Meshroom (AliceVision)
Context
Meshroom, built on top of the AliceVision photogrammetry framework, is an open-source tool for turning photos into 3D models. While it wasn’t designed specifically for dentistry, research groups and some dental schools use it to reconstruct oral surfaces from sets of intraoral or lab photographs. Compared with CBCT or laser scans, photogrammetry is cheaper and more accessible — a regular camera can be enough. For IT staff, the interest is in providing labs with a GPU-capable workstation where Meshroom can run, letting students or researchers experiment with low-cost 3D reconstruction pipelines.
Technical Snapshot
| Area | Typical with Meshroom (AliceVision) |
| Platform | Windows, Linux; GPU recommended (CUDA support) |
| Focus | Photogrammetry-based 3D reconstruction |
| Dental use | Surface reconstruction of teeth, models, impressions |
| Features | Node-based workflow, mesh generation, texturing |
| Integration | Imports images; exports meshes (OBJ, PLY, STL) for CAD/3D printing |
| Security | OS-level controls; no clinical compliance built-in |
| Licensing | Open-source (MPL) |
| Scale | Single workstation, teaching labs, research groups |
Scenarios
– Teaching exercise. Students photograph dental models and rebuild them into 3D meshes for inspection or printing.
– Research project. A team compares photogrammetry-based meshes with CBCT scans for accuracy in prosthetic design.
– Low-cost pilot. A dental outreach project uses Meshroom with consumer cameras to build digital records without high-end scanners.
Workflow (admin view)
1. Install Meshroom and ensure AliceVision dependencies are present.
2. Prepare a workstation with NVIDIA GPU for CUDA acceleration.
3. Import photo sets of dental models or impressions.
4. Run reconstruction pipeline (feature extraction → depth maps → mesh).
5. Export resulting models in STL/OBJ for CAD or 3D printing.
6. Maintain workstation drivers and verify compatibility after updates.
Strengths / Weak Points
Strengths
– Free and open-source photogrammetry platform.
– Produces usable 3D meshes from ordinary photographs.
– Fits well in teaching or research environments with limited budgets.
– Exports standard formats usable in CAD or print workflows.
Weak Points
– Reconstruction quality depends heavily on photo set and lighting.
– Not optimized for medical or dental compliance.
– Processing is GPU-intensive and can be slow.
– Lacks specialized dental features like occlusion analysis.
Why It Matters
3D scanning in dentistry is usually tied to expensive hardware and software. Meshroom with AliceVision offers a different route: photogrammetry that can be tried with nothing more than a camera and a strong workstation. For universities and outreach projects, this makes experimentation affordable, even if results don’t always match clinical-grade scanners. It’s not a replacement for CBCT, but as a teaching and research tool, it broadens what students and labs can explore.
