International Journal of Prosthodontics and Restorative Dentistry

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VOLUME 11 , ISSUE 4 ( October-December, 2021 ) > List of Articles


Evaluation of the Effect of Cement Shade and Accelerated Artificial Aging on Color Stability of CAD/CAM Resin-matrix Ceramics: An In Vitro Study

Arife Dogan, Mustafa Solmazgul

Keywords : Artificial aging, CAD/CAM resin-matrix ceramics, Color stability, Resin cement

Citation Information : Dogan A, Solmazgul M. Evaluation of the Effect of Cement Shade and Accelerated Artificial Aging on Color Stability of CAD/CAM Resin-matrix Ceramics: An In Vitro Study. Int J Prosthodont Restor Dent 2021; 11 (4):159-167.

DOI: 10.5005/jp-journals-10019-1345

License: CC BY-NC 4.0

Published Online: 04-04-2022

Copyright Statement:  Copyright © 2021; The Author(s).


Aim and objective: This study was conducted to examine the effect of cementation and artificial aging on color stability of three resin-matrix ceramic CAD/CAM materials. Materials and methods: About 12 × 14 × 1.0 mm rectangular-shaped specimens were prepared from a hybrid ceramic (Vita Enamic), a hybrid resin nano-ceramic (Cerasmart), and a resin nano-ceramic (Lava Ultimate) (n = 30). Specimens of each material were luted with three shades of a resin cement in 0.2 mm thickness (Variolink N; A1, Bleach XL and Transparent), followed by artificial aging step (n = 10). Color coordinates were measured in each step with a colorimeter. Color differences (ΔE00) were calculated from CIEDE2000 formula, and statistically analyzed with one-way ANOVA and paired t-tests. Results: For each material type, Bleach XL shade luting yielded the highest color change when compared to other two shades (p < 0.05). Artificially aging the specimens resulted in a significant increase in ΔE00 regardless of shade and material type (p < 0.05). No significant color differences due to artificial aging were detected when the three shades were compared for only Vita Enamic samples (p > 0.05). Luting with different shades of resin cement did not result in a statistical difference in ΔE00 between the restorative materials (p < 0.05) except for Cerasmart luted with Bleach XL (p < 0.05); however, artificial aging led to statistically significant differences between the materials when luted with the same shade of the resin cement (p < 0.05). Conclusion: The final color of resin-matrix ceramics is affected by the resin cement shade and artificial aging.

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