US 12,440,308 B2
Restoring a 3D digital defective tooth model
Adrian Bercovici, Darmstadt (DE); and Iurie Chiosa, Darmstadt (DE)
Assigned to EXOCAD GMBH, Darmstadt (DE)
Filed by EXOCAD GMBH, Darmstadt (DE)
Filed on Feb. 10, 2022, as Appl. No. 17/668,986.
Prior Publication US 2023/0248473 A1, Aug. 10, 2023
Int. Cl. A61C 7/00 (2006.01); A61C 13/00 (2006.01); B33Y 10/00 (2015.01); B33Y 80/00 (2015.01)
CPC A61C 7/002 (2013.01) [A61C 13/0004 (2013.01); B33Y 10/00 (2014.12); B33Y 80/00 (2014.12); G06T 2207/30036 (2013.01)] 38 Claims
OG exemplary drawing
 
1. A computer-implemented method for restoring a 3D digital defective tooth model of a tooth of a patient, the 3D digital defective tooth model missing one or more tooth sections,
the method comprising:
receiving a 3D digital teeth model of at least a part of a dentition of a patient, the 3D digital teeth model comprising at least the 3D digital defective tooth model, the 3D digital defective tooth model resembling the tooth of the patient, the tooth of the patient being a damaged tooth missing one or more tooth sections,
generating a 3D digital supplemented tooth model of the tooth of the patient, the generating of the 3D digital supplemented tooth model comprising supplementing the 3D digital defective tooth model with one or more filling tooth sections used to fill one or more of the missing tooth sections,
at least one of the one or more filling tooth sections used to supplement the 3D digital defective tooth model being provided using a 3D digital artificial tooth model of an artificial tooth different from the tooth of the patient, the supplementing of the filling tooth sections further comprising:
providing the 3D digital artificial tooth model,
overlaying the 3D digital defective tooth model with the 3D digital artificial tooth model,
merging the 3D digital defective tooth model with the 3D digital artificial tooth model by adding at least one tooth section of the 3D digital artificial tooth model missing in the 3D digital defective tooth model as the respective at least one filling tooth section to the 3D digital defective tooth model for generating the 3D digital supplemented tooth model,
wherein the merging comprises adapting the one or more filling tooth sections of the 3D digital artificial tooth model used to supplement the 3D digital defective tooth model to fit into and fill the one or more missing tooth sections of the 3D digital defective tooth model.