Effects of treatment with aqueous and acid-based coloring liquid on the color of zirconia

To preserve the mechanical property of color-treated zirconia for optimal restoration longevity, aqueous colorants have been developed as an alternative to acid-based coloring agents. However, little is known regarding the effects of aqueous colorants on the color of zirconia. The purpose of this in...

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Bibliographic Details
Published in:The Journal of prosthetic dentistry 2019-02, Vol.121 (2), p.363.e1-363.e5
Main Authors: Nam, Ji-Young, Park, Mi-Gyoung
Format: Article
Language:English
Subjects:
Dentistry
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Summary:To preserve the mechanical property of color-treated zirconia for optimal restoration longevity, aqueous colorants have been developed as an alternative to acid-based coloring agents. However, little is known regarding the effects of aqueous colorants on the color of zirconia. The purpose of this in vitro study was to compare the effect of aqueous coloring liquids with acid-based coloring liquids on the color of zirconia. Eighty monolithic zirconia specimens (10×10×2 mm) were fabricated and divided into 4 groups according to their color treatment: unshaded zirconia (control), precolored zirconia, aqueous coloring liquid on zirconia, and acid-based coloring liquid on zirconia. The shaded zirconia specimens were further divided into 3 subgroups based on the number of coloring applications used (1, 3, or 6). The International Commission on Illumination (CIELab) color coordinates were measured by spectrophotometry. Significant differences in the CIE a∗ and b∗ values were observed between the specimen groups treated with the aqueous coloring liquid and the acid-based coloring liquid (P
ISSN:0022-3913
1097-6841
DOI:10.1016/j.prosdent.2018.09.015