Investigation on the physical–mechanical properties of dental resin composites reinforced with novel bimodal silica nanostructures

Wang, Ruili; Zhang, Maolin; Liu, Fengwei; Bao, Shuang; Wu, Tiantian; Jiang, Xiangqian; Zhang, Qinghong; Zhu, Meifang

doi:10.1016/j.msec.2015.01.090

Cited by 67 publications

(63 citation statements)

References 40 publications

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“…With a similar objective as surface‐porous fillers, sintered porous fillers called “nanoclusters” were first introduced in the commercial Filtek Supreme Universal Restorative (3M ESPE, USA) in 2003 to develop dental composites with superior strength and aesthetics. Nanoclusters can be defined as an association of individually dispersed nanoparticles such as SiO 2 and ZrO 2 and their agglomerations, which were prepared by sintering and covalent coupling in consideration of the scalability of the processes for dental applications. The manufacturers of Filtek Supreme Universal Restorative obtained silica nanoclusters by the sintering process with a bottom‐up approach.…”

Section: Modification Technologies To Improve the Matrix/filler Intermentioning

confidence: 99%

“…Another method for the synthesis of silica nanoclusters was developed by Wang et al. through a coupling reaction between amine‐ and epoxy‐functionalized silica nanoparticles at room temperature ( Figure 23 A), and the morphology of these nanoclusters is shown in Figure B–D) . Bimodal silica nanostructures consisting of silica nanoparticles and nanoclusters were constructed to reinforce dental composites.…”

Section: Modification Technologies To Improve the Matrix/filler Intermentioning

confidence: 99%

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Dental Restorative Resin Composites: Modification Technologies for the Matrix/Filler Interface

Chen

Wang

et al. 2018

Macro Materials & Eng

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Dental restorative resin composites are a pivotal class of organic/inorganic hybrid materials. The main reasons for their failure are secondary caries and dental composite fractures, which prevent their long‐term service in posterior restorations. A remedy to these problems is improving the interfacial adhesion between the resin matrix and the fillers. Surface‐modified inorganic fillers show strong potential as more than just a bond between these two phases and can therefore be considered a medium to compensate for the deficits of dental composites. This paper mainly discusses strategies to improve the interfacial adhesion of dental composites, including surface treatments of fillers with coupling agents, polymers, and tetraethyl orthosilicate (TEOS) coatings, as well as the selection of porous fillers capable of micromechanical resin matrix/filler interlocking. Additionally, the existing deficiencies of these strategies and the prospects for dental composites are discussed.

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Section: Modification Technologies To Improve the Matrix/filler Intermentioning

confidence: 99%

Section: Modification Technologies To Improve the Matrix/filler Intermentioning

confidence: 99%

Dental Restorative Resin Composites: Modification Technologies for the Matrix/Filler Interface

Chen

Wang

et al. 2018

Macro Materials & Eng

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“…ere are reports that indicate that nanoclusters, in spite of having bigger particle size than individual nanoparticles, allow materials to be obtained with improved surface properties such as better gloss, polish, and wear resistance [5,6,[22][23][24]. Nanoclusters are nanoparticle aggregates with controlled size and morphology, obtained prior to the dispersion process in the resin [25][26][27]. One of the methodologies used to obtain these aggregates is spray drying using nanoparticle dispersions [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Effects of Silica Nanoparticles and Silica-Zirconia Nanoclusters on Tribological Properties of Dental Resin Composites

Rodríguez

Casanova

2018

Journal of Nanotechnology

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Roughness and hardness are among the most important variables in the wear (resistance) performance of dental resin composites. In this study, silica nanoparticles and nanoclusters of silica and silica-zirconia nanoparticles were evaluated for use as reinforcement agents in dental resin composites. Nanoclusters with spherical morphology were obtained from aqueous dispersions of nanoparticles by spray drying. Roughness was measured through atomic force microscopy (AFM) while nanohardness was evaluated by nanoindentation. The roughness values obtained with silica nanoparticles were lower (22.6 ± 6.6 nm) than those obtained with silica and silica-zirconia nanoclusters (138.1 ± 36.6 nm, 116.2 ± 32.2 nm, resp.), while the hardness values of all composites were similar (nanoparticles = 0.24 ± 0.01 GPa, silica nanoclusters = 0.25 ± 0.04 GPa, and silica-zirconia nanoclusters = 0.22 ± 0.02 GPa). Based on this study, it can be established that particle size is a determining factor in the roughness of the final material, while the key variable for nanohardness was the concentration of the reinforcement materials.

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“…The inorganic fillers play critical roles in determining mechanical, chemical, and biological properties of the final restorations ; therefore, features such as filler content, size, and composition have been widely considered and studied in the literature. For example, Hosseinalipour et al investigated the mechanical properties of Bis‐GMA/TEGDMA dental resin composites with various high mass fractions (20–50 wt%) of silica nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Nanoindentation study on mechanical properties and curing depth of dental resin nanocomposites

Zha

et al. 2018

Polymer Composites

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Mechanical properties and curing depth of bisphenol‐α‐glycidyl methacrylate/triethylene glycol dimethacrylate‐based dental composites were systematically investigated by site‐specific nanoindentation tests. Effects of filler (20‐nm silica nanoparticle) content on the nanohardness and elastic modulus of the composites were studied in comparison with micromechanics theoretical models. Results showed that the incorporation of the silica nanoparticles at low contents (up to 5.66 vol%) significantly increases the hardness and elastic modulus of the dental composites by up to 65% and 30%, respectively. It was found that the Counto model gave good predictions for the composite modulus as a function of filler content. For the specific composites studied here, the depth of cure increases approximately linearly with the filler content, which may be ascribed to the stronger reinforcement effect of the silica nanoparticles on the dental composites at a higher particle content. These results combined demonstrate the effectiveness of silica nanoparticles as the reinforcement for dental restorative materials even at small volume fractions. POLYM. COMPOS., 40:1473–1480, 2019. © 2018 Society of Plastics Engineers

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Investigation on the physical–mechanical properties of dental resin composites reinforced with novel bimodal silica nanostructures

Cited by 67 publications

References 40 publications

Dental Restorative Resin Composites: Modification Technologies for the Matrix/Filler Interface

Dental Restorative Resin Composites: Modification Technologies for the Matrix/Filler Interface

Effects of Silica Nanoparticles and Silica-Zirconia Nanoclusters on Tribological Properties of Dental Resin Composites

Nanoindentation study on mechanical properties and curing depth of dental resin nanocomposites

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