Improved performance of Bis-GMA/TEGDMA dental composites by net-like structures formed from SiO 2 nanofiber fillers

Wang, Xiaoyan; Cai, Qing; Zhang, Xuehui; Wei, Yan; Xu, Mingming; Yang, Xiaoping; Ma, Qi; Cheng, Yali; Deng, Xuliang

doi:10.1016/j.msec.2015.10.044

Cited by 64 publications

(52 citation statements)

References 35 publications

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“…In agreement with our findings, Wang et al [58] , though using inorganic nanofibers (SiO 2 nanofibers) to reinforce a resin-composite based on Bis-GMA/ TEGDMA, reported an effective reduction in the polymerization shrinkage compared to the SiO 2 nanoparticles as well as the SiO 2 microparticles. In addition, Garoushi et al [52] reported an improvement in the polymerization shrinkage stress upon using E-glass short fiber fillers for reinforcement of an experimental resin-composite.…”

Section: Discussionsupporting

confidence: 93%

“…Opposite to our findings, when SiO 2 (inorganic) nanofibers were used in experimental resin-composite, they showed an enhanced wear resistance. Authors [58] attributed this improvement to the ability of incorporated inorganic nanofibers to cover other micro/nano-sized particulate fillers preventing their dislodgement during wearing cycles. In our study, however, as the reinforcing nanofibers are organic in nature, they worn away more easily compared to the inorganic filler particles in the control group.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Synthesized Bis-GMA and UDMA Nanofibers on Cuspal Flexure, Microhardness, Wear, Surface Roughness and Color Stability of Experimental Resin-Composites

El-Safty

Kenawy

2019

Egyptian Dental Journal

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Objective: To study the cuspal flexure (CF), Vickers microhardness (HV), three-body wear (W), surface roughness (SR) and color stability (CS) of experimental resin-composites reinforced with Bis-GMA and UDMA nanofibers synthesized by electrospinning technique. Materials and methods: Bis-GMA (Bis-GMA+TEGDMA+PEGDMA) and UDMA (UDMA+PEGDMA) nanofibers were synthesized by wet electrospinning technique and characterized by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). After being ball-milled to a nanoscale size (< 100 nm) in a ball-milling machine (Retsch-PM 400, Haan, Germany), these nanofibers were added to a prepared experimental resin-composite. This study was divided, according to the percent and type of added nanofibers, into eight groups (n=10/group except for color stability n=11): one control group, three groups reinforced with 7, 11 and 15 wt% Bis-GMA nanofibers and four groups reinforced with 7, 11, 15 and 20 wt% UDMA nanofibers. For each of these groups, CF, HV, W, SR and CS were studied. CF was studied by the digital image correlation method which analyzes the displacement of an object using a USB digital microscope with a built-in camera (COMET xS, Steinbichler Optotechnik GmbH, Neubeuern, Germany). HV was measured according to the ASTM E-384:1999 using a Digital Display Vickers Microhardness Tester (ZHVµ Micro Vickers Hardness Tester, Indentec Hardness Testing, Zwick Roell Co., Ltd. Atlanta, USA). W testing was carried out according to ISO/TS 14569:2001 using a custom-made cusp-on-disc sliding machine. Measurement of SR was performed according to ISO 25178-2:2012 and CS testing was carried out according to the regulations of ISO 4049; 2009 using a portable reflective spectrophotometer (X-Rite, model RM200QC, Neu-Isenburg, Germany). Data were collected and submitted to One-way ANOVA and post-hoc Tukey and Dunnett's T3 tests with the significance level set at (p ≤ 0.05).

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Effect of Synthesized Bis-GMA and UDMA Nanofibers on Cuspal Flexure, Microhardness, Wear, Surface Roughness and Color Stability of Experimental Resin-Composites

El-Safty

Kenawy

2019

Egyptian Dental Journal

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“…Nagakura, et al [16] reported that the flexural strength and flexural modulus of polypropylene containing 36.1 vol% glass fibers were 170.5 ± 7.4 MPa and 16.7 ± 0.7 GPa, respectively. Wang, et al [17] reported that the flexural strength and flexural modulus of bisphenol A-glycidyl methacrylate/TEGDMA mixed resin containing 10 mass% SiO 2 nanofiber were approximately 130 MPa and 3.5 GPa, respectively. The flexural strength and the flexural modulus of specimen 1.0D containing 4 vol% (about 8.6 mass%) SiC fibers were 235.0 ± 11.8 MPa and 5.0 ± 0.5 GPa, respectively, in this study.…”

Section: Discussionmentioning

confidence: 99%

Effects of Silanization Conditions on Flexural Properties of Sic Fiber-Reinforced Resin

Taka¹,

Aoyagi²,

Okawa³

et al. 2018

Dentistry

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Objective:The aim of this study was to evaluate the effects of silanization conditions on the mechanical properties of the SiC fiber-reinforced resin. Materials and Methods:A mixture of urethane dimethacrylate and Triethylene Glycol Dimethacrylate (TEGDMA), with camphorquinone and 2-(N,N-dimethylamino)ethyl methacrylate as the visible-light initiator, was prepared as a matrix resin. The SiC fiber containing 10 mass% oxygen was silanized by two methods, using experimental silane coupling agents containing 0.5, 1.0, and 2.0 mass% 3-(Methacryloyloxy) Propyl Trimethoxy Silane (γ-MPTS). The silanization methods were the drying method, which enabled silanization at atmospheric conditions for two weeks, and the heating method, which enabled silanization at 100°C for 30 min. After silanization, SiC fibers were analyzed by Fourier Transform Infrared (FTIR) spectroscopy. Mechanical properties of experimental SiC fiber-reinforced resin were measured by the three-point bending test according to ISO 4049:2009, and the fracture surface of SiC fiber-reinforced resin was observed using an Electron Probe Micro Analyzer (EPMA). Results:The FTIR absorbance peaks at 815 cm -1 attributed to the Si-O-CH3 groups of the γ-MPTS and 1087 cm -1 attributed to the Si-O-Si siloxane bonding were observed on the SiC fiber silanized with 1.0 mass% γ-MPTS by the drying method. Moreover, EPMA observation showed that these SiC fibers were covered with the matrix resin. Thus, these SiC fibers could adhere chemically to the matrix resin. The flexural strength and modulus of the fiberreinforced resin containing the SiC fiber silanized with 1.0 mass% γ-MPTS using the drying method were 238.7 ± 41.1 MPa and 6.0 ± 1.1 GPa, respectively. In contrast, those of the SiC fiber-reinforced resin containing the SiC fibers silanized by the heating method was not improved. Conclusion:The reinforced resin containing the SiC fiber silanized with 1.0 mass% γ-MPTS by the drying method showed mechanical properties superior to those of the other SiC fiber-reinforced resin.

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“…In this way, we aimed to make Far more selective because it would be released selectively in acidic, cariogenic microenvironments in the oral cavity. We added Tris(tetra-n-butylammonium) hydrogen pyrophosphate (TBAP) to the PEG-hyd-Far amphiphilic conjugate, since the pyrophosphate (PPi) moiety binds rapidly to hydroxyapatite [Ca 10 (PO 4 ) 6 (OH) 2 ] [22,23], in which hydroxyapatite accounts for 95-96% of the enamel mass [24][25].…”

Section: Introductionmentioning

confidence: 99%

“…25.3 mg, 0.25 mmol) was added to a stirred solution of HO-PEG 2000 -NHNH 2 (500 mg, 0.25 mmol) in methanol. The mixture was cooled to 0 °C and di-tert-butyl dicarbonate (65.5 mg, 0.30 mmol) was added slowly to the reaction solution.…”

mentioning

confidence: 99%

Farnesal-loaded pH-sensitive polymeric micelles provided effective prevention and treatment on dental caries

wang

chen

et al. 2020

Preprint

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Background: Farnesol is a sesquiterpene from propolis and citrus fruit that shows promising anti-bacterial activity for caries treatment and prevention, but its hydrophobicity limits the clinical application. We aimed to develop the novel polymeric micelles (PMs) containing a kind of derivative of farnesol and a ligand of pyrophosphate (PPi) that mediated PMs to adhere tightly with the tooth enamel. Results: Farnesal (Far) was derived from farnesol and successfully linked to PEG via an acid-labile hydrazone bond to form PEG-hyd-Far, which was then conjugated to PPi and loaded into PMs to form the aimed novel drug delivery system, PPi-Far-PMs. The in vitro test about the binding of PPi-Far-PMs to hydroxyapatite showed that PPi-Far-PMs could bind rapidly to hydroxyapatite and quickly release Far under the acidic conditions. Results from the mechanical testing and the micro-computed tomography indicated that PPi-Far-PMs could restore the microarchitecture of teeth with caries. Moreover, PPi-Far-PMs diminished the incidence and severity of smooth and sulcal surface caries in rats that were infected with Streptococcus mutans while being fed with a high-sucrose diet . The anti-caries efficacy of free Far can be improved significantly by PPi-Far-PMs through the effective binding of it with tooth enamel via PPi. Conclusions: This novel drug-delivery system may be useful for the treatment and prevention of dental caries as well as the targeting therapy of anti-bacterial drugs in the oral disease.

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Improved performance of Bis-GMA/TEGDMA dental composites by net-like structures formed from SiO 2 nanofiber fillers

Cited by 64 publications

References 35 publications

Effect of Synthesized Bis-GMA and UDMA Nanofibers on Cuspal Flexure, Microhardness, Wear, Surface Roughness and Color Stability of Experimental Resin-Composites

Effect of Synthesized Bis-GMA and UDMA Nanofibers on Cuspal Flexure, Microhardness, Wear, Surface Roughness and Color Stability of Experimental Resin-Composites

Effects of Silanization Conditions on Flexural Properties of Sic Fiber-Reinforced Resin

Farnesal-loaded pH-sensitive polymeric micelles provided effective prevention and treatment on dental caries

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