US 12,423,932 B2
Method and system for evaluating a dental preparation surface
Thomas Lundgaard Hansen, Copenhagen K (DK); and Karl-Josef Hollenbeck, Copenhagen Ø (DK)
Assigned to 3SHAPE A/S, Copenhagen K (DK)
Appl. No. 17/920,187
Filed by 3SHAPE A/S, Copenhagen K (DK)
PCT Filed Apr. 22, 2021, PCT No. PCT/EP2021/060521
§ 371(c)(1), (2) Date Oct. 20, 2022,
PCT Pub. No. WO2021/214212, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 202070247 (DK), filed on Apr. 22, 2020; and application No. 202070583 (DK), filed on Sep. 8, 2020.
Prior Publication US 2023/0162457 A1, May 25, 2023
Int. Cl. G06T 19/20 (2011.01); A61C 13/34 (2006.01); G06T 17/00 (2006.01)
CPC G06T 19/20 (2013.01) [A61C 13/34 (2013.01); G06T 17/00 (2013.01); G06T 2219/004 (2013.01); G06T 2219/2004 (2013.01); G06T 2219/2021 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A computer-implemented method of evaluating a dental preparation surface comprising:
obtaining a digital oral situation and/or a portion thereof, comprising a digital preparation surface;
using software trained to detect the digital preparation surface by segmenting the digital oral situation to identify teeth appropriate for the digital preparation surface based on a shape of the teeth, wherein the digital preparation surface is configured to receive a digital dental prosthesis;
evaluating at least one attainable thickness, wherein the attainable thickness is configured as a distance between the digital preparation surface and a surrounding, the surrounding comprising a part of the digital oral situation that is not part of the digital preparation surface; and
comparing the at least one attainable thickness to at least one minimum thickness as required by a dental restoration.