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Proceedings Paper

Evaluation of enamel by scanning electron microscopy green LED associated to hydrogen peroxide 35% for dental bleaching
Author(s): Juliana S. C. Monteiro; Susana C. P. S. de Oliveira; Fátima A. A. Zanin; Gustavo M. P. Santos; Fernando J. P. Sampaio; Rafael Araújo Gomes Júnior; Maria F. M. Gesteira; Marcos A. Vannier-Santos; Antônio Luiz Barbosa Pinheiro
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Paper Abstract

Dental bleaching is a frequently requested procedure in clinical dental practice. The literature is contradictory regarding the effects of bleaching agents on both morphology and demineralization of enamel after bleaching. The aim of this study was to analyze by SEM the effect of 35% neutral hydrogen peroxide cured by green LED. Buccal surfaces of 15 pre-molars were sectioned and marked with a central groove to allow experimental and control groups on the same specimen. For SEM, 75 electron micrographs were evaluated by tree observers at 43X, 220X and 1000X. Quantitative analysis for the determination of the surface elemental composition of the samples through X-ray microanalysis by SEM was also performed. The protocol tested neither showed significant changes in mineral composition of the samples nor to dental enamel structure when compared to controls. SEM analysis allowed inferring that there were marked morphological differences between the enamel samples highlighting the need for the use of the same tooth in comparative morphological studies. The tested protocol did not cause morphological damage the enamel surface when compared to their respective controls.

Paper Details

Date Published: 18 February 2014
PDF: 7 pages
Proc. SPIE 8932, Mechanisms for Low-Light Therapy IX, 893214 (18 February 2014); doi: 10.1117/12.2038558
Show Author Affiliations
Juliana S. C. Monteiro, Univ. Federal da Bahia (Brazil)
National Institute of Optics and Photonics (Brazil)
Estatual Univ. de Feira de Santana (Brazil)
Susana C. P. S. de Oliveira, Univ. Federal da Bahia (Brazil)
National Institute of Optics and Photonics (Brazil)
Fátima A. A. Zanin, Univ. Federal da Bahia (Brazil)
National Institute of Optics and Photonics (Brazil)
Brugnera & Zanin Institute (Brazil)
Gustavo M. P. Santos, Fundação Oswaldo Cruz (Brazil)
Fernando J. P. Sampaio, Univ. Federal da Bahia (Brazil)
National Institute of Optics and Photonics (Brazil)
Rafael Araújo Gomes Júnior, Fundação Oswaldo Cruz (Brazil)
Maria F. M. Gesteira, Univ. Federal da Bahia (Brazil)
National Institute of Optics and Photonics (Brazil)
Marcos A. Vannier-Santos, Fundação Oswaldo Cruz (Brazil)
Antônio Luiz Barbosa Pinheiro, Univ. Federal da Bahia (Brazil)
National Institute of Optics and Photonics (Brazil)
Brugnera & Zanin Institute (Brazil)


Published in SPIE Proceedings Vol. 8932:
Mechanisms for Low-Light Therapy IX
Michael R. Hamblin; James D. Carroll; Praveen Arany, Editor(s)

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