In vitro color stability of provisional restorative materials.
Artículo
en Inglés
| IMSEAR
| ID: sea-142928
ABSTRACT
Background:
Discoloration of provisional restorations can result in esthetic problems which are critically important in, for example, anterior areas and may compromise the acceptability of the restoration.Aims:
The purpose of this study was to investigate the effect of tea on provisional restorative materials. Setting andDesign:
This study was designed to measure the degree of color change of three acrylic resin provisional materials, before and after immersion in artificial saliva and artificial saliva-tea solution for 2 and 4 weeks. Materials andMethods:
Three types of acrylic provisional materials (duralay, tempron, acropars TRP), were studied. Twenty disks (20±0.1 mm by 2±0.05 mm) were fabricated from each material. Specimens were polished with acrylic bur using pumice and diamond polishing paste. Base line color was measured using a spectrophotometer. Ten disks were stored in artificial saliva and 10 were stored in a solution of artificial saliva and tea at room temperature. Color measurements were made after 2 and 4 weeks of immersion. Statistical analysis used Differences in color changes were compared by two way ANOVA, across the six groups, followed by a Turkey-Kramer's multiple comparison test.Results:
For specimens immersed in artificial saliva, the color change of methyl methacrylate materials; duralay (ΔE=4.94) and tempron (ΔE=6.54), was significantly more than butyl methacrylate material; acropars (ΔE=4.10). After immersion in an artificial saliva- tea solution, tempron exhibited less color change (ΔE=8.50) compared to duralay (ΔE=10.93) and acropars (ΔE=15.64).Conclusion:
Color stability of methyl methacrylate is higher than butyl methacrylates so if provisional materials are used for extended periods of time; tempron is preferred.
Texto completo:
Disponible
Índice:
IMSEAR (Asia Sudoriental)
Asunto principal:
Espectrofotometría
/
Bebidas
/
Ensayo de Materiales
/
Humanos
/
Diseño de Dentadura
/
Coloración de Prótesis
/
Color
/
Colorimetría
/
Alisadura de la Restauración Dental
/
Materiales Dentales
Idioma:
Inglés
Año:
2012
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS