Removal of laminates with Er,Cr:YSGG laser from dental enamel submitted to gamma radiation
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Photobiomodulation, Photomedicine, and Laser Surgery
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Background: Modern Dentistry is characterized by the search for
aesthetic perfection in the smile. Many efforts are made regarding
procedures related to manufacturing, cementing, maintenance and
removal of ceramic laminates. The laser removal of laminates has
become more frequent when the aesthetical procedures needs to
be replaced. On the other hand, the head and neck cancer treatment
causes comorbidities in the buccal environment when laminates
are in place.
Objective: To evaluate in vitro the removal of ceramic fragments
by means of Er,Cr:YSGG laser irradiation, after gamma
radiation.
Methods: 20 Lithium disilicate veneers were cemented with
Variolink to human dental enamel and then samples were irradiated
with 0.07 kGy. After gamma irradiation, the laminates removal
with Er,Cr:YSGG laser was performed. The control group
was not subjected to gamma radiation. Dental enamel samples were
analyzed by Scanning Electron Microscopy (SEM), Fourier
Transformed Infrared Spectroscopy (FTIR) and Surface Microhardness
Loss (SMH). Results: SEM has shown that less cement
was found after removal of the facets in gamma irradiated group
when compared to the control. For both groups there was alteration
of the SMH possibly due to the use of the adhesive system. When
performed intra group analysis, the sample being its own control of
baseline in the FTIR analysis, there were no band shifts or formation
of new compounds on the surface of human dental enamel.
Conclusions: The Er,Cr:YSGG laser is an effective alternative
for laminates removal in human dental enamel even when it is
subjected to gamma radiation.
Como referenciar
RABELO, THAIS F.; ZAMATARO, CLAUDIA B.; ZANINI, NATHALIA; JUVINO, AMANDA C.; KUCHAR, NIELSEN G.; CASTRO, PEDRO A.A.; ZEZELL, DENISE M. Removal of laminates with Er,Cr:YSGG laser from dental enamel submitted to gamma radiation. Photobiomodulation, Photomedicine, and Laser Surgery, v. 37, n. 10, p. A21-A21, 2019. DOI: 10.1089/photob.2019.29013.abstracts. Disponível em: http://repositorio.ipen.br/handle/123456789/32223. Acesso em: 31 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.