the axes of crown /root of the upper incisors are very bent or crooked: Adults (no bone growth): CBCT helps deciding small expansion or expansion with orthognathic surgery, and avoid fenestrations. With CBCT it is easier to see classic expansion of the maxillary arch in growth period with mixed dentition, aligning crowns and roots to the best and easier to check results. perfect alignment of roots in the bone is only visible with CBCT perfect alignment of crowns: we cannot see root fenestration if any without CBCT The doctor can decide which option is better: for example The algorithms of the software will be able to put alerts when the roots touch the corticals and/or cross them: Option 2: the roots come out of the bone through the corticals Option 1: the roots remain in the bone between the 2 corticals The roots are in the bone with the external limits of the corticals We can see all the teeth moving in the bone stage by stage, and roots moving inside the bone or outside: fenestrations. Simulations or treatment plans are visualized stage by stage (staging) on a timeline: e.g., 23 stages upper and lower = 23 aligners upper and lower. the bones of the maxilla, the mandible and the face. With CBCT and teeth segmentation, the treatment plan integrates: Note that composite teeth, for example, are not visible on the CBCT DICOM file. It is therefore necessary to associate the STL files of the teeth with the STL files of the crowns from the intraoral scanner. The CBCT’s output is a DICOM file, it must be converted into an STL file, segmenting all: teeth, bones, maxillary and mandible teeth. It is therefore necessary to incorporate the use of a CBCT with an Intra-oral scanner, in order to see all.ĥ) Technical aspects of matching CBCT and IOS scan The maxillary and mandibular bones, and the skull. the crown - but not in its entirety (dicom file) CBCT is a 3D visualization allowing us to see the complete tooth as one whole object (roots and crown) in the bone. Panoramic radiographs and teleradiographs are a 2D world the roots of the teeth moving into the bone.Īvoid moving the roots of the teeth outside the bone and preclude fenestrations.

1) A CBCT scan is a necessary requirement: as an orthodontist, for all my treatment plans, I want to see:

Panoramic teeth example for cdr dicom