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Poly (hexamethylene biguanide) adsorption on hydrogen peroxide treated Ti–Al–V alloys and effects on wettability, antimicrobial efficacy, and cytotoxicity

Paper ID Volume ID Publish Year Pages File Format Full-Text
6102 462 2014 17 PDF Available
Title
Poly (hexamethylene biguanide) adsorption on hydrogen peroxide treated Ti–Al–V alloys and effects on wettability, antimicrobial efficacy, and cytotoxicity
Abstract

An effective amount of the antiseptic agent PHMB cannot simply be placed on the surface of titanium alloys where hydrocarbons were removed by different purification procedures. Pre-treatment of Ti6Al4V specimen with 5% H2O2 in 24 h results in extra introduced –OH and –COOH groups as well as an adsorbed water film on the surface, which provide the base for the subsequent formation of a relatively stable and multi-layered PHMB film. The superficially adhering PHMB film produces no adverse effects on MG63 cells within a 48 h-cell culture, but promotes the initial attachment and spreading of the osteoblasts on the modified Ti6Al4V surface within 15 min. After direct bacterial inoculation of the active sample, the PHMB film reacts antimicrobially against Gram-positive (Staphylococcus aureus, Staphylococcus epidermidis) and Gram-negative strains (Pseudomonas aeruginosa, Escherichia coli) after surface contact. The bactericidal efficacy is only slightly reduced after using of the same specimen for re-testing the antibacterial activity. MG63 cells adhere and proliferate within 48 h on a PHMB film-containing Ti6Al4V surface, which has been pre-contaminated with S. aureus. Bacterial biofilms were only revealed in controls without PHMB.

Keywords
Titanium-aluminum-vanadium alloy; Hydrogen peroxide; Antimicrobial; PHMB; Biocompatibility; In vitro tests
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Poly (hexamethylene biguanide) adsorption on hydrogen peroxide treated Ti–Al–V alloys and effects on wettability, antimicrobial efficacy, and cytotoxicity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 35, Issue 20, July 2014, Pages 5261–5277
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us