Model to Model Distance Color Map Not working

Nacole
Tue, 24 Feb 2026 13:23:27 +0000
Support

Hi there, I am hoping to get some help with an issue. My goal is calculate the post op changes after bone grafting to the alveolus in cleft patients. I am having this issue.

1. Import Pre op DICOMs–> dental segmentor –> Maxilla and Upper Teeth selected –> Merge Models –> export to VTK, STL and PLY (save all on desktop)

2. Repeat steps for post op DICOM

3. Now I have 2 VTKs that I can “register” to align the two

4. Surface registration –> Fixed Pre Op, Movable Post Op, Output Transform (create new Transform as S.Registration) –> Compute

5. Click undo, then select the output model I want to apply the transform to (fixed pre op), fort output transform the selection is none

6. Then overlayed model is displaced and I save the color map

7. Then I go to model-to-model distance

8. From here the overlayed map is not shown, only either the pre or post op model which I cannot calculate any difference between.

I followed this link for the surface registration (https://www.youtube.com/watch?v=hsZrjNsXZbs)

What am I doing wrong? Is there a way I can just upload the 2 VTK files from step 3 and go straight to model-to-model calculation?

Thanks!

4 posts - 2 participants

Read full topic