Influence of Staining Solutions on Color Change and Enamel Surface Properties During At-home and In-office Dental Bleaching: An
| Autor: | Avd Pinto, Flb do Amaral, Cecilia Pedroso Turssi, F.M.G. França, Roberta Tarkany Basting, Natália Russo Carlos |
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| Rok vydání: | 2019 |
| Předmět: |
genetic structures
Surface Properties 030303 biophysics Color 03 medical and health sciences 0302 clinical medicine Tooth Bleaching Animals Humans Urea Dental Enamel General Dentistry 0303 health sciences Enamel paint Staining and Labeling Chemistry Dental enamel 030206 dentistry Hydrogen Peroxide Pulp and paper industry Staining Peroxides visual_art visual_art.visual_art_medium Cattle sense organs In situ study |
| Zdroj: | Operative dentistry. 44(6) |
| ISSN: | 1559-2863 |
| Popis: | SUMMARY The purpose of this in situ study was to evaluate the influence of staining solutions (coffee and cola) on the color change, microhardness, roughness, and micromorphology of the enamel surface during at-home and in-office dental bleaching. One hundred and thirty-five enamel bovine blocks were prepared to perform the evaluations. Fifteen volunteers used an intraoral appliance with nine enamel blocks for 15 days. The enamel blocks were randomly assigned among the different groups according to the three treatments: in-office bleaching with high hydrogen peroxide concentration (Opalescence Boost PF 40%, Ultradent) for 40 minutes in three sessions (first, eighth, and 15th days of treatment), at-home bleaching with low carbamide peroxide concentration (Opalescence PF 10%, Ultradent) for 60 minutes daily for 15 days, and a control group (no bleaching agent applied). The enamel blocks were immersed daily in different staining solutions (coffee or cola) for 30 minutes for 15 days or were not submitted to staining (control) to obtain a factorial scheme (3×3) of the dental bleaching treatment and staining solution (n=15). The microhardness analyses (Knoop), roughness evaluations (Ra), surface micromorphological observations, and color measurements (using the CIELAB system and the VITA Classical scale) were made before and after the bleaching treatments to assess immersion in staining solutions. Mixed model tests showed that there was a decrease in enamel microhardness after exposure to cola compared with coffee and the control group (p |
| Databáze: | OpenAIRE |
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