Help needed for segmenting an atrophic maxilla in 3D Slicer (for 3D printing)

piero_perez
Fri, 01 Aug 2025 06:58:09 +0000
Support

I’m a dental student currently learning how to use 3D Slicer.

My father, who is an implantologist, asked me to 3D print an atrophic maxilla based on a CT scan.

I’m using the Segment Editor module. I’ve already tried applying thresholds around 300 HU and even lower, but the bone still appears incomplete or hollow, especially around the alveolar ridge and other thin cortical areas.

I’ve also tried manual painting, using smoothing, and adjusting the editable area, but I still can’t get a clean, solid segmentation suitable for 3D printing.

I’m attaching some images to show exactly what’s going wrong.

Has anyone here successfully segmented severely atrophic maxillae? I’d really appreciate any advice or workflow suggestions.

Saludos from Lima, Peru and thanks in advance!

—Piero

2 posts - 2 participants