Experimental and computational approach for evaluating the mechanical characteristics of dental composite resins with various filler sizes

Effects of Filler Size on the Mechanical Properties of Polymer-filled Dental Composites: A Review of Recent Developments

“…52 Tanimoto et al reported that adding 70 wt% SiO 2 (3.3 µm) increased the flexural strength of dental composites, whereas adding larger microparticles reduced flexural strength (4.3, 7.9 and 15.5 µm). 29 Two similar studies also reported that adding HA (18.1 µm) to PMMA denture base reduced flexural strength. 53,54 According to Oral et al, the flexural strength of groups reinforced with large microparticles (>315 µm) decreased.…”

“…27 According to Tanimoto et al, increasing filler particle size increased the fracture toughness of resin-modified glass ionomers. 29 Ornaghi et al also found that the fracture toughness of resin composite containing 78 wt% glass particles with a size of 1.9 µm was higher than that of resin composites containing smaller particles; they attributed the increase in fracture toughness to crack deflection. 30 Asar et al found that adding Al 2 O 3 , TiO 2 and ZrO 2 fillers with average sizes of 12.4, 9.6 and 8.6 µm, respectively, at different percentages (1% TiO 2 and 1% ZrO 2 , 2 wt% Al 2 O 3 , 2 wt% TiO 2 and 2 wt% ZrO 2 ) significantly increased the fracture toughness of poly(methyl methacrylate) (PMMA) denture base composites.…”

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.…”

Effects of Monomer Composition and Original Filler Content on Filler Loading in the Resulting Centrifuged Composites

“…It should be highlighted that the total filler content assessed in this study was merely 14 20 wt , whereas composite materials for clinical use include larger amounts of filler particles. In general, the effect of filler size on viscosity increases with increasing filler content 26) . To centrifugally fabricate a composite with mechanical properties tailor-made to specific applications by a specific combination of the components, an industrial centrifugal apparatus should indeed be developed so that the force can be easily multiplied.…”