Method 1 - Simple Registration
Method 2 - IRT (Individual Reference Tray)
A first one, where the patient’s teeth gets scanned with an intraoral scan, is followed by the design and print/milling of a Individual Reference Tray, as described in this Open Access paper.
In the following video MeshMixer (a free CAD software you can download from here) is used to design the IRT.
This is the slowest method, but also the most accurate, as less superimpositions must be performed in the CAD software, since the position of the (intra-oral) teeth is known in respect to the IRT scanned with ObiScanner.
Method 3 - SRT (Standard Reference Tray)
- Take an intra-oral scan.
- Take a second intra-oral scan (or just re-scan the central part) while the patient has the U-shaped part of the SRT between his/her teeth (use an impression material to stabilize it)
- Take a face scan
- Take a face scan of the patient with the SRT assembled (U-shaped and rectangular-shaped parts).
- Superimpose the 3D models by following this video steps.