Examinando por Materia "Soluciones pigmentantes"

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Acceso abierto
Chromatic stability in polished and unpolished nano-hybrid resins from 2 different brands, immersed in pigment solutions
(Universidad Privada Norbert Wiener, 2024-06-14) Castillo Tasayco, José Luis; Llerena Meza De Pastor, Verónica
The objective of this study was to determine the chromatic stability in nano-hybrid resins with and without polishing from two different brands, immersed in pigmenting solutions. The methodology used was inductive, with a quantitative, experimental, longitudinal, and prospective approach. Two pigmented beverages were used: a carbonated beverage and purple corn drink. A total of 80 resin discs were used, divided into 10 discs of each brand, with polishing and without polishing (3M Z350 XT and Tetric N-Ceram). These resin discs, with a diameter of 10mm and a thickness of 2mm, were immersed for 10 days in containers with the carbonated beverage and purple corn drink. The Sof-Lex disc system (3M) was used for polishing the resin discs. All measurements were taken using a Chromascop colorimeter, and the data collection instrument was validated by experts. The results showed that polished resin discs of the 3M Z350 XT and Tetric N-Ceram brands, immersed in carbonated beverage, underwent a color change of 2 shades, while non-polished resin discs of the same brands experienced a color change of 5 shades. This study concluded that the chromatic stability of both 3M Z350 XT and Tetric N-Ceram resins, whether polished or not, changes when exposed to pigmented beverages. It was also concluded that polishing the 3M Z350 XT and Tetric N-Ceram resins is a crucial factor in maintaining better chromatic stability.
Acceso abierto
Effect of three pigment solutions on the stability chromatic in stock artificial teeth for prosthetics. In Vitro Lima 2021
(Universidad Privada Norbert Wiener, 2022-12-07) Mamani Mamani, Tania Johana; Llerena Meza De Pastor, Verónica
Objective: To determine the effect of three pigmenting solutions on the color stability of stock acrylic teeth for prostheses in vitro. Methodology: The research was experimental, using 80 Olympic acrylic teeth, divided into four experimental groups of 20 teeth each, with each group exposed to one of the pigmenting substances: coffee, carbonated beverage, red wine, and distilled water (the control group). The statistical test used was ANOVA to assess differences between groups, and for multiple comparisons, the Tukey and Duncan tests were applied with an error margin of 0.05. Results: Coffee was the pigmenting solution that caused the most significant chromatic variation in Olympic acrylic teeth, with an average variation of 3.56, followed by red wine with an average variation of 2.12, carbonated beverage with 2.06, and distilled water with an average variation of 1.50. Conclusion: Coffee was the pigmenting solution that caused the most significant chromatic variation in Olympic acrylic teeth, followed by red wine, and finally, the carbonated beverage.