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首页> 外文期刊>Journal of orthopaedic research >Structural biofilm resistance of carbon‐infiltrated carbon nanotube coatings
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Structural biofilm resistance of carbon‐infiltrated carbon nanotube coatings

机译：Structural biofilm resistance of carbon‐infiltrated carbon nanotube coatings

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Abstract Periprosthetic joint infection (PJI) is a devastating complication of orthopedic implant surgeries, such as total knee and hip arthroplasties. Treatment requires additional surgeries because antibiotics have limited efficacy due to biofilm formation and resistant bacterial strains such as methicillin‐resistant Staphylococcus aureus (MRSA). A non‐pharmaceutical approach is needed, and examples of this are found in nature; dragonfly and cicada wings are antibacterial because of their nanopillar surface structure rather than their chemistry. Carbon‐infiltrated carbon nanotube (CICNT) surfaces exhibit a similar nanopillar structure, and have been shown to facilitate osseointegration, and it is postulated that they might provide a structurally‐derived resistance to bacterial proliferation and biofilm formation. The objective of this study was to test the biofilm resistance of CICNT coatings. Two types of CICNT were produced: a vertically aligned CNT forest on a silicon substrate using a layer of iron as the catalyst (CICNT‐Si) and a random‐oriented CNT forest on stainless steel (SS) substrate using the substrate as the catalyst (CICNT‐SS). These were tested against SS and carbon controls. After 48?h in an MRSA biofilm reactor, samples demonstrated that both types of CICNT coatings significantly (p?

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