# Make close (solid) mesh in 3D Slicer

**URL:** <https://discourse.slicer.org/t/make-close-solid-mesh-in-3d-slicer/33486>\
**Category:** Development\
**Created:** [December 21, 2023, 11:00am UTC](https://discourse.slicer.org/t/make-close-solid-mesh-in-3d-slicer/33486 "2023-12-21T11:00:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![park](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/park/32/5717_2.png) [@park](https://discourse.slicer.org/u/park)\
**Post date:** [December 21, 2023, 11:00am UTC](https://discourse.slicer.org/t/make-close-solid-mesh-in-3d-slicer/33486/1 "2023-12-21T11:00:25Z")

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Hello all,

I am working on creating an implant guide with Slicer.

The issue I’m facing is closing an open dental scan mesh, as shown in the picture.

![a](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/b/7/b719e13535c5d81ca9b9bfa974ad033352cd2539.png)

I tried using vtkfillholefilter (surface-toolbox fill holes), but as seen in the image, only some parts were filled, and the rest remained open.

 ![b](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/f/ef8d93ac41ea94bc250e330f5d2abea3339fbfd0.png)

This resulted in an error when converting the model to a segmentation node.

![c](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/1/61113992f225c04a98822793c17a960590216c0f.png)

So, my questions are as follows:

1. Is there an effective way to close the mesh? It’s okay to use a library other than VTK.

2. If closing the mesh proves challenging, is there a way to avoid errors when converting an open mesh to a segmentation node?

- I would like to perform all process in Slicer not use other program

I always receive valuable insights here.

Thank you.