Related Experiment Video
Updated: Sep 14, 2025
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Color Stability of Different CAD/CAM Complete Denture Resins
Purpose:
To evaluate the color stability of resins for complete dentures produced with different technologies after immersion in a coffee solution.
Materials And Methods:
A total of 50 square-shaped specimens were prepared from different resins for complete dentures (n = 10): Probase Hot (PH; Ivoclar), IvoBase CAD (IBC; Ivoclar), Ivotion Dent white (ID, Shade A2; Ivoclar), dima Print Denture Base (DPDB; Kulzer), and dima Print Denture Teeth (DPDT; Shade A2, Kulzer). One side of each specimen was polished according to the manufacturer's instructions (POL), while the other side was left unpolished (UNPOL; T0). The specimens were immersed in a coffee solution at 37°C for 28 days (T28). During the storage period, the staining solution was replaced every 24 hours. The CIELab color differences (ΔEab) between the different time intervals were evaluated using a live-video comparative spot digital colorimeter (SmartVision). Data were collected and statistically analyzed (P < .05).
Results:
The highest color stability was recorded for IBC UNPOL (∆E = 0.32; P < .05). All specimens scored an acceptable ∆E, except for DPDT UNPOL (∆E = 4.56), which scored significantly lower compared to all the other specimens (P > .05).
Conclusions:
Milled and 3D-printed resins for complete dentures demonstrated comparable color stability to traditionally fabricated materials. Polishing influenced the color stability only in the 3D-printed white resin, for which the unpolished group reached a clinically unacceptable level of color change after staining.
