Effect of Sodium Tripolyphosphate on Color Stability of In-Office Bleached Teeth

Abstract:

The purpose of this study was to investigate the effect of polyanionsodium tripolyphosphate (STP) on color stability of the bleached enamel upon exposure to a staining agent-red wine. Thirty specimens were prepared and bleached with 35% hydrogen peroxide (HP). Then, they were divided into three groups and immersed in different experiment solutions, including distilled and deionized water (DDW, negative control), 2% STP (PH 9.0) and 1000 ppm NaF aq. (positive control), before and after red wine stain challenge, 3 times per day. The color of all specimens was measured before and after exposure to red wine with a spectrophotometer, and total color change (ΔE*) were calculated. The data were analyzed with a one-way ANOVA and the means were compared by Tukeys post hoc analysis (α=0.05). STP treatment group demonstrated significantly less color change than DDW and NaF groups (p<0.05). No significant difference was observed between DDW and NaF group. It can be concluded that the staining susceptibility of bleached enamel decreased after application of polyanion sodium tripolyphosphate.

• Periodical: Advanced Materials Research (Volume 804)
• Pages: 57-61
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.804.57
• Online since: September 2013
• Authors: Huang Qin Chen, Bin Huang
• Keywords: Dental Stain, Sodium Tripolyphosphate, Tooth Bleaching

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