Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Effects Of Two 10% Peroxide Carbamide Bleaching Agents On Dentin Microhardness At Different Time Intervals.|
|Author:||de Freitas, Patrícia Moreira|
Basting, Roberta Tarkany
Rodrigues, Júnior Antonio Luiz
Serra, Mônica Campos
|Abstract:||The purpose of this in vitro study was to evaluate the microhardness of human dentin exposed to two 10% carbamide peroxide agents at different bleaching times. Opalescence 10% and Rembrandt 10% were tested. A placebo agent was used as a control group. The bleaching and placebo agents were applied to the surface of human dentin fragments for 8 hours and then stored in individual receptacles with artificial saliva for the remaining 16 hours each day. Microhardness testing was performed at baseline, after 8 hours, 7, 14, 21, 28, 35, and 42 days of treatment, and 7 and 14 days posttreatment. Analysis of Variance and the Tukey test revealed significant differences in microhardness values for dentin treated with the agents within each time interval. There was a decrease in the microhardness values of dentin for both bleaching agents after 8 hours of treatment. Fourteen days after the completion of treatment, the microhardness values for dentinal surfaces treated with either Opalescence or Rembrandt reached the baseline values; the dentinal surfaces treated with a placebo exhibited an increase in microhardness values posttreatment. Ten percent carbamide peroxide bleaching agents decreased dentinal microhardness over time, but after 14 days in artificial saliva storage at the completion of treatment, the baseline microhardness values were recovered.|
|Subject:||Analysis Of Variance|
Statistics As Topic
|Citation:||Quintessence International (berlin, Germany : 1985). v. 33, n. 5, p. 370-5, 2002-May.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.