Microhardness of the dental enamel surface after irradiation with 960nm diode laser
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Brazilian Dental Journal
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Several authors analyzed laser irradiation of dental enamel in an
attempt to increase acid resistance and achieve caries prevention.
In some cases, the procedure has also been associated to the
application of a layer of fluoride. Micro-hardness measurements
are reliable tests used to determine the degree of resistance to
demineralization. In this work micro-hardness values of superficial
dental enamel have been measured before and after irradiation
with a 960 nm diode laser, using tested laser parameters that
are safe and cause no injuries to the adjacent tissue. Laser parameters
were below the dental enamel ablation threshold. 60 enamel
samples were used and divided into control group (GC), fluoride
application (GF), laser irradiation (GL), fluoride application
with subsequent laser irradiation (GFL) and laser with subsequent
fluoride application (GLF). A solution containing coal was
used on the enamel surface in order to absorb the laser radiation.
A statistically significant loss of the micro-hardness value was
obtained for all groups except for GL but also this group did not
produce significant micro-hardness increase. Conclusion: at the
current peak power and beam quality of standard diode laser
bars, safe laser parameters do not produce higher micro-hardness
values.
Como referenciar
KOHARA, E.K.; WETTER, N.U.; RATTICHIERI, F.; KATO, I.T. Microhardness of the dental enamel surface after irradiation with 960nm diode laser. Brazilian Dental Journal, v. 15, p. 111-112, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32762. Acesso em: 30 Dec 2025.
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.