Color stability of dental enamel bleached with violet LED associated with or without Low concentration peroxide gels.

Photodiagnosis and Photodynamic Therapy
Bianca Matos FernandesRenata Siqueira Scatolin

Abstract

This study aimed to evaluate the in vitro color of dental enamel bleached with the violet LED, associated with or without low-concentration of peroxide; analyzed in two time intervals: 24 h later and 6 months after the treatment. Ninety fragments of bovine teeth (6 × 6 mm and 3 mm thick) were randomly divided into 6 groups according to bleaching treatment: NB - no bleaching, VL - Violet LED, HP- 7.5 % hydrogen peroxide, HP + VL - 7.5 % hydrogen peroxide + violet LED, CP - 22 % carbamide peroxide, CP + VL - 22 % carbamide peroxide + violet LED. The color change was analyzed by using a spectrophotometer, at time intervals of 24 h and 6 months after performing the bleaching techniques (n = 12). Scanning electron microscopy (SEM) was performed to verify the enamel surface morphology after treatment (n = 3). The color change data were analyzed using ANOVA and a post-hoc Tukey tests (α = 0.05). The VL group showed chromatic changes after 24 h of treatment, however the groups submitted to bleaching gel treatments associated with or without violet LED (CP + VL, CP, HP, HP + VL) showed the highest color change values at all time intervals analyzed, with color stability after 6 months of treatment for the CP + VL group. Scanning electron...Continue Reading

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Citations

May 30, 2021·Photodiagnosis and Photodynamic Therapy·Joatan Lucas de Sousa Gomes CostaMilton Carlos Kuga
Aug 25, 2021·Photodiagnosis and Photodynamic Therapy·Bianca Rossi de SouzaKaren Müller Ramalho
Sep 2, 2021·Photodiagnosis and Photodynamic Therapy·Joatan Lucas de Sousa Gomes CostaMilton Carlos Kuga

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