Enhanced mechanical properties, anti-biofilm activity, and cytocompatibility of a methacrylate-based polymer loaded with native multiwalled carbon nanotubes

Rodrigues, Ricardo Antonio Alpino; Silva, Rosangela Maria Ferreira da Costa e; Ferreira, Luiza de Almeida Queiroz; Branco, Natália Tavares Teixeira; Ávila, Erick de Souza; Peres, Anderson M.; Fernandes‐Braga, Weslley; Sette-Dias, Augusto César; Andrade, Ângela Leão; Palma‐Dibb, Regina Guenka; Magalhães, Cláudia Silami de; Ladeira, Luiz Orlando; Silveira, Rodrigo Richard da; Moreira, Allyson Nogueira; Martins‐Júnior, Paulo Antônio; Yamauti, Mónica; Diniz, Ivana Márcia Alves

doi:10.1016/j.jmbbm.2022.105511

Cited by 1 publication

(1 citation statement)

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“…In this sense, the improvement of composite resins improved the mechanical properties, increasing the resistance to abrasion and compression of these materials, as well as a low polymerization contraction [2,3]. A crucial factor to ensure the quality of the restorative procedure is the degree of conversion of the composite resins, which can be influenced by the characteristics of the composites, such as the chemical composition of the matrix, photoinitiator concentration, type, size, and quantity of filler particles, color, and degree of translucency/opacity and by factors related to the activation light [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Main approaches of biofilm formation in composite resins: a concise systematic review

Oliveira¹,

Perelli²,

Costa³

et al. 2023

MedNEXT

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Introduction: Composite resins are widely used in clinical dental practice to restore the structure lost by caries and dental defects, achieving aesthetic and functional results. Failures in the photoactivation process can cause problems in the mechanical resistance to wear in regions of direct occlusal contact on the restorative material. This occurs due to the reduction in the degree of conversion of monomers into polymers, compromising the clinical performance of the composite resin. Polymerization shrinkage leads to microleakage of the restoration, leading to staining and the development of bacterial biofilms. Objective: It was to carry out a systematic review of the main scientific evidence of biofilm formation on composite resin veneers, identifying potential predictors, as well as proposals to mitigate this problem. Methods: The systematic review rules of the PRISMA Platform were followed. The search was carried out from December 2022 to March 2023 in the Scopus, PubMed, Science Direct, Scielo, and Google Scholar databases, using articles from 2015 to 2022. The quality of the studies was based on the GRADE instrument and the risk of bias was analyzed accordingly, according to the Cochrane instrument. Results and Conclusion: A total of 125 articles were found, 25 articles were evaluated and 20 were included and developed in this systematic review study. Considering the Cochrane tool for risk of bias, the overall assessment resulted in 10 studies with a high risk of bias and 70 studies that did not meet GRADE. It was concluded that the surface properties of resin-based composite materials, as well as surface treatments, can strongly affect bacterial adhesion and biofilm formation. In addition, scientific evidence highlights that cariogenic biofilm formation can alter the surface properties of materials, thus stimulating bacterial adhesion and biofilm formation. Photoactivation allows the curing and crosslinking of polymer chains, essential for the clinical longevity of the composite resin. Insufficient photoactivation culminates in marginal microleakage in restorations and biofilm accumulation on surfaces exposed to the oral environment.

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