Physical, chemical and antimicrobial evaluation of a composite material containing quaternary ammonium salt for braces cementation

Autor(es)

Sugii, Mari Miura ; de Souza Ferreira, Fabio Augusto ; Mueller, Karma Cogo ; Nunes Leite Lima, Debora Alves ; Groppo, Francisco Carlos ; Imasato, Hidetake ; Rodrigues-Filho, Ubirajara Pereira ; Baggio Aguiar, Flavio Henrique

• Tipo de documento: Artigo Científico
• Fonte: Materials Science & Engineering C-Materials for Biological Applications; v. 73, p. 340-346, APR 1 2017.
• Citações Web of Science: 8

Resumo

The antibiofilm effect of iodide quaternary ammonium methacryloxy silicate (IQAMS) in Transbond XT Light Cure Adhesive resin used for braces cementation was evaluated. Fourier Transform Infrared (FDA) spectroscopy confirmed IQAMS formation and Scanning Electron Microscopy coupled to Energy-Dispersive X-ray Spectroscopy (SEM-EDS) revealed that as coating, the quaternary ammonium groups from IQAMS were homogeneously dispersed throughout the surface. When incorporated, the composite material presented homogeneous dispersion throughout the resin. Assays with Streptococcus mutans demonstrated enhanced antibiofilm effect for the IQAMS coated resin, with much lower colony-forming units (CFU), in comparison to incorporated IQAMS. Such a difference was assigned to low availability of quaternary ammonium groups at the surface of resin when IQAMS was incorporated, hindering its antibiofilm effect. Additionally, the incorporation of IQAMS led to slight decrease in ultimate bond strength CUBS) and shear bond strength (SBS), in comparison to the neat commercial resin. Thus, the synthesized IQAMS displays great potential as antibiofilm coating or sealant to prevent oral infections in brackets during orthodontic treatment. (C) 2016 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/15518-5 - Análise das propriedades físicas e antimicrobianas da resina para fixação de braquetes com diferentes concentrações de QAMS
• Beneficiário: Mari Miura Sugii
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
• Beneficiário: Edgar Dutra Zanotto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs