公开(公告)号：US12031867B2

公开(公告)日：2024-07-09

申请号：US17291004

申请日：2019-11-08

Applicant: DENTSPLY SIRONA INC.

Inventor： Ronny Kucharczyk ,  Frederike Franke ,  Björn Voss

IPC: G01J3/50 ,  A61C19/04 ,  G01B11/02 ,  G01J3/52 ,  G06T7/70 ,  G06T7/90 ,  H04N23/55 ,  H04N23/57

CPC classification number: G01J3/508 ,  A61C19/04 ,  G01B11/026 ,  G01J3/524 ,  G06T7/70 ,  G06T7/90 ,  H04N23/55 ,  H04N23/57 ,  G06T2207/30036

Abstract: The invention relates to a system and a method for determining the color of teeth or tooth surfaces, wherein the system comprises a 2D or 3D camera and an attachment on said camera, which sets a geometry of a captured image in such a way that, compared to capturing an image without the attachment, the distance, spatial angle and orientation of tooth surfaces relative to the camera are restricted. The attachment according to the invention can in particular be fitted to the camera in a simple manner.

公开(公告)号：US11864963B2

公开(公告)日：2024-01-09

申请号：US17298195

申请日：2019-11-25

Applicant: DENTSPLY SIRONA INC.

Inventor： Frederike Franke ,  Christoph Brandes ,  Michael Bäurer ,  Björn Voss

IPC: A61C13/08 ,  A61C13/00 ,  A61C13/083 ,  B28B11/12 ,  B28B11/24

CPC classification number: A61C13/082 ,  A61C13/0004 ,  A61C13/083 ,  B28B11/12 ,  B28B11/243

Abstract: The invention relates to a method and to a corresponding system for providing a dental prosthesis made from ceramic material having a colour matched to the patient comprising the following steps: (i) receiving a desired nominal colour for the dental prosthesis, determining a deviation between the nominal colour and actual colour of the sintered ceramic material by the control unit and defining a temperature time cycle having a cycle time suitable for compensation of the deviation, for sintering at a defined sintering temperature and creating a corresponding sintering program by the control unit; and (ii) adjusting the actual colour of the selected ceramic material to the nominal colour in the sintering furnace by the sintering program executed by the sintering furnace.

公开(公告)号：US11058282B2

公开(公告)日：2021-07-13

申请号：US16493497

申请日：2018-03-16

Applicant: DENTSPLY SIRONA INC.

Inventor： Frederike Franke ,  Marcel Meyer ,  Teena Steger

IPC: H04N9/73 ,  A61B1/00 ,  A61B1/04 ,  A61B1/24 ,  G01J3/02 ,  G01J3/50 ,  G01J3/52 ,  H04N17/00 ,  H04N17/02

Abstract: The invention relates to a color reference for calibrating a dental color camera comprising a plurality of fields. A surface of the color reference comprises color fields for color calibration as well as white fields and/or gray fields for a white balance and/or a shading correction.

公开(公告)号：US11361524B1

公开(公告)日：2022-06-14

申请号：US17211922

申请日：2021-03-25

Applicant: DENTSPLY SIRONA INC.

Inventor： Hong Keun Kim ,  Anders Adamson ,  Ole Jakubik ,  Frederike Franke

IPC: G06T19/20 ,  G06T17/00 ,  G16H50/50 ,  G06N20/00

Abstract: The quality of digital impressions geometry and color but also fluorescence, transillumination, reflection and absorption properties can be inferior to single frame 2D/3D images e.g. due to averaging effects, rendering effects, difficult scanning situation etc. This can lead to difficulties in the dental workflow such as the creation of a preparation margin line or detection of diseases such as caries. By providing a correlated view of high-quality single frame images and corresponding 3D models, the dental workflow can be guided to be completed more efficiently using the single frame images.

公开(公告)号：US20210389182A1

公开(公告)日：2021-12-16

申请号：US17291004

申请日：2019-11-08

Applicant: DENTSPLY SIRONA INC.

Inventor： Ronny Kucharczyk ,  Frederike Franke ,  Björn Voss

IPC: G01J3/50 ,  A61C19/04 ,  G06T7/70 ,  G06T7/90 ,  G01B11/02 ,  G01J3/52 ,  H04N5/225

Abstract: The invention relates to a system and a method for determining the color of teeth or tooth surfaces, wherein the system comprises a 2D or 3D camera and an attachment on said camera, which sets a geometry of a captured image in such a way that, compared to capturing an image without the attachment, the distance, spatial angle and orientation of tooth surfaces relative to the camera are restricted. The attachment according to the invention can in particular be fitted to the camera in a simple manner.