Is It Necessary to Prepare the Enamel before Dental Bleaching?
| Autor: | Andréa Dias Neves Lago, Erika Michele dos Santos Araújo, Adriana Bona Matos, Narciso Garone-Netto, Patricia D. Freitas |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Article Subject
genetic structures Dentistry 030207 dermatology & venereal diseases 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Sodium fluoride In vitro study Hydrogen peroxide General Dentistry Enamel paint Chemistry business.industry 030206 dentistry lcsh:RK1-715 Color changes visual_art lcsh:Dentistry visual_art.visual_art_medium Knoop hardness test sense organs business Previously treated Fluoride Research Article |
| Zdroj: | International Journal of Dentistry, Vol 2017 (2017) International Journal of Dentistry |
| ISSN: | 1687-8736 1687-8728 |
| Popis: | The aim of this in vitro study was to assess the influence of distinct surface treatments on the microhardness and color of enamel that will be bleached. Surface treatments are tested, accordingly: G1, no treatment; G2, 2% sodium fluoride; G3, casein phosphopeptide paste; G4, 2% fluoride+Nd:YAG laser. Forty blocks from bovine teeth composed the sample that were tested in Knoop microhardness (n=10) and in color change (n=10). After 24 h, bleaching with 35% hydrogen peroxide was performed for 45 min. Microhardness and color changes (using parametersΔE,ΔL,Δa, andΔb) were assessed before and after bleaching. The data were analyzed by two-way ANOVA and Tukey’s test (p<0.05). Despite all surface treatments, a reduction of enamel microhardness occurred immediately after bleaching in all groups, being greater in G1. Enamel color changed in all groups. Immediately after bleaching, there was a decrease on enamel microhardness. However, after 7 days, some of those specimens previously treated before bleaching significantly recovered their initial microhardness without influencing the esthetic results of bleaching. |
| Databáze: | OpenAIRE |
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