Physicochemical properties of discontinuous S2-glass fiber reinforced resin composite

Abstract

The objective of this study was to investigate several physicochemical properties of an experimental discontinuous S2-glass fiberreinforced resin composite. The experimental composite was prepared by mixing 10 wt% of discontinuous S2-glass fibers with 27.5 wt% of resin matrix and 62.5 wt% of particulate fillers. Flexural strength (FS) and modulus (FM), fracture toughness (FT), work of fracture (WOF), double bond conversion (DC), Vickers hardness, volume shrinkage (VS) and fiber length distribution were determined. These were compared with two commercial resin composites. The experimental composite showed the highest FS, WOF and FT compared with two control composites. The DC of the experimental composite was comparable with controls. No significant difference was observed in VS between the three tested composites. The use of discontinuous glass fiber fillers with polymer matrix and particulate fillers yielded improved physical properties and substantial improvement was associated with the use of S2-glass fiber.

Physical and mechanical characteristics of short fiber-reinforced resin composite in comparison with bulk-fill composites

“…Also, they can stop propagation of cracks in the restoration and increase modulus [21]. The differences in flexural properties presented in this study for bulk-fill composites and short fiber-reinforced composites are in accordance with previous research [11,22]. Differences in flexural properties between resin composites can be attributed not only to filler content but also to the type and size of the filler in the composition of the restorative material.…”

Short fiber‐reinforced composite restorations: A review of the current literature

“…After 24 hours of curing among other tested materials, SFRC yielded the highest Vickers hardness (61.4) at baseline measurements. In addition to the previous mentioned papers, many other laboratory studies have demonstrated the improved mechanical performance of SFRC, especially fracture toughness and flexural strength in comparison to the tested bulk‐fill or conventional PFC resins …”

A comparison of the effects of incremental and snowplow techniques on the mechanical properties of composite restorations

“…Other practical factors such as the patient's diet and dental hygiene can also impact surface characteristics 48 . Empirically, a resin composite's hardness is commonly correlated with mechanical strength, rigidity and resistance to occlusal degradation in the oral cavity 49 . Structurally, the hardness of the resin materials is closely related to filler size, shape and fraction in the inorganic phase, generally increasing with filler content 50 .…”