Dental bleaching efficacy with diode laser and LED irradiation
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Brazilian Dental Journal
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Objective: This in vitro study evaluated the whitening efficacy of
LED and diode laser irradiation during the dental bleaching procedure,
using the two agents Opalescence X-tra and HP Whiteness.
Background: Bleaching techniques achieved significant advances
with the use of coherent or incoherent radiation sources to activate the
bleaching chemicals. Methods: Atotal of 60 bovine incisors were randomly
divided into six groups, three for each bleaching agent, receiving
1) only agent, 2) agent and LED irradiation at wavelength of 470
nm, 3) agent and 1.6 watt diode Laser at 808 nm. The results of the
irradiations were characterized with the CIELAB system by measuring
the L*a*b* values for the teeth before and after bleaching.
Results: The average increase of the lightness value (CIELAB L*) of
the different groups was 3-7 and the average chroma value decreased
by 5-9. Conclusions: This is to our knowledge the first time that the
light sources Laser and LED are compared with respect to their
whitening capability when applied to different agents. Best overall
results are obtained with the Whiteness HP and Laser association.
Como referenciar
BARROSO, M.C.S.; WETTER, N.U.; PELINO, J.E.P. Dental bleaching efficacy with diode laser and LED irradiation: an in vitro study. Brazilian Dental Journal, v. 15, p. 77-77, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32753. Acesso em: 27 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.