Related Experiment Video
Updated: Jun 26, 2025
03:02
Impact of Fabrication Techniques and Polishing Procedures on Surface Roughness of Denture Base Resins
Published on: January 17, 2025
308
Dimensional Stability and Retention Strength of Impressions to Custom Impression Trays Fabricated Using Conventional
K Sangeetha Priyadarshini1, V Vidyashree Nandini2, Russia Marimuthu2
1Department of Prosthodontics and Crown & Bridge, SRM Kattankulathur Dental College and Hospital, Chengalpattu, Tamil Nadu, India.
Summary
3D-printed impression trays demonstrate comparable dimensional stability and retention strength to conventional trays. Fused Deposition Modelling (FDM) trays showed the best performance, indicating their potential for dental applications.
Area of Science:
- Dental Materials Science
- Additive Manufacturing
- Prosthodontics
Background:
- 3D printing technology is increasingly adopted across various fields, offering potential for innovation in dental fabrication.
- Custom impression trays are crucial for accurate dental impressions; 3D-printed alternatives warrant evaluation against conventional methods.
Purpose of the Study:
- To conduct an in-vitro comparison of dimensional stability and retention strength.
- To evaluate custom impression trays fabricated using conventional methods versus additive manufacturing (3D printing).
Main Methods:
- Custom impression trays were fabricated using conventional light-cure resin and 3D printing (Digital Light Processing - DLP and Fused Deposition Modelling - FDM) with polylactic acid (PLA).
- Polyvinyl-siloxane impressions were made using these trays on a master model.
- Dimensional stability and retention strength were assessed using statistical analyses (t-test, ANOVA).
Main Results:
- Significant dimensional changes were observed in all groups compared to the master model.
- Fused Deposition Modelling (FDM) trays exhibited the least dimensional changes.
- FDM trays also demonstrated the highest retention strength, followed by DLP and light-cure trays.
Conclusions:
- 3D-printed impression trays, particularly those made with FDM, show promising results in dimensional stability and retention strength.
- These findings suggest that FDM 3D-printed trays could be a viable alternative to conventional trays in dental practice.
- Further research may explore long-term clinical performance and material optimization for 3D-printed dental impression trays.
