Review of silicone surface modification techniques and coatings for antibacterial/antimicrobial applications to improve breast implant surfaces.

Published on Feb 1, 2021in Acta Biomaterialia7.242
· DOI :10.1016/J.ACTBIO.2020.11.020
Mylan Lam2
Estimated H-index: 2
(ISPG: Institut Galilée),
Véronique Migonney25
Estimated H-index: 25
(ISPG: Institut Galilée),
Céline Falentin-Daudre1
Estimated H-index: 1
(ISPG: Institut Galilée)
Sources
Abstract
Abstract Silicone implants are widely used in the medical field for plastic or reconstructive surgeries for the purpose of soft tissue issues. However, as with any implanted object, healthcare-associated infections are not completely avoidable. The material suffers from a lack of biocompatibility and is often subject to bacterial/microbial infections characterized by biofilm growth. Numerous strategies have been developed to either prevent, reduce, or fight bacterial adhesion by providing an antibacterial property. The present review summarizes the diverse approaches to deal with bacterial infections on silicone surfaces along with the different methods to activate/oxidize the surface before any surface modifications. It includes antibacterial coatings with antibiotics or nanoparticles, covalent attachment of active bacterial molecules like peptides or polymers. Regarding silicone surfaces, the activation step is essential to render the surface reactive for any further modifications using energy sources (plasma, UV, ozone) or chemicals (acid solutions, sol-gel strategies, chemical vapor deposition). Meanwhile, corresponding work on breast silicone prosthesis is discussed. The latter is currently in the line of sight for causing severe capsular contractures. Specifically, to that end, besides chemical modifications, the antibacterial effect can also be achieved by physical surface modifications by adjusting the surface roughness and topography for instance.
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