# Set the view perpendicular on each tooth

**URL:** <https://discourse.slicer.org/t/set-the-view-perpendicular-on-each-tooth/42636>\
**Category:** Support\
**Tags:** markups, dental\
**Created:** [April 20, 2025, 7:54pm UTC](https://discourse.slicer.org/t/set-the-view-perpendicular-on-each-tooth/42636 "2025-04-20T19:54:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Yasser\_Ahmad](https://avatars.discourse-cdn.com/v4/letter/y/e68b1a/32.png) [@Yasser\_Ahmad](https://discourse.slicer.org/u/Yasser_Ahmad)\
**Post date:** [April 20, 2025, 7:54pm UTC](https://discourse.slicer.org/t/set-the-view-perpendicular-on-each-tooth/42636/1 "2025-04-20T19:54:12Z")

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I have a 3D dental model which I can rotate in infinite directions and angles. But, I want to be able to set a view where I will be looking directly at the facial surface of each tooth

What I’ve tried to do is:

1. Draw a cuve (polynomial worked well to draw a 2D curve on the occlusal plane)  

2. Put a plane vertically to intersect that curve at the center of each tooth, hopefully close to 90 degrees  

3. Rotate the screen or model until the plane becomes a line so that I’m sure I’m looking directly perpendicular on the tooth  

what I am looking for is a simple way to set the view perpendicular on each tooth to evaluate its axis on two models superimposed

And I want to follow this method showed here but in 3D Slicer

 ![Perpendicular lines to arch curve](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/c/3c0811bd496fe3cd198a3c049eb5f7cf670c4741.jpeg)

Thank you in advance

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**Author:** ![chir.set](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chir.set/32/66982_2.png) [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Post date:** [April 21, 2025, 12:56pm UTC](https://discourse.slicer.org/t/set-the-view-perpendicular-on-each-tooth/42636/2 "2025-04-21T12:56:23Z")

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May be `Cross section analysis` module in `SlicerVMTK` extension could help you. I broadly understand that you might be looking for reslicing along a markups curve.