Journal
OTOLARYNGOLOGY-HEAD AND NECK SURGERY
Volume 123, Issue 3, Pages 246-251Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1067/mhn.2000.107458
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Bacterial biofilm formation has been implicated in persistent posttympanostomy otorrhea and irreversible tube contamination. The use of a tympanostomy tube with a resistance to biofilm formation by the most common organisms associated with persistent infection may decrease the incidence of chronic otorrhea and the need for tube removal. In this investigation, scanning electron microscopy was used to compare a phosphorylcholine-coated fluoroplastic tympanostomy tube to plain fluoroplastic and silver oxide-impregnated fluoroplastic for resistance to biofilm formation after in vitro incubation with Staphylococcus aureus or Pseudomonas aeruginosa. Only a biofilm from Pseodomonas formed on the untreated fluoroplastic tubes, whereas the silver oxide-impregnated tubes developed biofilms from both S aureus and P aeruginosa. In contrast, the coated fluoroplastic tube showed resistance to both staphylococcal and pseudomonal biofilm adhesion. This is the first study to demonstrate the effect of a surface treatment of fluoroplastic as a method to inhibit biofilm formation by both S aureus and P aeroginosa. This reinforces our previous studies showing that surface-adherence properties such as charge or slickness or both may be more beneficial than antibacterial treatments in preventing film adhesion.
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