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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of Different Light Sources and Enamel Preconditioning on Color Change, H2O2 Penetration, and Cytotoxicity in Bleached Teeth

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Goncalves, R. S. [1] ; Costa, C. A. S. [2] ; Soares, D. G. S. [3] ; dos Santos, P. H. [3] ; Cintra, L. T. A. [1] ; Briso, A. L. F. [1]
Total Authors: 6
[1] Univ Estadual Paulista, UNESP, Dept Restorat Dent, Aracatuba Dent Sch, Sao Paulo - Brazil
[2] Univ Estadual Paulista, UNESP, Dept Physiol & Pathol, Araraquara Sch Dent, Sao Paulo - Brazil
[3] Univ Estadual Paulista, UNESP, Dept Dent Mat & Prosthodont, Araraquara Sch Dent, Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Operative Dentistry; v. 41, n. 1, p. 83-92, JAN-FEB 2016.
Web of Science Citations: 3

This study evaluated the effects of acid etching of the enamel and the combination of different light sources (halogen light, light-emitting diodes {[}LEDs], and LED/Laser) and the bleaching product on color change, penetration of hydrogen peroxide (H2O2), and cytotoxicity over time. The color change (DE) and the amount of H2O2 that permeated the tooth tissue were analyzed using a spectrophotometer. Cell metabolism and morphology were evaluated using the methylthiazol tetrazolium assay and scanning electron microscopy, respectively. The DE values and H2O2 permeation were not significantly different under any of the experimental conditions. Tooth whitening significantly reduced cell metabolism, regardless of whether a light source was used. Preconditioning the enamel did not influence the cellular metabolism in any group. In conclusion, combining the bleaching product with different light sources and/or preconditioning the enamel resulted in few significant changes in color, transenamel and transdentinal penetration of H2O2, or cytotoxicity and cell morphology. (AU)

FAPESP's process: 12/06066-0 - Effect of Different Light Sources and Acid-Etching Of Enamel on H2O2 Penetration, Cytotoxicity and the Color Change Occurred in Whitened Bovine Teeth
Grantee:Rafael Simões Gonçalves
Support type: Scholarships in Brazil - Master
FAPESP's process: 10/17637-3 - Color alteration and trans-enamel, and trans-dentinal H2O2 penetration and cytotoxicity in bleached teeth
Grantee:André Luiz Fraga Briso
Support type: Regular Research Grants