Patent ID: 11918438
Assignee: 3SHAPE A/S
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A method for determining gingival recession of a patient's set of teeth, wherein the method comprises:
obtaining a first digital 3D representation comprising data of anterior teeth at a first point in time;
obtaining a second digital 3D representation comprising data for the anterior teeth at a second point in time;
identifying gingiva in the first digital 3D representation and in the second digital 3D representation;
segmenting the anterior teeth in the first digital 3D representation and in the second digital 3D representation;
aligning the segmented anterior teeth of the first digital 3D representation with the segmented anterior teeth of the second digital 3D representation on a tooth by tooth basis;
determining a first gingival margin line between the segmented anterior teeth and the gingiva of the first digital 3D representation, and determining a second gingival margin line between the segmented anterior teeth and the gingiva of the second digital 3D representation;
comparing a distance between the first gingival margin line and the second gingival margin line; and
quantifying the gingival recession based on the comparison.