INFLUENCE OF SOLUTIONS WITH PIGMENTATION POTENTIAL ON TOOTH COLOR AFTER BLEACHING USING 22% CARBAMIDE PEROXIDE
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Data
2017-07-01
Autores
Oliveira Correia, Ayla Macyelle de [UNESP]
Duarte Melo, Bruno Everthon
Barros Cedraz, Juliana da Silva
Rocha, Daniel Maranha da
Santos, Natanael Barbosa dos
Mendonca Fragoso, Larissa Silveira de
Título da Revista
ISSN da Revista
Título de Volume
Editor
Univ Federal Uberlandia
Resumo
The color stability achieved by dental bleaching can be affected by exposure to staining agents present in foods. However, there is scarce research regarding tooth staining during dental bleaching. This study investigated the effect of pigments on the color stability of dental elements during dental bleaching. Blocks obtained from bovine incisors were divided into seven groups (n = 10) in accordance with the staining pigments (distilled water -control; coffee, cola, tea, red wine, chocolate milk and soya sauce (Shoyu). The color was evaluated with a spectrophotometer (Minolta CR-321, Japan) before and after dental bleaching (1st and 14th days), employing the (CIE) L*a*b* system. The dental bleaching procedure was performed using 22% carbamide peroxide gel applied to the sample surface for a period of 1 hour each day, for 14 days. After dental bleaching, the teeth were exposed to 20 ml of staining solution for 5 minutes, at 37 degrees C and 100 rpm for different periods. During the experiment, the samples were stored in distilled water. Data was analyzed using ANOVA followed by Tukey tests, with a significance level of 5%. Significant differences for Delta E* values (p<0.05) were observed between the groups. The Shoyu group presented a decrease in luminosity (negative value of Delta L*). It could be concluded that all solutions contained pigments that promoted staining on the surface. However, bleached enamel was susceptible to staining with soya sauce (Shoyu), while other substances did not interfere with the dental bleaching.
Descrição
Palavras-chave
Dental materials, Color, Pigmentation, Tooth bleaching, Spectrophotometry
Como citar
Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 33, n. 4, p. 1106-1112, 2017.