Affiliation:
1. Department of Implantology, Wuhan Public Stomatological Hospital, Wuhan, 432000, China
2. Wuhan Noel Dental Clinic, Wuhan, 430014, China
Abstract
Herein, nanocomposites comprising Ag–Au-alloy-based nanomaterials ensembled on the polytetrafluoroethylene (PTFE) were fabricated using the physical vapor deposition method. The Ag-based nanomaterials (AgNMs) undergo oxidation and dissolution in water; therefore, changes in the
shape, optical characteristics, and composition of the nanocomposites were investigated through transmission electron microscopy, ultraviolet-visible spectroscopy, and X-ray photoelectron spectroscopy. PTFE@Ag–Au coatings exhibited high antibiofilm efficacy against E. coli WT
F1693 and governed the synergistic effect of antibacterial non-stick PTFE and the Ag–Au alloy. The PTFE@Ag–Au-coated NMs sustained the release of Ag+ ions and inhibited up to 50% bacterial growth after 7 days in relation to the PTFE-coated NMs. The conventional XDLVO
and DLVO theories were used to describe bacterial adhesion and understand the anti-adhesion process. Despite concerns associated with the hazardous effect of excessive Ag release on fibroblast cells, the coating methods precisely controlled Ag loading, thereby reducing metallic-implant-related
bacterial infections.
Publisher
American Scientific Publishers
Subject
General Materials Science