Color alteration in teeth subjected to different bleaching techniques

Author(s)

Briso, A. L. F. ^[1] ; Fonseca, M. S. M. ^[1] ; de Almeida, L. C. A. G. ^[1] ; Mauro, S. J. ^[1] ; dos Santos, P. H. ^[1]

Affiliation

^[1] Univ Estadual Paulista, UNESP, Aracatuba Sch Dent, Dept Restorat Dent, Aracatuba, Sao Pauio - Brazil

• Document type: Journal article
• Source: Laser Physics; v. 20, n. 12, p. 2066-2069, DEC 2010.
• Web of Science Citations: 12

Abstract

This study evaluated the color alteration of teeth subjected to the action of different bleaching agents and the influence of light sources commonly used in association with these products, In GI, the specimens remained immersed in artificial saliva. The specimens in GII were bleached with a 10% carbamide peroxide gel 4 hours/day during 3 weeks; the teeth in the other three groups were subjected to three sessions of three 10-min applications of 35% hydrogen peroxide gel at 7-day intervals. In GIII, no light was used, while in GIV and GV the gel was associated with a quartz-tungsten-halogen light and a LED/laser source, respectively. The teeth color was evaluated before and 7 days after the bleaching sessions by reflectance spectrophotometry. Data were analyzed statistically by ANOVA and Fisher's test (alpha = 0.05), and showed that a significant color change was obtained in all treated groups. After the first week of treatment and at the end of it, the bleaching protocols showed similar results. The results of the present study indicate that association of a light source is not necessary to obtain the bleaching effect and that optimal bleaching can be achieved with all techniques tested. (AU)

• FAPESP's process: 07/02401-1 - Comparison of color changes in teeth subjected to different bleaching agents and activation methods
• Grantee: Mariana Saraiva Marthes Fonseca
• Support Opportunities: Scholarships in Brazil - Scientific Initiation