3D printing has gone from a curiosity in dental laboratories to a daily production tool. The combination of fast LCD printers, biocompatible resins and digital scanning means a small lab can now produce dozens of models, splints and surgical guides in an overnight run.
This article covers the main applications of 3D printing in dentistry today, the materials each application needs, the printer technologies in use, and the workflow that keeps print queues efficient.
This is the highest volume application. Models for crown and bridge work, orthodontic models for aligner thermoforming, and study models for case planning. Print resolution of 50 to 100 microns is typical. Surface quality is what defines a good model resin.
Implant surgical guides require Class IIa biocompatible resin and tight dimensional accuracy. The guide must fit on the dental arch and direct the drill within fractions of a millimetre. This is where the printer's calibration matters most.
Bruxism and orthodontic splints are now printed directly from CAD with biocompatible flexible resins, removing the thermoforming step entirely. The fit is better and the production is one continuous workflow.
Tray printing turns a 30-minute manual job into an unattended overnight print, with the bonus that the tray fits the patient's anatomy perfectly because it is generated from the digital scan.
Printable denture bases and printable teeth materials are mature enough to handle most cases, especially try-ins. Specialised denture resins offer the colour stability and bond strength a finished appliance needs.
Temporaries up to long-span bridges are printed in biocompatible PMMA-loaded resins, often with built-in colour gradients. They serve as immediate restorations while the definitive milled or pressed restoration is in production.
For labs producing clear aligners in-house, the moulds are printed and then thermoformed. A modern printer can produce a full set of aligner stages overnight.
| Technology | Speed | Surface | Typical use |
|---|---|---|---|
| MSLA / LCD | Fast (full layer at once) | Excellent | Models, splints, surgical guides |
| DLP | Very fast | Excellent | Full-arch dentures, professional volume |
| SLA | Medium | Excellent | Established labs, fine detail |
| FDM | Medium | Lower | Tooling, prototypes (not patient-contact) |
For a dental lab, MSLA / LCD and DLP cover 95% of the use cases at a price-performance ratio that no other technology can match.
A dental 3D printer is only as good as the resin in it. The categories you will encounter:
Always check the resin's regulatory classification in your country. The CE mark or FDA clearance is not optional when the product touches a patient.
A clean print workflow has six stages:
The friction here is usually between stages 2 and 3: people download STL files manually, rename them, lose track. A platform that integrates with your scanner and your printer keeps the chain tight.
DoYourLab integrates with Formlabs, Carbon3D and other leading printers so you send print jobs from the case itself. No more manual STL handling. See plans
3D printing does not replace milling, it complements it. Milling still owns:
Printing owns the rest: models, splints, guides, dentures, temporaries. A modern dental lab runs both technologies side by side, with a digital case management platform routing each component to the right machine.
Working models, study models, surgical guides, splints, custom trays, partial dentures, temporaries and aligner moulds. Permanent crowns and bridges are usually milled, although ceramic-loaded resins are starting to bridge that gap.
MSLA / LCD and DLP dominate dental laboratories because of their precision, surface quality and short print times. SLA is still common in established workflows.
Yes, for any product that touches the patient. Use only resins certified Class I or Class IIa under your local regulation.