Antibacterial activity of dental composites containing quaternary ammonium polyethylenimine nanoparticles against Streptococcus mutans

  • Beyth N
  • Yudovin-Farber I
  • Bahir R
 et al. 
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Abstract

The antibacterial activity of quaternary ammonium polyethylenimine (PEI) nanoparticles embedded at 1% w/w with clinically used bonding, flowable and hybrid dental composite resins and cured by light polymerization was studied. The antibacterial activity was tested with Streptoccocus mutans by: (i) the agar diffusion test (ADT); (ii) the direct contact test; (iii) bacterial growth in the materials elute; (iv) and scanning electron microscope (SEM). Using the direct contact test, antibacterial activity (p

Author-supplied keywords

  • Antibacterial
  • Dental composite
  • Nanoparticles
  • Polyethylenimine
  • Quaternary ammonium

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