobile device such as a smart phone to quickly and inexpensively visualize an orthodontic treatment for misaligned teeth and overlay it on a 3D model of the face and jaw, with a depth sensor being used to detect depth information. The orthodontic treatment may also be visualized in an augmented manner for a clinician. 3D data of the orthodontic treatment may be used for further analysis or fabrication of a treatment appliance.

公开(公告)号：US20240051041A1

公开(公告)日：2024-02-15

申请号：US17641218

申请日：2020-09-24

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Andreas SCHAEFER ,  Oliver NOWARRA ,  Michael TURZER ,  Peter FORNOFF

IPC: B23C5/00 ,  A61C13/00 ,  G06K19/07

CPC classification number: B23C5/006 ,  A61C13/0004 ,  G06K19/0723 ,  A61C2204/005

Abstract: A dental tool (1) for use in a dental CNC milling/grinding machine for machining a dental restoration from a workpiece (6), the dental tool (1) has a shaft (2). The dental tool includes a miniaturized RFID tag (3) which is arranged in front of the back end (2a) of the shaft (2). A dental CNC milling/grinding machine (5) is also disclosed and has a machine compartment (5a) including one or more carriage units (5b) each adapted to exchangeably receive and drive one or more dental tools (1) for machining a dental restoration from a workpiece (6); one or more transceiver units (5c) each adapted to read and/or write the miniaturized RFID tag (3) of a dental tool (1); and a control unit adapted to control the transceiver units (5c), and the carriage units (5b) based on the information read from the miniaturized RFID tags (3).

公开(公告)号：US11884017B2

公开(公告)日：2024-01-30

申请号：US17431239

申请日：2020-02-25

Applicant: SIRONA DENTAL SYSTEMS GMBH ,  DENTSPLY SIRONA inc.

Inventor： Christian Schmidt ,  Thomas Hasenzahl ,  Michael Schwaiger ,  Markus Kuhnle ,  Andreas Ries ,  Torsten Richter

IPC: B29C64/255 ,  B33Y30/00 ,  B33Y50/00 ,  B29C64/314 ,  B29C64/343 ,  B29C64/386 ,  B33Y40/10 ,  G01F23/263

CPC classification number: B29C64/255 ,  B29C64/314 ,  B29C64/343 ,  B29C64/386 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y50/00 ,  G01F23/263

Abstract: Material unit for an additive manufacturing device (AM) having a resin vat, wherein the resin vat comprises a base which is transparent at least in sections, wherein the resin vat is connected to a holder for a reservoir, and wherein the holder is configured such that resin (R) emerging from an outlet of a reservoir held by said holder can flow into the resin vat.

公开(公告)号：US11820079B2

公开(公告)日：2023-11-21

申请号：US17433356

申请日：2020-03-11

Applicant: DENTSPLY SIRONA inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Thomas Michalica ,  Christian Schmidt ,  Franz Basler

IPC: B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/232 ,  B29C64/236 ,  B29C64/241 ,  B29C64/129

CPC classification number: B29C64/393 ,  B29C64/129 ,  B29C64/232 ,  B29C64/236 ,  B29C64/241 ,  B33Y30/00 ,  B33Y50/02

Abstract: The present invention relates to a stereolithography apparatus for generating a three-dimensional object, comprising: an optical unit for projecting an image towards the photocurable substance for hardening the photocurable substance deposited in the focus layer; a control unit, characterized by further comprising: a detection unit which comprises: a detection means movably arranged in a detection region for detecting during the generation process or in a generation-pause the image projected by the optical unit and for outputting a detection signal; and a first driving means for moving the detection means into or out of the detection region, wherein the optical unit comprises: a second driving means linked to the optical unit for moving the focus layer into or out of the detection region, wherein the control unit adjusts the optical unit and/or modifies the image to be projected based on the signal indicative of the detected image.

公开(公告)号：US20220338965A1

公开(公告)日：2022-10-27

申请号：US17640966

申请日：2020-09-21

Applicant: DENTSPLY SIRONA Inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Daniel WEISS ,  Oliver NOWARRA ,  Peter FORNOFF

IPC: A61C13/00 ,  A61C9/00

Abstract: A method of manufacturing a dental restoration including a construction step (S2) of preparing construction data for a dental tool machine for machining the dental restoration from a workpiece. The construction data defines at least the geometry of the dental restoration within the workpiece. The method includes a starting step (S3) of starting machining of the dental restoration from the workpiece in accordance with the construction data. The method also includes a preparing step (S4) of starting preparing, before termination of the construction step (S2), the dental tool machine at least through equipping it with all the consumables essential for starting the starting step (S3), and completing preparing the dental tool machine before start of the starting step (S3).