Online Dental STL Viewer
view, measure, section & edit.
Open one or more STL files — a jaw scan, planned implants, a surgical guide — in a single 3D scene. Toggle layers, dial transparency, cut a cross-section through the anatomy, measure distances in mm, move or rotate parts and export the result as STL. No installation, no account.
Why this viewer?
Load several files at once in their shared coordinate system — exactly as exported from your planning software.
Per-file visibility toggle and 10–100% transparency slider. Make the bone translucent, keep the implant solid.
WebGL rendering happens on your device. Patient-related files are never uploaded — nothing to delete afterwards.
Desktop, tablet or phone. Rotate with drag or touch, zoom with scroll or pinch.
Slide a cutting plane through the model along X, Y or Z — flip it to view either side and see implant positions inside the jaw, in true cross-section.
Tap two points on any mesh to read the straight-line distance in millimeters. BVH-accelerated picking stays fast even on large scans.
Reposition or rotate any layer with a 3D gizmo, then download it as binary STL — real-world mm scale preserved.
Reduce triangle count to 10–90% of the original for lighter files. Open edges are locked so shells don't shrink — restore the original in one click.
How to use it
- Export your meshes as .stl from your CBCT planning, intraoral scanning or CAD software.
- Drop the files above (you can select several at once).
- Use the Layers panel (top right) to toggle visibility and adjust transparency per file.
- Open the left toolbar for the section plane, mm measurement, move/rotate and simplify tools — each layer's download button exports its current state as a binary STL.
What is an STL file?
STL (stereolithography) is the standard file format for 3D surface meshes in digital dentistry. It describes an object's surface as thousands of small triangles — no color, no textures and, importantly, no embedded patient metadata. Intraoral scanners, CBCT planning software and dental CAD tools all export STL, and 3D printers consume it directly, which is why surgical guides, models and splints travel between clinic, lab and printer as .stl files.
In guided implant workflows you typically juggle several STLs per case — the arch scan, the planned implant positions and the guide itself. Viewing them together, in the same coordinate system, is how you sanity-check a design before printing. That's exactly what this tool does; and if you want to see what the accuracy literature says about guides designed this way, read our evidence review of guided vs. freehand placement.
Online viewer vs. desktop software
| This tool | Desktop software (Meshmixer, MeshLab…) | |
|---|---|---|
| Installation | None — runs in the browser | Download & install required |
| Patient-file privacy | Never uploaded, processed locally | Local (but files copied to disk) |
| Multi-STL with layers | Yes — visibility + transparency per file | Yes, more clicks |
| Mesh editing / repair | Basic: move/rotate, simplify, export (+ view-only section & measure) | Full editing & repair |
| Works on phone/tablet | Yes | No |
| Price | Free | Free |
Honest note: for mesh repair, boolean operations (union/subtract), sculpting or hollowing, desktop tools are still the right choice. But quick jobs — repositioning a part, simplifying a heavy scan, measuring a distance, exporting the result — now work right here, on any device, without moving patient data around.
Frequently asked questions
Are my STL files uploaded to a server?
Can I view multiple STL files together?
Can I edit STL files with this tool?
Which formats are supported?
Is there a size limit?
Viewing a case you'd rather not design yourself?
Upload your CBCT — an oral & maxillofacial surgeon plans the implant positions and you receive a print-ready surgical guide STL within 48 hours. Tooth-supported guides from $100.
Get a free pre-assessment