MINI 2 (Dental casts for Grillz): Interproximal gap “bridging” artifact

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1

Hi everyone,

I’m scanning dental stone casts for Grillz using a Revopoint MINI 2 and Revo Scan 5 (latest update), and I’m getting a consistent artifact in narrow interproximal gaps (see in pics)

Issue:
There is a real physical gap between two teeth on the cast I made (see in pic) but after processing (Fusion), Revo Scan 5 partially “bridges” the gap with a thin strip/film of mesh, as if it’s filling the space.

Setup / workflow:
MINI 2 in Geometry mode (color OFF)
Light, even coat of 3D scanning spray
Scanning distance kept within the “excellent” range
Workflow: Fusion → Isolation (15%) → Overlap detection (0.10 mm vertical) → Mesh Edit
Avoiding heavy smoothing (I need maximum accuracy for fit when working with teeth)

Questions:

  1. Is interproximal “bridging” a known limitation of structured light scanning in deep/narrow gaps, or is there a setting/workflow to reduce it? Maybe I am scanning wrong ?

  2. Any recommended settings for dental cast scanning to preserve small gaps/undercuts?

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246831920×3404 2.07 MB

I have highlighted in red where the artificial gap is (not 100 processed yet) I am wondering if I should remove it in blender? But that might destroy scan of the tooth which has to be as accurate as possible

I am really new to this, have been searching the web and watching plenty of tutorials but really seen nothing on scanning teeth.

Super grateful for any help :blush:

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Here is the original stone I made that I used to scan with the mini 2

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3

Hi @Mclaindogg

Regarding the scanning issues you encountered, the gaps are likely closing because those areas were not fully captured, causing the open meshes to merge during the automated process. To resolve this, I recommend avoiding the “auto-close holes” feature while meshing; it is better to leave those areas open and perform any necessary closing manually.

For the most accurate results, please ensure you scan the spaces between the teeth as thoroughly as possible. When processing the data, use the high-quality fusing settings while ensuring the option to close holes remains disabled. Ultimately, it is best to leave the scan open and perform the final refinements within a 3D editing software.

Please let me know if you have any further questions while working through the next scan.

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