"In vitro" evaluation of morphologic changes on the root dentine irradiated by CO2 laser associated or not to calcium hydroxide
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Brazilian Dental Journal
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This in vitro study has evaluated the structural changes on the
root dentine irradiated by a CO2 laser associated or not to calcium
hydroxide - an alternative method for dentine hypersensitivity
treatment. Fourteen human teeth 3rd molars were utilized,
divided into 7 groups. Group I (control group),Groups II, III
and IV received an application of Ca (OH)2 paste followed by
CO2 laser irradiation for 5 seconds, intervals of 10 seconds, continuous
emission, power of 0.5W, constant distance of 30mm
(Group II), 1.0W (Group III), 1.5W (Group IV); Groups V, VI,
VII received laser irradiations following the same parameters
applied to groups II, III, and IV. Morphologic changes suggesting
to fusion and re-solidification were observed, and the presence of
material obstructing the whole analyzed surface on groups II, III,
and IV. For groups V, VI, and VII, fusion, re-solidification, and
cracks, were observed, results statistically significant (P<0,01).
No statistically significant differences were observed in groups
that used the same treatment. Powers above 1.0W (DP=125,38W/cm2) showed carbonization and dark surface, results
unfavorable due to the undesirable morphologic alterations and
aesthetic compromising.
Como referenciar
CAMARGO, A.; BALDOCHI, S.; CAMARGO, S.; EDUARDO, C.P. "In vitro" evaluation of morphologic changes on the root dentine irradiated by CO2 laser associated or not to calcium hydroxide. Brazilian Dental Journal, v. 15, p. 102-103, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32761. 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.