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Journal of Biomedical Optics

Mineral loss and color change of enamel after bleaching and staining solutions combination
Author(s): Larissa Sgarbosa N. de Araujo; Paulo H. dos Santos; Rodolfo B. Anchieta; Anderson Catelan; Andre Luiz Fraga Briso; Ana Carolina S. Zaze; Renato H. Sundfeld
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Paper Abstract

Pigments of food and beverages could affect dental bleaching efficacy. The aim of this investigation was to evaluate color change and mineral loss of tooth enamel as well as the influence of staining solutions normally used by adolescent patients undergoing home bleaching. Initial hardness and baseline color were measured on enamel blocks. Specimens were divided into five groups (n=5 ): G1 (control) specimens were kept in artificial saliva throughout the experiment (3 weeks); G2 enamel was exposed to 10% carbamide peroxide for 6 h daily, and after this period, the teeth were cleaned and stored in artificial saliva until the next bleaching session; and G3, G4, and G5 received the same treatments as G2, but after bleaching, they were stored for 1 h in cola soft drink, melted chocolate, or red wine, respectively. Mineral loss was obtained by the percentage of hardness reduction, and color change was determined by the difference between the data obtained before and after treatments. Data were subjected to analysis of variance and Fisher’s test (α=0.05 ). G3 and G5 showed higher mineral loss (92.96±5.50 and 94.46±1.00 , respectively) compared to the other groups (p0.05 ). G5 showed high-color change (9.34±2.90 ), whereas G1 presented lower color change (2.22±0.44 ) (p0.05 ). Acidic drinks cause mineral loss of the enamel, which could modify the surface and reduce staining resistance after bleaching.

Paper Details

Date Published: 28 October 2013
PDF: 6 pages
J. Biomed. Opt. 18(10) 108004 doi: 10.1117/1.JBO.18.10.108004
Published in: Journal of Biomedical Optics Volume 18, Issue 10
Show Author Affiliations
Larissa Sgarbosa N. de Araujo, Univ. Estadual de Campinas (Brazil)
Paulo H. dos Santos, State Univ. of São Paulo (Brazil)
Rodolfo B. Anchieta, State Univ. of São Paulo (Brazil)
Anderson Catelan, Univ. de São Paulo (Brazil)
Andre Luiz Fraga Briso, State Univ. of São Paulo (Brazil)
Ana Carolina S. Zaze, Univ. Paranaense (Brazil)
Renato H. Sundfeld, State Univ. of São Paulo (Brazil)

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