| Popis: |
espanolObjetivo: Comparar el cambio cromatico en resina polimerizada CAD-CAM y resina empaquetada convencional al ser expuestas a bebidas carbonatadas con colorantes. Metodologia: Estudio experimental in vitro, realizado en 32 losetas de resinas, dividido en cuatro grupos. Grupo A con 8 muestras de resina polimerizada CAD-CAM, grupo B con 8 losetas de resina compacta nanohibrida, grupo control C con 8 losetas de resina polimerizada CAD-CAM y grupo control D con 8 resina de resina compacta, cada una con un diametro de 14x14mm y 1,2mm de espesor. (1). Seleccionadas por un muestreo probabilistico no conveniente, con dos medias independientes, separadas. Las muestras fueron previamente pulidas de acuerdo al protocolo ya establecido y posteriormente incubadas a 36,5 grados centigrados por un mes .(2) Cada muestra perteneciente al grupo A y al grupo B fueron expuestas a bebida carbonatada con colorante y las muestras del grupo control fueron expuestas a suero fisiologico , las sustancias se cambiaron cada dos dias para evitar contami-nacion. Mediante el espectrofotometro Vita Easy Shine se realizaron dos medidas de color: una inicial realizada antes de exponer las muestras a diferentes sustancias y una toma de color final despues de un mes de la exposicion. Resultados: Todas las muestras presentaron cambio cromatico significativo p= EnglishObjective: To compare the chromatic change in CAD-CAM polymerized resin and conventional packed resin when ex-posed to carbonated beverages with colorants. Methodology: Methodology: Experimental in vitro study, carried out on 32 resin tiles, divided into four groups. Group A with 8 samples of CAD-CAM polymerized resin, group B with 8 nanohybrid compact resin tiles, control group C with 8 CAD-CAM polymerized resin tiles and control group D with 8 compact resin, each with a diameter 14x14mm and 1.2mm thick. (1) Selected by non-probability sampling, with two separate independent means. The samples were previously polished according to the established protocol and subsequently incubated at 36.5 Celsius degree for one month. (2) Each sample belonging to group A and group B was exposed to a carbonated drink with dye and the samples from the control group were exposed to physiological serum. The substances were changed every two days to avoid contamination. Using the Vita Easy Shine spectrophotometer, two color measurements were made: an initial one carried out before exposing the samples to different substances and a final color taking after one month of exposure. Results: All samples presented significant chromatic change p = |
