Patent ID: 11903779
Assignee: 3SHAPE A/S
Field: Medical technology (Instruments)
Classification: CPC A  B  G | IPC A  B  G

Claim 5:
6. A method for manufacturing a physical dental preparation guide configured for validating preparation of at least one prepared tooth for a dental restoration, the method comprising:
creating a virtual dental preparation guide;
manufacturing the physical dental preparation guide based on the virtual dental preparation guide;
wherein creating the virtual dental preparation guide comprises:
a: obtaining a digital 3D representation of a pre-prepared set of teeth;
b: virtually removing said at least one tooth from the digital 3D representation of the pre-prepared set of teeth, such that a digital 3D representation of a remaining set of teeth is formed;
c: obtaining a virtual target dental restoration expressing a target shape of the dental restoration;
d: creating a virtual validation surface for the virtual dental preparation guide based on the virtual target dental restoration;
e: creating a virtual preparation guide surface by combining the virtual validation surface and at least part of the surface of the digital 3D representation of the remaining set of teeth; and
f: creating the virtual preparation guide having the virtual preparation guide surface;
wherein the physical dental preparation guide to be manufactured based on the virtual dental preparation guide includes a validation surface based on the virtual preparation guide surface and wherein the validation surface is configured such that the physical dental preparation guide does not collide with the prepared tooth when the physical dental preparation guide is arranged at the prepared tooth.