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The group convened that in 2014 CBCT now replaces Pan screening image for orthodontics. Cephalogram has staging power for:
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Coffee Break
3D Norms
Can't make 3D models from CBCT because of resolution: not possible to have good resolution enough to build appliances and keep the low dosage. So surface scans are necessary. Right now the surface scanners are therefore developing in parallel with CBCT.
Can we extract stuff from 3dMD and compare/overlap on CBCT. Carla Evans says it's hard to overlap on CBCT cuz there is distortion on the 3dMD. It's easy to keep the subject steady, as they are just insant flashes. They can be setup to make a 360 surface of the head, but the problem is the hair, which gets captured as surface.
At Bolton Brush, there are 3D landmark data from the study thanks to the PA+Ceph combination taken w/o moving the patient.
What raw material is available?
- cross-section CBCT age 7-40
- Longitudinal face scans
- 3D Bolton landmarks
- 2D midlines