Size-scale effects of silica on bis-GMA/TEGDMA based nanohybrid dental restorative composites

Fluoridated hydroxyapatite nanorods as novel fillers for improving mechanical properties of dental composite: Synthesis and application

“…The decrease of DTS values may be due to the higher content of nanofillers, which are a great hindrance to dissipating the stress across the diameter of the samples. This is in strong agreement with Bindu et al [27] who found that the DTS of restorative materials is mainly related to the filler content rather than the size of fillers. It illustrates that the DTS value for samples with fillers more than 0.2 wt% is less than the control samples.…”

“…Furthermore, it was studied by John et al [40] that polymers reinforced by fiber have more strength than conventional polymer. Many researchers have been reported that the improvement in mechanical properties of composite is directly related to the dispersion of nanofiller [41,7,27]. However, it is known that the agglomeration of filler at a high rate of loading can aggravate the degradation of mechanical properties.…”

“…In spite of all these desirable properties, current composites of apatite family in form of nanoparticle need improvements in terms of mechanical properties [26]. Recently, a great attention has been concentrated on the optimization of apatite fillers in terms of size, ratio, shape, and morphology when it is utilized as reinforcement [27].…”

Mechanical Properties of a Dental Nano-Composite in Moist Media Determined by Nano-Scale Measurement

“…The experiment data provided by previous researches suggest that the filler plays an important role in some properties such as elastic modulus [11], polish retention [12]- [14], wear resistance [14], flexural strength [14]- [17], bond strength [18], color stability, translucency, opalescence [19] and fracture toughness [14], [20], [21]. Also, some other studies have shown the effects of filler size [8], [9], [22], [23] and filler shape [11], [20] on mechanical properties of dental composites.…”

Effect of alumina, silk and ceria short fibers in reinforcement of Bis-GMA/TEGDMA dental resin

“…However, they suffer from certain drawbacks such as toxicity, environmental pollution, inadequate bioactivity and lack of aesthetic appearance [3][4][5]. Compared to the dental amalgams, the Resin Based Composites (RBC) are reported to possess better aesthetic property, less safety concern, and clinically effective [6][7][8]. Although 2,2-bis[4-(20-hydroxy-30-ethacryloyloxypropoxy)phenyl]propane (Bis-GMA) is the base monomer most commonly used in restorative materials, it is very high viscosity (>10 3 Pa s) results in limited loadings of reinforcement fillers and low final conversions of homopolymerized Bis-GMA.…”