Examinando por Materia "Agentes pigmentantes"

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Chromatic stability of Palfique lx5 and Filtek z350 composite resins against chicha morada, green tea and Cocacola, in vitro comparative study. Lima 2018
(Universidad Privada Norbert Wiener, 2021-10-23) Misajel Aquino, Carlos Darwin; Girano Castaños, Jorge Alberto
The purpose of this study was to evaluate the color stability of two composite resins exposed to different staining agents. A total of 56 composite resin samples were prepared, with 28 samples of Filtek Z350 and 28 of Palfique LX5. Each resin group was divided into subgroups of 8 samples for each staining substance: chicha, Coca-Cola, and tea, and 4 samples for the control group. Color stability was analyzed using Photoshop software, providing mean values on a grayscale. Data were analyzed using ANOVA and Student's t-test for hypothesis testing of differences. Results: The control group had the highest mean value (144.23±1.67) within the Filtek Z350 resin group, showing a significant difference compared to the staining agent groups (p<0.05). In the Palfique LX5 resin group, the control group and Coca-Cola showed the highest values, significantly differing from the tea (p<0.05) and chicha (p<0.05) groups. Significant differences were found between both resin groups within each staining agent and control group (p<0.05). Conclusion: The effect of pigments on color stability was lower in the control group for Filtek Z350 resin. However, for Palfique LX5 resin, the greatest color effects were observed in the control and Coca-Cola groups, followed by tea, with chicha showing the lowest value.