Effects of 960nm diode laser irradiation and fluoride on calcium solubility of dental enamel in vitro
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Brazilian Dental Journal
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The aim of this study is to determine the effects of diode laser
(?=960 nm) irradiation on calcium solubility of dental enamel.
Sixty enamel specimens were prepared from human teeth and
divided into four groups (control, fluoride, laser and fluoride plus
laser). Prior to the irradiation a vegetable coal diluted in physiological
solution was applied to the enamel surface and the specimens
were irradiated using 6,5 W of peak power, 5 ms of pulse
duration, 10 Hz of repetition rate, fluency of 3,7 J/cm2 and time
exposure of 10 seconds. The acidulated phosphate fluoride was
applied for 4 minutes. Next, the specimens were immersed in lactic
acid for 24 hours at 37 °C. The calcium content in demineralization
solution was evaluated with Inductively Coupled Plasma
Atomic Emission Spectrometry. The results indicate an increase in calcium solubility (12%) after laser irradiation, however, not
statistically significant. When associated with fluoride, the
decrease in calcium solubility did not differ from the results
obtained with fluoride only. It can be concluded that in this experiment
diode laser irradiation did not increase acid resistance of
dental enamel.
Como referenciar
KOHARA, E.K.; KATO, I.T.; WETTER, N.U. Effects of 960nm diode laser irradiation and fluoride on calcium solubility of dental enamel in vitro. Brazilian Dental Journal, v. 15, p. 112-112, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32763. 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.