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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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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
Total Authors: 8
Document type: Journal article
Source: Materials Science & Engineering C-Materials for Biological Applications; v. 73, p. 340-346, APR 1 2017.
Web of Science Citations: 8

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)

FAPESP's process: 13/15518-5 - Analysis of the physical and antimicrobial properties of a resin for brackets cimentation with different concentrations of QAMS
Grantee:Mari Miura Sugii
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
Grantee:Edgar Dutra Zanotto
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC