Dynamic mechanical properties of dental nanofilled light-cured resin composites: Effect of food-simulating liquids

Vouvoudi, Evangelia C.; Sideridou, Irini D.

doi:10.1016/j.jmbbm.2012.02.007

Cited by 60 publications

(48 citation statements)

References 41 publications

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“…The more the cross link, the more the resistance to compression. These results are similar to what proposed by other researches[29][30][31][32][33]. It is worth noting that soft materials like silicone rubber have viscous behavior and can dissipate energy by flowing and so silicone rubber sample cannot reach to its original thickness after removing pressure.…”

supporting

confidence: 90%

On the Role of Both Polypropylene Fibers and Silica Nanoparticles on the Viscoelastic Behavior of Silicone Rubber Nanocomposites

Ziraki

Zebarjad

Hadianfard

2016

Polymer-Plastics Technology and Engineering

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In the present study, silica nano particles and polypropylene fibers were added to silicone rubber matrix and their effect was investigated on the viscoelastic behavior of silicone rubber composites by Dynamic Mechanical Analysis (DMA) and compression set test.Bonding of the reinforcements with silicone rubber matrix was studied by Fourier Transferred Infrared Radiation. The results proved that the role of silica particles on the elastic modulus of silicone rubber was more effective than that of Polypropylene at room temperature due to higher stiffness and also partial interaction of Polypropylene with matrix.

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confidence: 90%

On the Role of Both Polypropylene Fibers and Silica Nanoparticles on the Viscoelastic Behavior of Silicone Rubber Nanocomposites

Ziraki

Zebarjad

Hadianfard

2016

Polymer-Plastics Technology and Engineering

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“…This behavior creates more volume in the matrix and enhances the movement of the chain segments, thereby resulting in the decrease of the stiffness of the material 83) . A previous study 84) inferred that storage of composites in water and artificial saliva caused plasticization and degradation of the polymer matrix and degradation of the bond between the filler and coupling agent.…”

Section: Tcas In Dental Applicationmentioning

confidence: 99%

Review of titanate coupling agents and their application for dental composite fabrication

Elshereksi

Ghazali

Muchtar

et al. 2017

Dental Materials Journal

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Silane is a dominant coupler that is widely used in dentistry to promote adhesion among the components of dental composites. Silica-based fillers can be easily silanized because of their similarly ordered structure. However, silane is hydrolytically degraded in the aqueous oral environment and inefficiently bonds to non-silica fillers. Thus, the development of hydrolytically stable dental composites is an important objective in the research on dental materials. Titanate coupling agents (TCAs) exhibit satisfactory interfacial bonding, enhanced homogeneous filler dispersion, and improved mechanical properties of the composites. Titanates also provide superior hydrolytic stability in wet environments, which should be considered in fabricating dental composites. The addition of a small amount of titanates can improve the resistance of the composites to moisture. This paper reviews the effects of the instability of silanes in moisture on the performance of dental composites and presents TCAs as alternative couplers to silanes for fabricating dental composites.

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“…None of the materials present any inflection of tan δvalues between 10°C and 55°C, the values progress in a quasi-linear fashion without any modification in the slope (0.97 < R2 < 1.00 for all the materials) (Fig. 1), demonstrating that the glass transition temperature is not reached and that they are capable of tolerating the temperature increases that may occur in the mouth during the intake of food or liquid (13). The progression according to a weaker slope of the tan δ values for GHF and GRF appears to indicate, by extrapolation, a higher maximum use temperature, which is consistent with their lower potential molecular mobility (2).…”

Section: Discussionmentioning

confidence: 99%

“…The tangent of the phase angle δ noted as tan δ is also known as the dissipation factor: this data indicates the vibration damping ability during mechanical deformation. Damping is a dimensionless property and is a measure of how well the material can disperse (absorb or emit) energy (13). In our study, materials BUL and CLI demonstrate a greater damping ability than GHF, GRF and XTE ( Table 3).…”

Section: Discussionmentioning

confidence: 99%

Dynamic thermo-mechanical properties of various flowable resin composites

Jager¹,

Balthazard²,

Vincent³

et al. 2016

J Clin Exp Dent

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BackgroundThis study compared the storage modulus (E’), the loss modulus (E’’) and the loss tangent (tan δ) of various flowable resin composites.Material and MethodsGrandio Flow (GRF), GrandioSo Heavy Flow (GHF), Filtek Supreme XTE (XTE) and Filtek Bulk Fill (BUL) flowable resins and Clinpro Sealant (CLI) ultra-flowable pit and fissure sealant resin were used. 25 samples were tested using a dynamical mechanical thermal analysis system in bending mode. Measurements were taken within a temperature range of 10 to 55°C. The results were statistically analyzed using mixed-effect and repeated-measure analysis of variance followed by paired multiple comparisons.ResultsFor all the materials, the E’ values decrease with temperature, whereas the tan δ values increase. Irrespective of the temperature, GHF and GRF present E’ and E’’ values significantly higher than all the other materials and CLI presents values significantly lower than all the other materials. Observation of the values for all the materials reveals a linear progression of the tan δ values with temperature.ConclusionsA variation in temperature within a physiological range generates modifications in mechanical properties without damaging the material, however. Filler content in volume terms appears to be the crucial parameter in the mechanical behavior of tested materials. Key words:Dynamic mechanical thermal analysis, elastic modulus, filler content, flowable resin composites, loss modulus, loss tangent.

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Dynamic mechanical properties of dental nanofilled light-cured resin composites: Effect of food-simulating liquids

Cited by 60 publications

References 41 publications

On the Role of Both Polypropylene Fibers and Silica Nanoparticles on the Viscoelastic Behavior of Silicone Rubber Nanocomposites

On the Role of Both Polypropylene Fibers and Silica Nanoparticles on the Viscoelastic Behavior of Silicone Rubber Nanocomposites

Review of titanate coupling agents and their application for dental composite fabrication

Dynamic thermo-mechanical properties of various flowable resin composites

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