3D printing resin dentures (temporary or longer-term restorations) follows a structured digital workflow. The complete process can be divided into five main stages: oral data acquisition, digital model design, print preparation, printing, and post-processing.
1. Oral Data Acquisition
Accurate digital data is the foundation of a well-fitting restoration.
Use a professional intraoral scanner to capture the patient's dental arch in 3D (target accuracy ±20 μm or better).
Alternatively, take a traditional silicone impression and digitize it with a high-precision desktop lab scanner.
High-quality scanning data significantly improves the final fit and reduces the need for chairside adjustments.
2. Digital Model Design
Import the scan data into professional dental CAD software (such as exocad DentalCAD or similar systems).
Key design parameters typically include:
Occlusal surface thickness ≥ 1.5 mm
Proximal contact gap 50–100 μm
Margin line extension 0.3–0.5 mm
The design must account for proper occlusion, emergence profile, and clinical requirements for either temporary or longer-term use.
3. Print Preparation
Resin selection Choose biocompatible dental resins certified for temporary crowns/bridges or longer-term restorations according to the clinical indication.
Printer parameter settings (typical range):
Layer thickness: 25–50 μm
Exposure time: 8–15 seconds per layer (exact values depend on the specific resin and printer)
Proper orientation, support generation, and slicing are critical for dimensional accuracy and surface quality.
4. Printing Process
Recommended equipment categories:
Industrial / laboratory-grade printers for higher volume and consistency
Chairside / clinic-grade printers for same-day production
Environmental requirements:
Temperature: 23 ± 2 °C
Relative humidity: 40–60 % RH
Maintain a stable environment to ensure consistent curing and minimal dimensional variation.
5. Post-Processing
After printing, the restoration must go through a standardized post-processing sequence:
Cleaning with isopropyl alcohol (IPA) for 5–10 minutes to remove residual uncured resin.
Secondary curing under 395–405 nm UV light (intensity ≥ 20 mW/cm²) for 15–20 minutes.
Manual finishing and polishing (using appropriate dental polishing systems) to achieve smooth surfaces and proper margins.
Important Notes and Quality Control
Only use biocompatible resins that comply with ISO 10993-1 (or equivalent medical standards).
Perform final clinical checks: occlusal verification and marginal fit inspection (ideally under 40× magnification).
When required by local regulations or clinical protocol, sterilize the finished product (e.g., autoclave at 134 °C / 2.2 bar for 5 minutes) before clinical use.
Summary
When each stage is executed correctly-accurate scanning, precise design, proper material and parameter selection, controlled printing, and thorough post-processing-3D-printed resin dentures can achieve excellent fit, good aesthetics, and reliable clinical performance, often with significantly shorter turnaround times than traditional methods.
Aident Technology: Complete Digital Workflow for Resin Denture Production
Aident provides professional tools designed for both laboratory and chairside production of high-quality resin restorations:
AI-30 Intraoral Scanner - Fast, powder-free scanning with high accuracy for reliable digital impressions.
Ai-C60 - Compact chairside dental 3D printer (±0.03 mm accuracy) ideal for same-day temporary crowns and small restorations.
Ai220 - Larger laboratory printer for efficient batch production of models and restorations.
Specialized biocompatible dental resins formulated for temporary crowns/bridges, models, and related applications, with excellent accuracy and clinical performance.
These solutions support a seamless scan–design–print–post-process workflow that helps clinics and laboratories deliver better-fitting resin dentures with higher efficiency.
Ready to start or optimize your 3D-printed resin denture production? Explore Aident's dental 3D printers, scanners, and resins at https://www.aident3d.com/dental-3d-printer/ or contact us for technical guidance and a live demonstration.
Aident 3D – Making digital dentistry simpler, faster, and more precise.
