Effect of Er,Cr:YSGG laser and fluoride application on enamel demineralization

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2007
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Caries Research
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This study evaluated the influence of sub-ablative Er,Cr:YSGG laser and topical fluoride application on incipient caries development in vitro. One hundred and sixty human enamel slabs were ramdomly divided into eight equal groups: (1) untreated (control); (2–4) irradiated with Er,Cr:YSGG laser at 0.25, 0.50 and 0.75 W, respectively; (5) treated with acidulated phosphate fluoride (APF; 1.23% F) for 4 min; (6–8) pre-irradiated with Er,Cr:YSGG laser at 0.25, 0.50 and 0.75 W, respectively and subjected to APF application. All groups were submitted to pH-cycling simulating a cariogenic challenge, and after 10 cycles mineral loss ( Δ Z) was measured in enamel. Calcium, inorganic phosphorus (P i ) and fluoride concentrations were also measured in the demineralizing and remineralizing pH-cycling solutions. Data were analyzed by ANOVA ( α = 0.05). No differences in Δ Z were found between laser irradiation at 0.25 W, 0.50 W and controls, while after laser irradiation at 0.75 W (Group 4) and application of APF (Group 5) there was a significant decrease in Δ Z. Laser irradiation at 0.50 and 0.75 W prior to APF application there was a significantly lower Δ Z than in other groups. A significant increase in Ca and P i concentrations was observed in demineralizing solutions compared to the initial concentrations, but no significant changes in Ca and P i concentrations were detected between any groups. A significant decrease in fluoride concentration was observed in pH-cycling solutions of control and 0.25 W laser groups, while the association of laser at 0.50 and 0.75 W with fluoride promoted an increase of fluoride content in remineralizing solutions. In conclusion, Er,Cr:YSGG laser irradiation at 0.50 and 0.75 W, associated with fluoride, seems to be a good alternative for reducing enamel demineralization.

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ANA, P.A.; TABCHOURY, C.P.M.; CURY, J.A.; ZEZELL, D.M. Effect of Er,Cr:YSGG laser and fluoride application on enamel demineralization. Caries Research, v. 41, n. 4, p. 325-326, 2007. DOI: 10.1159/000103637. Disponível em: http://repositorio.ipen.br/handle/123456789/34052. Acesso em: 25 Feb 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.

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