Efficacy of Mouthwashes Containing Hydrogen Peroxide on Tooth Whitening

Abstract

The aim of this study was to analyze the efficacy of mouthwashes containing hydrogen peroxide compared with 10% carbamide peroxide (CP) gel. Fifty enamel-dentin samples were obtained from bovine incisors and then stained in a tea solution. The stained samples were randomly divided into five groups according to the whitening product applied (n = 10): AS: no whitening (negative control), with the samples stored in artificial saliva; CR: Crest 3D White mouthwash; LS: Listerine Whitening mouthwash; SC: Scope White mouthwash; and OP group: 10% CP Opalescence PF (positive control). Color measurements were carried out with a spectrophotometer before staining, after staining, and on the 7th, 28th, and 56th day of the whitening period. The data were analyzed using two-way analysis of variance followed by a Tukey post hoc test. The color change (ΔE) was significantly greater in all the groups compared to that of the AS group. After 56 days, no significant differences were found among the mouthwash products with respect to color change (P > 0.05). The whiteness of the teeth treated with the mouthwashes increased significantly over time. Nevertheless, the color change achieved with the mouthwashes was significantly lower than that achieved with the 10% CP at-home bleaching gel.

Evaluation of the effects of whitening mouth rinses combined with conventional tooth bleaching treatments

“…Therefore, the conventional treatments, whether in-office or at-home, promoted color changes of dental enamel in the short term. The present results are consistent with those of previous studies [817], which showed that these treatments were more effective for color change than whitening mouth rinses alone.…”

“…L* represented the degree of lightness, which could vary from black (0) to white (100). a* represented the degree of color in the red (+a*) -green (−a*) axis, and b* corresponded to the same variable in the yellow (+b*) -blue (−b*) axis of the samples [151617]. Each sample was measured at 2 time points: at the beginning of the study (T0, baseline) and after treatment (T1).…”

Effect of mouth rinses on tooth enamel surface

“…Value L* represented the degree of lightness; it could vary from black (0) to white (100). Values a* and b* represented the red (+a*), green (−a*), yellow (+b*), and blue (−b*) degree in the samples [15][16][17]. Each sample was measured at two points in time: when the study began and after the mouth rinse application.…”

Clareamento Dental, Protocolo de aplicação em dentes vitais: Uma Revisão da Literatura / Tooth Whitening, Vital Teeth Application Protocol: A Literature Review

“…O processo de clareamento consiste na aplicação de um gel clareador, à base de peróxido de carbamida ou peróxido de hidrogênio, sobre os dentes a serem branqueados (CANEPPELE et al, 2015;KARADAS;HATIPOGLU, 2015). Ambos os métodos devem ser indicados e supervisionados pelo cirurgião-dentista, sempre impondo limites ao paciente e…”