In vitro study of the effects of diode laser on dentin hypersensitivity and evaluation of intra-pulpal temperature variation
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Lasers in Medical Science
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To evaluate the efficacy and safety of different wavelengths of high-power diode lasers for the treatment of dentin hypersensitivity
by analyzing morphological changes and temperature variation. Human third molars were irradiated with five
different commercially available lasers at wavelengths of 808 nm, 940 nm, 976 nm, and 980 nm, both with and without
the use of a photoinitiator (activated charcoal). Temperature variations were monitored using thermocouples, and morphological
changes were assessed through scanning electron microscopy. Lasers with wavelengths of 940 nm, 976 nm,
and 980 nm, used without a photoinitiator, promoted dentinal tubule obliteration without causing thermal damage. Lasers
with wavelengths of 808 nm, 940 nm, 976 nm, and 980 nm, when combined with a photoinitiator, resulted in even lower
temperature variation compared to the non-photoinitiator groups, although no regular fused surface was observed. Diode
laser parameters, except Group 1(808 nm without photoinitiator), are potentially safe for dentinal tubule obliteration. The
use of a photoinitiator continues to be an effective strategy for minimizing temperature variations during irradiation.
Como referenciar
RODRIGUEZ, CHRISTIAN G.B.; MANNA, MARIA P.N.C.; TARRILO, FIORELLA E.A.; ZEZELL, DENISE M.; EDUARDO, CARLOS de P. In vitro study of the effects of diode laser on dentin hypersensitivity and evaluation of intra-pulpal temperature variation. Lasers in Medical Science, v. 40, n. 1, p. 1-9, 2025. DOI: 10.1007/s10103-025-04291-4. Disponível em: https://repositorio.ipen.br/handle/123456789/49368. Acesso em: 04 Mar 2026.
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