| Influence of remineralizing gels on bleached enamel microhardness in different time intervals. | |
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MedLine Citation:
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PMID: 20420061 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study evaluated the influence of bleaching gel pH, the effect of applying remineralizing gels after bleaching and the effect of artificial saliva on enamel microhardness. Seventy bovine incisors were divided into three groups: Group 1 (n=10) received no bleaching procedure (control); Group 2 was bleached with a 35% hydrogen peroxide neutral gel (n=30) and Group 3 was bleached with a 35% hydrogen peroxide acid gel (n=30). Each experimental group was subdivided into three groups (n=10) according to the post-bleaching treatment: storage in artificial saliva, application of a fluoride gel and application of a combination of calcium and fluoride gel. The specimens were stored in artificial saliva for 7, 15 and 30 days and enamel microhardness was evaluated. The Vickers microhardness data were analyzed by three-way RM ANOVA, which revealed a significant difference only for treatment factor. The Tukey's test showed that the groups bleached followed by no additional treatment exhibited microhardness means significantly lower than the bleached groups treated with remineralizing gels. The Dunnet's test showed a significant difference only for the group bleached with acid gel without remineralizing treatment compared to the control group measured immediately after bleaching. It was concluded that acid bleaching gel significantly reduced enamel microhardness and that use of remineralizing gels after bleaching can significantly enhance the microhardness of bleached enamel. |
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Authors:
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Alessandra Bühler Borges; Karen Cristina Kazue Yui; Thaís Corrêa D'Avila; Camila Lurie Takahashi; Carlos Rocha Gomes Torres; Alexandre Luis Souto Borges |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Operative dentistry Volume: 35 ISSN: 0361-7734 ISO Abbreviation: Oper Dent Publication Date: 2010 Mar-Apr |
Date Detail:
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Created Date: 2010-04-27 Completed Date: 2010-05-11 Revised Date: 2013-04-05 |
Medline Journal Info:
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Nlm Unique ID: 7605679 Medline TA: Oper Dent Country: United States |
Other Details:
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Languages: eng Pagination: 180-6 Citation Subset: D |
Affiliation:
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Department of Restorative Dentistry at São José dos Campos School of Dentistry-UNESP--São Paulo State University, São José dos Campos, SP, Brazil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Calcium Phosphates / pharmacology Cattle Dental Enamel / drug effects* Gels / pharmacology Hardness / drug effects Hydrogen Peroxide / adverse effects Oxidants / adverse effects Sodium Fluoride / pharmacology Time Factors Tooth Bleaching / adverse effects* Tooth Remineralization / methods* |
| Chemical | |
Reg. No./Substance:
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0/Calcium Phosphates; 0/Gels; 0/Oxidants; 7681-49-4/Sodium Fluoride; 7722-84-1/Hydrogen Peroxide; 97Z1WI3NDX/calcium phosphate |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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