US 12,450,840 B2
Checking a physical dental element using motion tracking
Maik Gerth, Seeheim-Jugenheim (DE); and Paul Schnitzspan, Seeheim-Jugenheim (DE)
Assigned to EXOCAD GMBH, Darmstadt (DE)
Filed by EXOCAD GMBH, Darmstadt (DE)
Filed on Mar. 8, 2023, as Appl. No. 18/119,068.
Prior Publication US 2024/0303935 A1, Sep. 12, 2024
Int. Cl. G06T 19/00 (2011.01); A61C 13/34 (2006.01); G06T 7/73 (2017.01); G06T 19/20 (2011.01)
CPC G06T 19/006 (2013.01) [A61C 13/34 (2013.01); G06T 7/75 (2017.01); G06T 19/20 (2013.01); G06T 2207/30036 (2013.01); G06T 2219/2016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for checking a geometric form of a physical dental element using motion tracking and augmented reality,
the method comprising:
receiving a three-dimensional digital model comprising a three-dimensional digital dental element, the three-dimensional digital dental element defining a geometric limit for the geometric form of the physical dental element,
repeatedly:
receiving optical imaging data from an optical sensor device,
detecting structural elements within the optical imaging data, the
structural elements defining reference points for a target position for the three-dimensional digital dental element,
determining the target position for the three-dimensional digital dental element using the reference points defined by the structural elements,
controlling an electronic display device for displaying an augmented reality view on the physical dental element augmented with the three-dimensional digital dental element, at least a part of the three-dimensional digital dental element being arranged at the target position, the augmentation with the at least part of the three-dimensional digital dental element being indicative of whether the geometric form of the physical dental element complies with the geometric limit defined by the three-dimensional digital dental element arranged at the target position,
the repeatedly receiving of the optical imaging data, detecting of the structural elements, determining of the target position, and the controlling of the electronic display device for displaying the augmented reality view being performed with a repetition rate resulting in a real time impression of the motion tracking.