In vitro study of Er,Cr:YSGG laser effects when used for the prevention of dentin demineralization
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2019
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BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, 26th
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Resumo
Erbium lasers can be used to prevent dental caries, which
has a high prevalence in the worldwide population.
However, effective irradiation parameters for root dentin
have not yet been determined using the Er,Cr:YSGG laser.
Objective: this study evaluated the chemical, morphological
and optical effects of Er,Cr:YSGG laser on root dentin
when aimed at preventing root caries. Methodology: 75
bovine root dentin slabs were randomly distributed in 5
groups: G1-untreated; G2-treated with acidulated phosphate
fluoride gel (APF-gel, [F−]= 1.23%); G3-Er,Cr:
YSGG laser irradiation (2.78 μm, 60 μs, 6 J/cm2,
8,67 mJ/pulse, 0.25 W); G4-Laser irradiation + APF-gel
application; G5-APF-gel application + Laser irradiation.
The chemical and morphological evaluations were performed
using Fourier transformed infrared spectroscopy
and scanning electron microscopy, respectively. Afterwards,
the samples were submitted to an 8-day pH-cycling
model and the optical attenuation coefficient was evaluated
by optical coherence tomography. The statistical
analysis was performed considering the level of significance
of 5%. Laser irradiation alone does not alter the
dentin composition, but the previous application of
APF-gel followed by laser irradiation significantly
decreased the content of m3m4 carbonate of dentin. This
treatment also promoted greater morphological alterations,
such as ablation of the surface, when compared to the
treatments alone. After demineralization, this treatment also presented the highest optical attenuation coefficient
value when compared to the other treatments, indicating
less demineralization of the samples. Conclusion: Er,Cr:
YSGG laser presents potential for use in prevention of root
dentin demineralization, and is more efficient when
preceded by the application of APF.
Como referenciar
FERREIRA, ELIZABETE dos S.; PRATES, ILKA T.K.; SANTOS JUNIOR, SERGIO L.M. dos; DEL VALLE, MATHEUS; ZEZELL, DENISE M.; ANA, PATRICIA A. In vitro study of Er,Cr:YSGG laser effects when used for the prevention of dentin demineralization. In: COSTA-FELIX, RODRIGO (ed.); MACHADO, JOÃO C. (ed.); ALVARENGA, ANDRÉ V. (ed.). In: BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, 26th, October 21-25, 2018, Armação de Buzios, RJ. Proceedings... Singapore: Springer Nature Singapore, 2019. p. 825-829. (IFMBE Proceedings 70/2). DOI: 10.1007/978-981-13-2517-5_127. Disponível em: http://repositorio.ipen.br/handle/123456789/30954. Acesso em: 20 Mar 2026.
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.