Progression of erosive lesions after Nd:YAG laser and fluoride using optical coherence tomography
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2017
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Lasers in Medical Science
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Resumo
This study aimed to use optical coherence tomography
(OCT) to assess the progression of erosive lesions after
irradiation with Nd:YAG laser and application of topical fluoride.
One-hundred and twenty dentin samples (4 × 4 × 2 mm)
obtained from bovine incisors were used. Samples were
protected with acid-resistant nail varnish, with exception of a
central circular area 2 mm in diameter. All samples were submitted
to erosive cycles with citric acid solution 0.05M(citric
acid monohydrate—C6H8O7·H2O); M= 210.14 g/mol) pH
2.3, at room temperature, for 20 min, 2×/day, throughout
20 days. After 10 days of acid challenges, lesions became
visible, and each group received a different treatment (n =
15): control (without treatment), topical application of sodium
fluoride 2 % for 4 min; Nd:YAG laser with different irradiation
parameters (1, 0.7, and 0.5 W); and the association of
fluoride with the laser parameters. OCT readouts were performed
on day 01 (before the first acid challenge—OCT1),
on day 05 (OCT2), day 10 (OCT3—after treatment), day 15
(OCT4), day 17 (OCT5), and day 20 (OCT6). The OCT images
generated made it possible to measure the amount of
tooth tissue loss over the 20 days of erosive cycle, before
and after treatments, and to monitor early dentin demineralization
progression. After statistical analysis, the fluoride
group was observed to be the one that showed smaller loss
of tissue over time. The OCT technique is promising for diagnosing
and monitoring erosive lesion damage; however,
further in vitro and in vivo research is needed to improve its
use.
Como referenciar
MORAES, MARCIA C.D. de; FREITAS, ANDERSON Z.; ARANHA, ANA C.C. Progression of erosive lesions after Nd:YAG laser and fluoride using optical coherence tomography. Lasers in Medical Science, 2017. DOI: 10.1007/s10103-016-2075-8. Disponível em: http://repositorio.ipen.br/handle/123456789/27001. Acesso em: 18 Apr 2024.
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.