Analysis of the Chemical Modification of Dental Enamel Submitted to 35% Hydrogen Peroxide "In-Office" Whitening, with or without Calcium. (28th August 2017)

• Record Type: Journal Article
• Authors: Moreira, Rudá França; Santos, Fábio Pinheiro; Santos, Estevão Antero; Santos, Ramon Silva dos; Anjos, Marcelino José dos; Miranda, Mauro Sayão de
• Other Names: Yavuz Izzet Academic Editor.
• Is Part Of: International journal of dentistry. Volume 2017(2017)
• Publication Date: 2017-08-28
• Subjects: Dentistry -- Periodicals; Dentistry; Dentistry -- Periodicals; Electronic journals; Periodicals; 617.6
• DOI: 10.1155/2017/4646789
• Languages: English
• ISSNs: 1687-8728

Abstract

Abstract : Purpose . The purpose of this study was to evaluate changes in calcium and phosphorus content in dental enamel when subjected to "in-office" whitening for an extended time by using a 35% hydrogen peroxide solution, with and without calcium. Materials and Methods . 10 human teeth, from which the roots had been removed, were embedded in epoxy resin, and their surfaces were smoothed. The specimens were divided into two groups; in group 1, a whitening solution without calcium was used, while in group 2, the solution included calcium. Each specimen was evaluated at 6 different points before the bleaching treatment, and these points were reassessed after each session. A total of five sessions were carried out. Concentrations of calcium and phosphorus were measured by using the technique of X-ray fluorescence. Results . After performing a statistical analysis, it was found that there was no statistically significant loss of calcium and phosphorus during the whitening treatment, and the groups showed no statistical differences. Conclusion . Excessive use of hydrogen peroxide, with or without calcium, causes no loss of calcium and phosphorus.