Examinando por Materia "Estabilidad de color"

Mostrando 1 - 3 de 3

Acceso abierto
Effect of glycerinon color stability in a nano-filled resin exposed to drinks carbonated, Lima 2022
(Universidad Privada Norbert Wiener, 2023-11-05) Alberca Estela, Cintya Margarita; Guevara Sotomayor, Juan César
The objective of this study was to determine the color stability of a nanofilled resin with and without glycerin exposure to carbonated beverages. Methodology: Three carbonated beverages (Coca Cola®, Inka Cola®, and Red Bull®) were used as liquid pigments against the nanofilled resin (Filtek Z350 XT), which was previously molded into discs measuring 10 x 2 mm. These discs were divided into two groups: one group had glycerin gel applied to its surface before the final photopolymerization, while the other group did not. The initial color of the discs was identified using the Vita classical color guide through visual method. Once the colors were identified, the discs were placed in separate groups and each group was submerged in a container with a different carbonated beverage. The resin discs remained in the containers for a period of 14 days, being removed only at 7 and 14 days to verify the color. This information was tabulated and processed using ANOVA statistical analysis. Results: The Z350 XT resin, with and without glycerin, exposed to Coca Cola®, Inka Cola®, and Red Bull® for 14 days showed no significant color variation (p > 0.05). Conclusion: The color stability of nanofilled resin with and without glycerin exposed to carbonated beverages was similar.
Acceso abierto
Effect of pigmenting beverages on the color stability of composite resins. In vitro study. Lima - Peru. 2021
(Universidad Privada Norbert Wiener, 2021-10-26) Huarcaya Cahuana, Marialejandra; Huamani Caquiamarca, Yuliana Esther
The aim of this research was to determine the effect of pigmented beverages on the color stability of composite resins. Three pigmented beverages (Coca-Cola, red wine, and Red Bull) were used to induce color variation in resins, which were previously molded into discs with a 10mm diameter and 2mm thickness. The initial color of the discs was identified using a visual method and a Vita Classical colorimeter, which has a numerical scale to assess each color tone, ranging from 1 to 16, representing the color scale from B1 to C4. Once the colors of each resin disc were identified, they were separated into groups, and each group was immersed in a container with a different pigmented beverage. The resin discs remained in the containers for 15 days, with the beverage being replaced every 24 hours with an identical one. After 15 days, the resin discs were removed, rinsed with plenty of water, and dried with air before their color was recorded again using the visual method. The data were tabulated and processed using ANOVA statistical analysis. The results showed that the composite resin Tetric N-Flow varied 3.3 ± 1.83 with Coca-Cola, 5 ± 0.0 with Red Bull, and 10.7 ± 2.5 with red wine. The composite resin Tetric N-Ceram varied 0.7 ± 1.83 with Coca-Cola, 1.4 ± 0.84 with Red Bull, and 10.4 ± 2.8 with red wine. Finally, the composite resin Filtek Bulk Fill varied 1.0 ± 0.0 with Coca-Cola, 0.7 ± 0.48 with Red Bull, and 7.8 ± 3.22 with red wine. It was concluded that red wine caused the greatest color variation compared to the other pigmented beverages.
Acceso abierto
In vitro study on the color stability of two dental resins (Omnichroma Y Z350XT) against three pigmenting beverages (coffee, coca cola and chicha morada) most consumed by the population of Lima. Lima Peru. 2021
(Universidad Privada Norbert Wiener, 2022-05-06) Baños Chaparro, Mirka Fiorella; Vergara Pinto, Brenda Roxana
The aim of this study was to compare the color stability of two dental resins exposed to three commonly consumed staining beverages in the population of Lima. Two resins were used for aesthetic zone restorations (Omnichroma and Z350XT), and three staining beverages (coffee, Coca-Cola, and purple corn drink). The resins were formed into discs with a diameter of 10 mm and a thickness of 2 mm, using a mold where increments of 2 mm of resin were added until the required disc dimensions were achieved. Once the resin discs were made, the initial color was checked using the Vita classical color guide, and this information was recorded on the data collection sheet. In total, 30 discs of each resin type were made, with 10 discs for each beverage studied, for a total of 60 discs. The beverages were then prepared in separate jars, with 40 ml of each substance poured into a different jar. The resin discs were submerged in the beverages for 15 days, with the beverage being replaced after 7 days with the same substance. After 15 days, the discs were removed, rinsed, and dried, and the color was measured again, with the data recorded on the data sheet.