Nanocomposites obtained by incorporation of silanized silver nanowires to improve mechanical properties and prevent fungal adhesion

Menezes, Beatriz Rossi Canuto de; Sampaio, Aline da Graça; Silva, Diego Morais da; Montagna, Larissa Stieven; Montanheiro, Thaís Larissa do Amaral; Koga-Ito, Cristiane Yumi; Thim, Gilmar Patrocínio

doi:10.1002/nano.202100095

Cited by 3 publications

(2 citation statements)

References 62 publications

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“…Although the reduction was not statistically significant, there was a 64% reduction in the CFU/specimen count between CG and G1. In another study, a reduction of about 50% in the biofilm formation was observed for the nanocomposites with incorporation of silver nanowires [ 61 ]. Li et al [ 62 ] found that there was a biomass percentage reduction of C. albicans with the use of a AgNPs suspension on a denture base made of acrylic resin.…”

Section: Discussionmentioning

confidence: 99%

Silver-Coated Silica Nanoparticles Modified with MPS: Potential Antimicrobial Biomaterials Applied in Glaze and Soft Reliner

Rossi

Menezes²,

Sampaio³

et al. 2022

Polymers

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Soft reliner and glaze are materials used over full or partial dental prosthesis to prevent excessive pressure on the supporting tissues. They are also indicated as supportive treatment for dental stomatitis, especially when modified by the addition of medications. The objective of the work was to evaluate the antimicrobial effect of silver-coated silica nanoparticles in a glaze and a soft reliner. The nanoparticles were synthesized, characterized, and tested by minimum inhibitory concentration (MIC) for C. albicans SC5314. Then, the nanoparticles were incorporated to a glaze and a soft reliner, which were called nanocomposites. Then, the nanocomposites were divided into six groups (n = 12): CG: glaze/reliner; CR: reliner; G1: glaze + 1% nanoparticles/reliner; G2: glaze + 2.5% nanoparticles/reliner; R1: reliner + 1%; R2: reliner + 2.5%. The nanocomposites were characterized by a goniometer and by a scanning electron microscope. The antibiofilm test was performed against C. albicans SC5314. According to the MIC results, the non-functionalized nanoparticles reduced fungal growth at 1000 μg/mL and the functionalized nanoparticles at 2000 μg/mL. The functionalized nanoparticle had a superior dispersion being selected for the antibiofilm test. There was a reduction of 64% in CFU/specimen count for the glaze, not statistically significant (p = 0.244). For the soft reliner, there was an increase in CFU/specimen with the presence of nanoparticles, still not statistically significant (p = 0.264). In conclusion, it is necessary to conduct new studies to increase the release of silver, thus improving nanoparticles’ antifungal potential.

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Section: Discussionmentioning

confidence: 99%

Silver-Coated Silica Nanoparticles Modified with MPS: Potential Antimicrobial Biomaterials Applied in Glaze and Soft Reliner

Rossi

Menezes²,

Sampaio³

et al. 2022

Polymers

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“…By combining the AgNWs conductive thin films with the substrate, a gate-shaped sensitive structure is generated. This approach aims to minimize the lateral effects experienced by the strain sensor [8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Resistive micro/nano flexible sensitive sensing based on silver nanowires and polydimethylsiloxane layering

sun,

Liu

2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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A flexible sensor refers to a type of sensor that possesses the ability to be bent and stretched. Typically composed of soft materials, these sensors demonstrate high deformability and adaptability. They are capable of conforming to complex shapes and surfaces, enabling the measurement of various physical quantities. The application prospects of flexible sensors are vast, encompassing fields such as biomedical sensing, health monitoring, virtual reality, and intelligent wearable devices. Micro and nano flexible sensors are commonly fabricated using techniques like inkjet printing or screen printing. However, these methods often necessitate the incorporation of sensitive materials into viscous substances, resulting in reduced sensor sensitivity. In order to concurrently meet the requirements for conductivity and structural integrity of the sensor's sensitive materials, a novel micro/nano flexible sensor was developed employing silver nanowires (AgNWs) and polydimethylsiloxane (PDMS). By selectively filtering silver nanowires, sensitive films are formed, and the structure of the sensitive materials is achieved by patterning the PDMS substrate. This approach effectively mitigates lateral effects while ensuring sensor sensitivity. The sensor exhibits the capability to detect deformations ranging from 0~5‰, with a minimum resolution of 0.1N for pressure detection. Additionally, it displays unidirectional strain sensitivity and possesses self-recovery characteristics.

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Hydroxyapatite modified with polyhedral oligomeric silsesquioxane as a filler for dental resin-based composites

Buchwald,

Voelkel

2024

Journal of Materials Research

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Hydroxyapatite modified with methacrylate groups-bearing polyhedral oligomeric silsesquioxane was for the first time applied as a filler in the experimental composite for dental applications. As the modifier changed the hydroxyapatite surface from hydrophilic to hydrophobic, it was predicted that the stability of the obtained composites would be improved in comparison with raw hydroxyapatite-filled composites. The stability in the oral imitating environment, basic physicochemical properties, and remineralizing potential understood as the ability to release calcium ions, were examined. The distribution of the fillers in the organic matrix, composites’ degree of conversion, depth of cure, flexural and compressive strengths, sorption, and solubility after 2 and 12 weeks of incubation, and the concentrations of calcium released were examined. The results were subjected to statistical analysis. The filler modification resulted in the improvement of the composites’ mass stability during long-term incubation with simultaneous beneficial more balanced calcium release profiles and comparable physicochemical properties. Graphical abstract

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Nanocomposites obtained by incorporation of silanized silver nanowires to improve mechanical properties and prevent fungal adhesion

Cited by 3 publications

References 62 publications

Silver-Coated Silica Nanoparticles Modified with MPS: Potential Antimicrobial Biomaterials Applied in Glaze and Soft Reliner

Silver-Coated Silica Nanoparticles Modified with MPS: Potential Antimicrobial Biomaterials Applied in Glaze and Soft Reliner

Resistive micro/nano flexible sensitive sensing based on silver nanowires and polydimethylsiloxane layering

Hydroxyapatite modified with polyhedral oligomeric silsesquioxane as a filler for dental resin-based composites

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