| Microhardness change of enamel due to bleaching with in-office bleaching gels of different acidity. | |
| | |
MedLine Citation:
|
PMID: 21780968 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Abstract Objective. The aim of this study was to assess the enamel microhardness treated with three in-office bleaching agents, containing 35% hydrogen peroxide with different acidity. Materials and methods. Bovine incisors were divided into three groups that received the following bleaching agents: Whiteness HP, Total Bleach and Opalescence Xtra. Three gel applications/10-min each, totaling 30-min of bleaching treatment, were made on the teeth and activated with a blue LED (1000 mW/470 nm) combined to a LASER (120 mW/795 nm) device (Easy Bleach-Clean Line). Vickers hardness (VH) was evaluated at baseline and after the bleaching procedure. The values of Hardness loss [HNL] (% reduction) were calculated. The two-sample t-test was used for comparison of the HNL of the three bleaching products (5% level of significance). Results. The Opalescence Xtra, which had the lowest pH value (pH = 4.30), showed a significant increase of HNL when compared with Total Bleach bleaching agent, which had the highest pH value (pH = 6.62). Conclusions. The 35% hydrogen peroxide bleaching agents resulted in a reduction in surface enamel microhardness and bleaching with the most acid agent resulted in a significant enamel hardness loss compared to the less acid agent (4.30 vs 6.62). Strategies proposed to reduce the enamel loss after bleaching treatment may include the use of daily fluoride therapy, mouth rinsing (fluoride, milk and sodium bicarbonate solution), fluoride/bicarbonate dentifrices without abrasives, do not toothbrush immediately after bleaching, fluorides and calcium add to bleaching agents. |
| | |
Authors:
|
Juliana G Magalhães; Angela R K Marimoto; Carlos R G Torres; Clovis Pagani; Symone C Teixeira; Daphne C Barcellos |
Related Documents
:
|
6791538 - Purification and further characterization of phenol extract from listeria monocytogenes. 19857078 - Antioxidant potential of peels and fleshes of peaches from different cultivars. 18778068 - Simulated digestion and antioxidant activity of red wine fractions separated by high sp... 10691648 - Study of interactions between food phenolics and aromatic flavors using one- and two-di... 18256868 - Identification and functional expression of a delta9-fatty acid desaturase from psychro... 5253648 - Rates of polypeptide chain assembly in liver in vivo: relation to the mechanism of temp... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-7-25 |
Journal Detail:
|
Title: Acta odontologica Scandinavica Volume: - ISSN: 1502-3850 ISO Abbreviation: - Publication Date: 2011 Jul |
Date Detail:
|
Created Date: 2011-7-25 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0370344 Medline TA: Acta Odontol Scand Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Department of Restorative Dentistry , São Paulo State University, São José dos Campos, School of Dentistry, São Paulo, SP , Brazil. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Detection and characterization of a new astrovirus in chicken and turkeys with enteric and locomotio...
Next Document: Three-dimensional analysis of the pulp cavity on surface models of molar teeth, using X-ray micro-co...