Examinando por Autor "Barrionuevo Salgado, Katya Eleuteria"

Seleccione resultados tecleando las primeras letras
Mostrando 1 - 1 de 1
  • Miniatura
    ÍtemAcceso abierto
    Chromatic stability against coffee of an acrylic and bis-acrylic resin used for the manufacture of provisional crowns in fixed prosthesis. In vitro study. Lima, Peru 2022
    (Universidad Privada Norbert Wiener, 2023-11-30) Barrionuevo Salgado, Katya Eleuteria; Guevara Sotomayor, Juan César
    Objective: To determine the color stability of an acrylic and a bis-acrylic resin when exposed to coffee, used for the fabrication of provisional crowns in fixed prosthodontics. Methodology: An experimental study with a quantitative approach and applied type, using a hypothetical deductive methodology. An acrylic resin (Alike) and a bis-acrylic resin (Visalys Temp) were used to create 10 mm diameter by 2 mm thick discs. Once the discs were prepared, their initial color was checked using the Vita classical shade guide, and the information was recorded in the data collection form. A total of 11 discs of each type were made and immersed in two glass containers containing a coffee solution for a period of 1 week. The discs were only removed from the container to assess color stability at 1 hour, 24 hours, and one week after exposure. Results: The acrylic resin Alike showed a color variation of 0.45 after 1 hour of exposure to coffee, 3.82 after 24 hours, and 4.27 after 1 week. Meanwhile, the bis-acrylic resin Visalys Temp showed a color variation of 8.64 after 1 hour, 12.82 after 24 hours, and 13.91 after 1 week of exposure. Conclusion: Both resins showed color variation, with the bis-acrylic resin showing more noticeable changes in the same period of time