# Teeth CT and segmentation

**URL:** <https://discourse.slicer.org/t/teeth-ct-and-segmentation/21968>\
**Category:** Support\
**Tags:** segmentation, dicom, 3d-model\
**Created:** [February 14, 2022, 8:55pm UTC](https://discourse.slicer.org/t/teeth-ct-and-segmentation/21968 "2022-02-14T20:55:19Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![ManiaFG](https://avatars.discourse-cdn.com/v4/letter/m/b77776/32.png) [@ManiaFG](https://discourse.slicer.org/u/ManiaFG)\
**Post date:** [February 14, 2022, 8:55pm UTC](https://discourse.slicer.org/t/teeth-ct-and-segmentation/21968/1 "2022-02-14T20:55:19Z")

</div>

Hello. I would ask for some help with teeth segmentation in slicer.  
I have a CT of the teeth, I need to segment each tooth. Now I select a tooth, and paint it on each slice. How can i speed up selection?

---

<div class="post-metadata">

**Author:** ![PalkoD](https://avatars.discourse-cdn.com/v4/letter/p/b4bc9f/32.png) [@PalkoD](https://discourse.slicer.org/u/PalkoD)\
**Post date:** [February 15, 2022, 9:24am UTC](https://discourse.slicer.org/t/teeth-ct-and-segmentation/21968/2 "2022-02-15T09:24:31Z")

</div>

Hi!

We have prepared a few articles about this topic.  
You can read one here: [Digital three-dimensional visualization of intrabony periodontal defects for regenerative surgical treatment planning | BMC Oral Health | Full Text](https://bmcoralhealth.biomedcentral.com/articles/10.1186/s12903-020-01342-w)

You can either use the combination of level tracing on every 5th slice and fill between slices  
OR  
You can use grow from seeds by painting over the tooth and over the background in two separate segments

I hope this helps

---

<div class="post-metadata">

**Author:** ![Abdulrahman](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Abdulrahman](https://discourse.slicer.org/u/Abdulrahman)\
**Post date:** [February 16, 2022, 2:51am UTC](https://discourse.slicer.org/t/teeth-ct-and-segmentation/21968/3 "2022-02-16T02:51:08Z")

</div>

Hi,  
One way to speed this process is to use sphere brush.

Hope this may help