Delayed gelation through chain-transfer reactions: Stress reduction in methacrylate networks

Pfeifer, Carmem S.; Wilson, Nicholas D.; Lewis, Shawna; Shelton, Zachary R.; Stansbury, J.W.

doi:10.1016/j.dental.2010.08.083

Cited by 1 publication

(1 citation statement)

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“…The use of nanocomposite resins improves the bond between the tooth structure and the restorative materials, which leads to a more stable and natural interface . Previous studies indicate that the use of many kinds of materials for composite resins such as acrylic resins, silicate cements, matrix organic phases as dimethacrylate, urethane dimethacrylate (UDMA), triethyleneglycol dimethacrylate (TEGDMA), bisphenol‐A‐dimethacrylate (Bis‐EMA), decanediol dimethacrylate (D 3 MA) raises concerns about the mechanical and fracture properties owing to the large size of the particles. Recently, micelles have been shown significant interest and attention as delivery systems for poorly water‐soluble drugs.…”

Section: Introductionmentioning

confidence: 99%

Novel CaO/polylactic acid nanoscaffold as dental resin nanocomposites and the investigation of physicochemical properties

et al. 2019

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In this study, for the first time, calcium oxide (CaO)/polylactic acid nanoscaffolds were synthesized by co‐precipitation assistant reverse micelles method. The physical and chemical (physicochemical) properties of the structures as dental resin composites were also studied. Nanocomposite materials as primary and basic dental compounds can be conveniently applied as dental filling materials with a high esthetic quality. In this research nanoscaffolds act as a bed for nanoparticles and improve the mechanical and chemical (mechanochemical) properties, CaO nanoparticles were loading in polylactic acid nanoscaffold as a bioactivity polymer for usage in the dental resin composites. Mechanical properties of the dental resin composite containing CaO/polylactic acid nanoscaffold were calculated: the flexural strength (137.2 MPa), modulus (12.9GPa) and compressive strength (344.2 MPa). Potential of the basic nanoparticle and the products were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), dynamic light scattering (DLS), ultraviolet‐visible spectroscopy (UV‐visible) and atomic force microscopy (AFM) showed the size of the optimized nanostructures was about 85 to 120 nm. According to TGA results of polylactic acid nanofibers with thermal stability below 300°C these high thermal stability materials can be used as dental resin composites.

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