Effects of Er, Cr:YSGG Laser irradiation on endodontics system permeability
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Brazilian Dental Journal
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The aim of this study was to evaluate the effects of Er,Cr:YSGG
laser irradiation on root dentin permeability. Twenty extracted
single-rooted teeth were instrumented with K-files and divided in
four groups, according to laser fluences: GI (non-irradiated), GII
(12.5 mJ/pulse; 2.8 J/cm2), GIII (25 mJ/pulse; 8.5 J/cm2) and
GIV (75 mJ/pulse; 16.98 J/cm2). Lased groups had an association
of irrigating solution EDTA-T and Er,Cr:YSGG laser irradiation,
which was performed at 20 Hz repetition rate without airwater
spray, with four helicoidal movements during approximately
5 seconds. NDP associated with rhodamine B dye was
used to evaluate dentin permeability. After the experimental period,
the samples were transversely cut into six 2.0 mm thick slices
for subsequent reading using the ImageLab software. The results
showed that dentin permeability of root canals was decreased
when exposed to Er,Cr:YSGG laser irradiation compared with
non-irradiated samples, and this alteration was higher when higher
fluences were applied. The cervical and middle thirds had permeability
values statistically similar (p > 0.05) and significantly
greater than the apical third. It can be concluded that the use of
Er,Cr:YSGG laser irradiation at the utilized parameters decreases
dentin permeability, favoring the root canal sealing.
Como referenciar
ANA, P.A.; ROCHA, R.M.M.; BLAY, A.; AUN, C.E.; LAGE-MARQUES, J.L.; ZEZELL, D.M. Effects of Er, Cr:YSGG Laser irradiation on endodontics system permeability. Brazilian Dental Journal, v. 15, p. 99-99, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32745. 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.