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Morphological, optical, and elemental analysis of dental enamel after debonding laminate veneer with Er,Cr:YSGG laser: A pilot study.
Zanini, Nathalia A; Rabelo, Thais F; Zamataro, Claudia B; Caramel-Juvino, Amanda; Ana, Patrícia A; Zezell, Denise M.
Afiliação
  • Zanini NA; Nuclear and Energy Research Institute (IPEN-CNEN/SP), Center for Lasers and Applications, São Paulo, SP, Brazil.
  • Rabelo TF; Nuclear and Energy Research Institute (IPEN-CNEN/SP), Center for Lasers and Applications, São Paulo, SP, Brazil.
  • Zamataro CB; Nuclear and Energy Research Institute (IPEN-CNEN/SP), Center for Lasers and Applications, São Paulo, SP, Brazil.
  • Caramel-Juvino A; Nuclear and Energy Research Institute (IPEN-CNEN/SP), Center for Lasers and Applications, São Paulo, SP, Brazil.
  • Ana PA; Federal University of ABC (UFABC), Center for Engineering, Modelling and Applied Social Sciences (CECS), São Bernardo do Campo, SP, Brazil.
  • Zezell DM; Nuclear and Energy Research Institute (IPEN-CNEN/SP), Center for Lasers and Applications, São Paulo, SP, Brazil.
Microsc Res Tech ; 84(3): 489-498, 2021 Mar.
Article em En | MEDLINE | ID: mdl-32978851
Laminate veneer removal is becoming a routine procedure at the dental clinic and the use of laser can facilitate its removal. This work aimed to evaluate the morphological, elemental, and optical changes in the remaining enamel after veneer removal using Er,Cr:YSGG laser. Forty-four enamel slabs were prepared and randomly distributed into nine experimental groups, for bonding using lithium disilicate laminates with three different luting agents (Variolink Veneer, RelyX U200, and RelyX Veneer). Then each agent was debonded using Er,Cr:YSGG laser (2.78 µm) using two different protocols:3.5 W, 48.14 J/cm2 , 20 Hz non-contact and 3.0 W, 48.14 J/cm2 , 20 Hz non-contact. The morphological, optical, and elemental analysis of enamel was performed before cementation and after laser debonding, using scanning electron microscopy (SEM), optical coherence tomography (OCT), and energy-dispersive X-ray spectroscopy (EDS). The level of statistical significance adopted was 5%. The EDS analysis of enamel after debonding revealed a significant increase in silane and carbon, as well as a decrease in calcium and phosphate contents. Analysis showed the presence of residual cement in most experimental groups but the morphological analysis showed alteration of the enamel's prisms only in the groups that used RelyX Veneer and Variolink Veneer cements. There was no evidence of deleterious morphological changes resulting from irradiation. However, an increase in the optical attenuation coefficient by the OCT was observed due to the presence of the remaining cement. It can be concluded that the Er,Cr:YSGG laser, in the mean powers used, is efficient for veneer removal without causing deleterious effects for the enamel.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Colagem Dentária / Lasers de Estado Sólido Tipo de estudo: Guideline / Observational_studies Idioma: En Revista: Microsc Res Tech Assunto da revista: DIAGNOSTICO POR IMAGEM Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
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XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Colagem Dentária / Lasers de Estado Sólido Tipo de estudo: Guideline / Observational_studies Idioma: En Revista: Microsc Res Tech Assunto da revista: DIAGNOSTICO POR IMAGEM Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos