Measure ridges, place virtual implants, compare scans with heatmaps, cross-section models. All free, in your browser.
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Built for the real dental workflow — not a generic viewer with a dental label. Every tool solves a specific clinical problem.
Click any two points on the model for exact distance in millimeters. Measure angles between 3 points to verify abutment convergence and implant angulation.
Slice the model on any plane (X, Y, Z) with an interactive slider. Visualize the alveolar ridge, measure bone thickness, and evaluate bone availability before planning.
Place real implant cylinders (Nobel Biocare, Straumann BLT, Zimmer Biomet, MegaGen AnyRidge) directly on the scan. 8 sizes per system with exact clinical dimensions.
Load two STLs and see differences as a color-coded heatmap. Blue = no change, red = significant deviation. Perfect for verifying scan accuracy or manufacturing tolerance.
STL (binary and ASCII), OBJ, and PLY. Compatible with output from 3Shape TRIOS, Medit i700, iTero Element, Planmeca Emerald, Primescan, and all major intraoral scanners.
Load upper and lower arches simultaneously to verify occlusion. Toggle visibility, transparency, and color per file. Manage everything from the side panel.
Add text notes directly on the 3D model — mark preparations, identify issues, flag reference points. Annotations are included in exported screenshots.
Everything processed in your browser via WebGL. Zero files uploaded to servers. Zero data stored or transmitted. Zero tracking cookies. Your file never leaves your device.
No installation. No account. No file upload. Just drag and work.
Drag any STL, OBJ, or PLY file from your desktop. Supports files up to 200MB from any intraoral scanner or CAD software.
The model renders instantly in 3D. Use measurement tools, cross-sections, virtual implants, and annotations for your clinical evaluation.
Take screenshots that include all your measurements and annotations. Share them with colleagues or patients directly from your browser.
No matter your role — if you work with dental STL files, this viewer saves you time.
Verify alveolar ridge with cross-section before planning. Place virtual implants to visualize the case. Measure inter-implant distances and insertion angles. All without opening Meshmixer or Blue Sky Plan.
Review incoming scans before starting CAD design. Identify scan artifacts, verify prep margins, compare prior scans. Heatmap comparison catches deformations invisible to the eye.
Load upper and lower arches to verify digital occlusion. Annotate contact points, mark occlusal adjustment zones. Share annotated screenshots with the lab for precise communication.
Present real clinical cases in lectures or classes without expensive software. Measure and annotate in real-time in front of the audience. Export professional-quality screenshots for publications or teaching materials.
We tested every free viewer available. None offer dental-specific tools. Until now.
| Feature | TrazaLab | ViewSTL | 3DViewer | Autodesk |
|---|---|---|---|---|
| WebGL 3D rendering | ✓ | ✓ | ✓ | ✓ |
| Point-to-point measurement (mm) | ✓ | ✗ | Basic | ✓ |
| Angle measurement | ✓ | ✗ | ✗ | ✓ |
| Interactive cross-section | ✓ | ✗ | ✗ | ✓ |
| Multi-file loading | ✓ | ✗ | ✓ | ✓ |
| Dental measurement presets | ✓ | ✗ | ✗ | ✗ |
| Virtual implants (5 brands) | ✓ | ✗ | ✗ | ✗ |
| Deviation heatmap | ✓ | ✗ | ✗ | ✗ |
| On-model annotations | ✓ | ✗ | ✗ | ✓ |
| No account required | ✓ | ✓ | ✓ | ✗ |
| 100% browser-based (no upload) | ✓ | ✓ | ✓ | ✗ |
| Bilingual EN/ES | ✓ | ✗ | ✗ | ✗ |
Generic STL viewers — ViewSTL, 3DViewer.net, Online 3D Viewer — treat 3D files as abstract geometry. An intraoral scan isn't an abstract model. It's a patient. It's a treatment plan. It's a clinical decision that needs clinical tools.
A surgeon receives a TRIOS scan of an implant case. They need to verify ridge height, measure mesio-distal space, and visualize whether a 4.1mm implant fits. With a generic viewer, they can only rotate the model and zoom. No measurements. No cross-section. No implant size reference. They end up opening Meshmixer — a 3D modeling tool designed for artists, not clinicians.
This viewer was built by a team that works with dental labs every day. Every tool solves a real problem in the clinical workflow:
Every byte of your file is processed exclusively in your browser via WebGL and JavaScript. Nothing is transmitted to any server. No upload, no storage, no logs, no tracking cookies. This isn't a privacy policy — it's an architectural reality. The server literally cannot see your file because it never receives it.
For US clinics subject to HIPAA, this eliminates the PHI exposure risk associated with cloud-based viewers. For EU labs, it complies with GDPR by default. For any dental professional anywhere — it means you can use this with real patient files without worry.
We've tested files from 3Shape TRIOS 3, TRIOS 4 and TRIOS 5, Medit i500 and i700, iTero Element 5D, Planmeca Emerald and Emerald S, Dentsply Sirona Primescan, Carestream CS 3600 and 3800, and Shining 3D Aoralscan 3. All STL and PLY formats these scanners produce work correctly in our viewer.
If you need to manage these files professionally with complete traceability, versioning, and integrated lab-clinic communication, explore the TrazaLab clinical file platform. And to repair damaged STL files, use our free STL repair tool. Discover all our free tools for dental labs.
STL, DICOM, photos, digital prescriptions — all in one secure platform with complete traceability and integrated communication.