Effect of the amount of 3-methacyloxypropyltrimethoxysilane coupling agent on physical properties of dental resin nanocomposites

Sideridou, Irini D.; Karabela, Maria M.

doi:10.1016/j.dental.2009.03.016

Cited by 187 publications

(186 citation statements)

References 33 publications

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“…Although one end of the 3-MPTS molecule copolymerizes with the resin matrix, the addition of 1% and 3% silane to the fillers did not significantly affect the DC, in agreement with the existing literature. 15 This means that the number of vinyl groups from 3-MPTS incorporated into the matrix network is relatively small in relation to the number of carbon double bonds from the matrix monomers.…”

Section: Discussionmentioning

confidence: 99%

“…12,13,14,15,16,17 The silane interphase is most commonly composed of the 3-MPTS (γ-3-methacryloxypropyltrimethoxysilane) monomer, a bifunctional molecule capable of both polymerizing with the organic resin matrix and establishing a covalent oxane bond (Si-O-Si) with the surface of the filler particles. 13,17,18 Many studies have researched the influence of the silane interphase on the properties of resin composites; 12,13,14,15,16 however, the data reported in the literature are very controversial, with some studies indicating no significant differences in the various static mechanical properties 14,15,18 Declaration of Interests: The authors certify that they have no commercial or associative interest that represents a conflict of interest in connection with the manuscript. or in the hydrolytic stability 18 of composites with a wide range of silane concentrations.…”

Section: Introductionmentioning

confidence: 99%

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Influence of silane content and filler distribution on chemical-mechanical properties of resin composites

et al. 2015

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This study investigated the influence of silane concentration and filler size distribution on the chemical-mechanical properties of experimental composites. Experimental composites with silane contents of 0%, 1% and 3% (in relation to filler mass) and composites with mixtures of barium glass particles (median size = 0.4, 1 and 2 μm) and nanometric silica were prepared for silane and filler analyses, respectively. The degree of conversion (DC) was analyzed by FTIR. Biaxial flexural strength (BFS) was tested after 24-h or 90-d storage in water, and fracture toughness, after 24 h. The data were subjected to ANOVA and Tukey's test (p = 0.05). The DC was not significantly affected by the silane content or filler distribution. The 0% silane group had the lowest immediate BFS, and the 90-d storage time reduced the strength of the 0% and 3% groups. BFS was not affected by filler distribution, and aging decreased the BFS of all the groups. Silanization increased the fracture toughness of both the 1% and 3% groups, similarly. Significantly higher fracture toughness was observed for mixtures with 2 μm glass particles. Based on the results, 3% silane content boosted the initial strength, but was more prone to degradation after water storage. Variations in the filler distribution did not affect BFS, but fracture toughness was significantly improved by increasing the filler size.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of silane content and filler distribution on chemical-mechanical properties of resin composites

et al. 2015

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“…A silanização do conteúdo inorgânico promove melhores propriedades mecânicas, tais como resistência à flexão e à tração, tenacidade à fratura e módulo de elasticidade 33,34 . Além disso, a presença do agente de união silano parece reduzir a degradação por hidrólise, evitando a penetração de água na interface carga / matriz, quando comparado com compósitos formulados sem o uso do silano 35 . Esse fato pode ser atribuído à união química promovida pelo silano entre partículas de carga inorgânica com a matriz orgânica 36 .…”

Section: Agente De União -Silanounclassified

“…Esse fato pode ser atribuído à união química promovida pelo silano entre partículas de carga inorgânica com a matriz orgânica 36 . 35 .…”

Section: Agente De União -Silanounclassified

“…Em contrapartida, o agente OTMS (Figura 2) é um silano alifático não reativo com a matriz orgâni-ca e que interage quimicamente por meio de fracas forças de Van der Walls 1,35 . A porção orgânica presente no agente OTMS diferencia-se do MPTS, de forma a não reagir por meio de ligações covalentes com a matriz orgânica durante o processo de polimerização do material 34 .…”

Section: Figura 1 -Silano Mptsunclassified

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Silanização de partículas de carga de compósitos odontológicos – revisão de literatura

Cavalcante

De²,

Mariel³

et al. 2014

Rev. da Fac. de Odontologia, UPF

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Objetivo: o presente trabalho teve como objetivo realizar uma revisão de literatura com a intenção de simplificar o entendimento a respeito da importância do tipo aos tipos de silanos MPTS (γ-metacrilioxipropil trimetoxisilano), OTMS (n-octiltrimetoxisilano), UDMS (3-[(1,3(2)-dimetacriloiloxipropil)-2(3)-oxicarbonillamido]propiltrietoxisilano), GPS (γ-glicidoxipropil trimetoxisilano) e ATES (organosilanos allitrietoxisilano), efeitos das suas aplicações e dos IntroduçãoCompósitos odontológicos são amplamente empregados como materiais restauradores diretos na clínica odontológica. Com uma notável propriedade mecânica e uma excelente característica estética, as resinas atuais são capazes de mimetizar propriedades singulares, dos dentes como cor, brilho e textura; entretanto o meio bucal ainda é adverso para a longevidade das restaurações. Interferências químicas, térmicas e mecânicas, atuando em diversas combinações, exercem papel fundamental no processo de degradação intraoral ao qual esses materiais restauradores são submetidos. Alterações na textura superficial e diminuição das propriedades físicas ao longo do tempo, causadas pelos processos de desgaste e de hidrólise no meio oral são fatores que indicam a necessidade do desenvolvimento de compósi-tos odontológicos com propriedades melhoradas e, consequentemente, mais duráveis. Visto isso, novos compósitos são frequentemente estudados e aperfeiçoados, tentando diminuir ou até mesmo cessar tais interferências nocivas do ambiente oral.

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Forming Covalent Crosslinks between Polymer‐Grafted Nanoparticles as a Route to Highly Filled and Mechanically Robust Nanocomposites

Kubiak

Macfarlane

2019

Adv Funct Materials

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Filler aggregation in polymer matrix nanocomposites leads to inhomogeneity in particle distribution and deterioration of mechanical properties. The use of polymer grafted nanoparticles (PGNPs) with polymers directly attached to the particle surfaces precludes aggregation of the filler. However, solids composed of PGNPs are mechanically weak unless the grafted chains are long enough to form entanglements between particles, and requiring long grafts limits the achievable filler density of the nanocomposite. In this work, long, entangled grafts are replaced with short reactive polymers that form covalent crosslinks between particles. Crosslinkable PGNPs, referred to as XNPs, can be easily processed from solution and subsequently cured to yield a highly filled yet mechanically robust composite. In this specific instance, silica nanoparticles are grafted with poly(glycidyl methacrylate), cast into films, and crosslinked with multifunctional amines at elevated temperatures. Indentation and scratch experiments show significant enhancement of hardness, modulus, and scratch resistance compared to non-crosslinked PGNPs and to crosslinked polymer films without nanoparticle reinforcement. Loadings of up to 57 wt% are achieved while yielding uniform films that deform locally in a predominantly elastic manner. XNPs therefore potentially allow for the formulation of robust nanocomposites with a high level of functionality imparted by the selected filler particles.

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Effect of the amount of 3-methacyloxypropyltrimethoxysilane coupling agent on physical properties of dental resin nanocomposites

Cited by 187 publications

References 33 publications

Influence of silane content and filler distribution on chemical-mechanical properties of resin composites

Influence of silane content and filler distribution on chemical-mechanical properties of resin composites

Silanização de partículas de carga de compósitos odontológicos – revisão de literatura

Forming Covalent Crosslinks between Polymer‐Grafted Nanoparticles as a Route to Highly Filled and Mechanically Robust Nanocomposites

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