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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Effect of Er,Cr:YSGG Laser and Professional Fluoride Application on Enamel Demineralization and on Fluoride Retention

Texto completo
Autor(es):
Ana, P. A. [1] ; Tabchoury, C. P. M. [2] ; Cury, J. A. [2] ; Zezell, D. M. [3]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed Abc, Santo Andre - Brazil
[2] Univ Estadual Campinas, Piracicaba Dent Sch, Piracicaba - Brazil
[3] IPEN CNEN SP, Inst Pesquisas Energet & Nucl, Lab Biofoton, Ctr Lasers & Aplicacoes, BR-05508000 Sao Paulo - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Caries Research; v. 46, n. 5, p. 441-451, 2012.
Citações Web of Science: 24
Resumo

This study evaluated the effect of Er,Cr:YSGG laser irradiation and professional fluoride application on enamel demineralization and on fluoride formation and retention. In a blind in vitro study, 264 human enamel slabs were distributed into 8 groups: G1 - untreated; G2 - treated with acidulated phosphate fluoride gel (APF gel, 1.23% F) for 4 min; G3, G4 and G5 - irradiated with Er,Cr:YSGG at 2.8, 5.6 and 8.5 J/cm(2), respectively; G6, G7 and G8 - preirradiated with Er,Cr:YSGG at 2.8, 5.6 and 8.5 J/cm2, respectively, and subjected to APF gel application. Twenty slabs of each group were submitted to a pH-cycling regimen, and enamel demineralization was evaluated in 10 slabs of each group. In the other 10 slabs, CaF2-like material was determined. To evaluate F formed, 10 additional slabs of each group, not subjected to the pH cycling, were submitted to analysis of CaF2-like material and fluorapatite, while the other 3 slabs of each group were evaluated by scanning electron microscopy. The F content was also measured in all pH-cycling solutions. Laser at 8.5 J/cm(2) and APF treatment reduced enamel demineralization compared to the control (p < 0.05), but the combination of these treatments was not more efficient than their isolated effect. A higher concentration of retained CaF2-like material was found in laser groups followed by APF in comparison with the APF gel treatment group. The findings suggest that laser treatment at 8.5 J/cm(2) was able to decrease hardness loss, even though no additive effect with APF was observed. In addition, laser treatment increased the formation and retention of CaF2 on dental enamel. Copyright (c) 2012 S. Karger AG, Basel (AU)

Processo FAPESP: 04/02229-6 - Estudo in vitro da resistência ácida e da incorporação de flúor em esmalte dental irradiado com laser de Er, Cr:YSGG
Beneficiário:Patricia Aparecida da Ana
Linha de fomento: Bolsas no Brasil - Doutorado Direto
Processo FAPESP: 05/51689-2 - Centro de Pesquisa em Óptica e Fotônica - UNICAMP (CEPOF-UNICAMP)
Beneficiário:Hugo Luis Fragnito
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs