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Alterations in enamel remineralization in vitro induced by blue light

  • Laser Methods in Chemistry, Biology, and Medicine
  • Published:
Laser Physics

Abstract

Blue light, especially from LED devices, is a very frequently used tool in dental procedures. However, the investigations of its effects on dental enamel are focused primarily on enamel demineralization and fluoride retention. Despite the fact that this spectral region can inhibit enamel demineralization, the effects of the irradiation on demineralized enamel are not known. For this reason, we evaluated the effects of blue LED on remineralization of dental enamel. Artificial lesions were formed in bovine dental enamel blocks by immersing the samples in undersaturated acetate buffer. The lesions were irradiated with blue LED (455 nm, 1.38 W/cm2, 13.75 J/cm2, and 10 s) and remineralization was induced by pH-cycling process. Cross-sectional hardness was used to asses mineral changes after remineralization. Non-irradiated enamel lesions presented higher mineral content than irradiated ones. Furthermore, the mineral content of irradiated group was not significantly different from the lesion samples that were not submitted to the remineralization process. Results obtained in the present study show that the blue light is not innocuous for the dental enamel and inhibition of its remineralization can occur.

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Authors and Affiliations

  1. Centro de Lasers e Aplicações, IPEN-CNEN/SP, Av. Prof. Lineu Prestes 2242, 05508-000, São Paulo, Brazil

    I. T. Kato, D. M. Zezell & N. U. Wetter

  2. Departamento de Odontopediatria, Faculdade de Odontologia, USP, Av. Prof. Lineu Prestes 2227, 05508-000, São Paulo, Brazil

    F. M. Mendes

Authors
  1. I. T. Kato
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  2. D. M. Zezell
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  3. F. M. Mendes
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  4. N. U. Wetter
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Correspondence to I. T. Kato.

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Original Russian Text © Astro, Ltd., 2010.

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Kato, I.T., Zezell, D.M., Mendes, F.M. et al. Alterations in enamel remineralization in vitro induced by blue light. Laser Phys. 20, 1469–1474 (2010). https://doi.org/10.1134/S1054660X10110095

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  • DOI: https://doi.org/10.1134/S1054660X10110095

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