Effect of polishing and glazing on the color and spectral distribution of monolithic zirconia
The Journal of Advanced Prosthodontics
;
: 296-304, 2013.
Artículo
en Inglés
| WPRIM
| ID: wpr-77581
ABSTRACT
PURPOSE:
The aim of this study was to evaluate the effect of polishing and glazing on the color and spectral distribution of monolithic zirconia. MATERIALS ANDMETHODS:
Forty-five monolithic zirconia specimens (16.3 mm x 16.4 mm x 2.0 mm) were fabricated and divided into 5 groups according to the number of A2-coloring liquid applications (Group I to V). Each group was divided into 3 subgroups according to the method of surface treatments (n=3) N no treatment; P polishing; G glazing. Color and spectral distribution of five different areas of each specimen were measured according to CIELAB color space in the reflectance mode relative to the standard illuminant D65 on a reflection spectrophotometer. Data were analyzed using one-way ANOVA followed by Tukey's HSD test, Pearson correlation and regression analysis (alpha=.05).RESULTS:
There was a significant difference in CIE L* between Subgroup N and P, and in CIE b* between Subgroup P and G in each group. Spectral reflectance generally decreased in Subgroup P and G in comparison with Subgroup N. Color differences between Subgroup P and G were within the perceptibility threshold (DeltaE*ab0.88, P<.001).CONCLUSION:
A perceptible color difference can be detected after polishing of monolithic zirconia. Polishing decreases the lightness, and glazing also decreases the lightness, but increases the yellowness of monolithic zirconia.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Propiedades de Superficie
/
Circonio
/
Pulido Dental
/
Luz
Idioma:
Inglés
Revista:
The Journal of Advanced Prosthodontics
Año:
2013
Tipo del documento:
Artículo
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