Related Experiment Video
Updated: Aug 28, 2026
Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry
Published on: June 6, 2025
Chromatic Stability of Three Photopolymerizable Resins for Additive Manufacturing Following Immersion in Artificial
Adina-Bianca Bulai1, Alexia-Ecaterina Cârstea2, Lucian-Toma Ciocan2
1Faculty of Medical Engineering, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu Street, District 1, 011061 Bucharest, Romania.
Objective:
This study compared the color stability of three photopolymerizable resins (Anycubic Bio Resin White, V-Print c&b temp, GC Temp Print) after immersion in artificial saliva at 37 °C.
Materials And Methods:
Thirty-six disc specimens (10 mm × 1.5 mm) were printed on a Planmeca Creo C5 LCD printer and divided into control (T0), 24 h (T24), and 72 h (T72) groups (n = 4). CIELAB coordinates were measured spectrophotometrically, and ΔE was calculated using the CIE76 formula.
Results:
Material was the dominant factor for all color parameters (η2p = 0.774-0.964, all p < 0.001), while immersion time was not significant (all p > 0.05). Mean ΔE at T24/T72 was 0.90/0.66 (Anycubic), 2.25/3.79 (VOCO), and 4.48/3.58 (GC). The Kruskal-Wallis test detected an overall difference among materials at T72 (H(2) = 7.423, p = 0.024); however, no pairwise comparison remained significant after Bonferroni correction. At T24, one of four Anycubic specimens exceeded the perceptibility threshold (ΔE = 1.2), whereas 75% of GC Temp Print specimens exceeded the clinical acceptability threshold (ΔE > 3.7).
Conclusions:
Material composition was the primary determinant of chromatic behavior; resin selection remains critical for the aesthetic performance of 3D-printed provisional restorations.
