Related Experiment Video
Updated: Jun 17, 2026
Evaluating the Effects of Different Polishing Methods on Color Stability of Dental Restorations in Pediatric Dentistry
Published on: June 6, 2025
Composites associated with pulp-protection material: color-stability analysis after accelerated artificial aging
Diogo Rodrigues Cruvinel1, Lucas da Fonseca Roberti Garcia, Simonides Consani
1Post-graduate student, Ribeirao Preto School of Dentistry, University of São Paulo, Ribeirao Preto, SP, Brazil.
Objectives:
This study assessed the color stability of two composites associated with two pulp protectors submitted to accelerated artificial aging (AAA).
Methods:
60 test specimens were made with 0.5 mm of protection material (calcium hydroxide - CH or glass ionomer cement - GIC) and 2.5 mm of restoration material (Concept or QuixFil) and divided into 3 groups (n=10) according to the type of protection material/composite, and the control group (no protection). After polishing, color readings were obtained with a spectrophotometer (PCB 6807 Byk Gardner) before and after AAA for 384 hours, and L*, a*, and b* coordinates and total color variation (DeltaE) were analyzed (2-way ANOVA, Bonferroni, alpha=05).
Results:
Composites placed on CH presented lower L* levels than those on GIC, which presented higher L* values than the control group and lower b* values than those of the CH group. The Concept composite presented higher DeltaE levels for all groups, differing statistically from QuixFil, except when placed on GIC.
Conclusions:
It was concluded that the protection material could affect the color stability and AAA is a factor that enhances this effect, depending on the type of composite used.
