US 12,031,867 B2
System and method for determining the color of teeth and attachment for use in the system
Ronny Kucharczyk, Worms (DE); Frederike Franke, Darmstadt (DE); and Björn Voss, Heidelberg (DE)
Assigned to DENTSPLY SIRONA INC., York, PA (US)
Appl. No. 17/291,004
Filed by DENTSPLY SIRONA INC., York, PA (US)
PCT Filed Nov. 8, 2019, PCT No. PCT/EP2019/080681
§ 371(c)(1), (2) Date May 4, 2021,
PCT Pub. No. WO2020/094841, PCT Pub. Date May 14, 2020.
Claims priority of application No. 18205249 (EP), filed on Nov. 8, 2018.
Prior Publication US 2021/0389182 A1, Dec. 16, 2021
Int. Cl. G01J 3/50 (2006.01); A61C 19/04 (2006.01); G01B 11/02 (2006.01); G01J 3/52 (2006.01); G06T 7/70 (2017.01); G06T 7/90 (2017.01); H04N 23/55 (2023.01); H04N 23/57 (2023.01)
CPC G01J 3/508 (2013.01) [A61C 19/04 (2013.01); G01B 11/026 (2013.01); G01J 3/524 (2013.01); G06T 7/70 (2017.01); G06T 7/90 (2017.01); H04N 23/55 (2023.01); H04N 23/57 (2023.01); G06T 2207/30036 (2013.01)] 19 Claims
OG exemplary drawing
 
1. System for determining the color of a tooth, which comprises:
a 2D or 3D camera and
an attachment, which is fitted on said camera, and placed on the tooth, wherein the attachment has a connecting means for fitting the attachment to the camera, an aperture via which the camera for capturing an image of the tooth, and a spacer for creating a distance between a capture device of the camera and the aperture, wherein the spacer creates a distance between the capture device of the camera and the tooth surface,
wherein the camera has a first recording mode for use without the attachment, and a color measurement mode for use with the attachment for measuring the color of the tooth,
wherein the system is adapted to recognize changes to the image field captured by the camera and to switch from the first recording mode to the color measurement mode when the attachment is fitted on the camera
wherein the attachment further comprises:
a holder, which provides a light tight connection via the connecting means to an area of the camera opening of the camera, which is circumferential to said camera opening; and
an adapter connected lighttight to the holder and comprising at least one front side in front of the camera opening at the distal end to the camera opening of the optical path of the attachment, and comprising at least one aperture and the support located at least partially adjacent the aperture.