NDLI: Antibacterial effects of bio-inspired nanostructured materials

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Antibacterial effects of bio-inspired nanostructured materials

Content Provider	Taylor & Francis Online
Author	Mukaddam, Khaled Hauser-Gerspach, Irmgard Marot, Laurent Glatzel, Thilo Astasov-Frauenhoffer, Monika Köser, Joachim Kühl, Sebastian Kisiel, Marcin
Abstract	Several properties of bio-inspired surfaces like chemical composition, surface topography, surface hydrophilicity and even surface charge could influence bacterial adhesion to implant materials. Therefore, a nanostructured surface is being investigated to avoid bacterial colonization by their physico-mechanical and chemical aspects.Both smooth and rough-surfaced titanium (PT, SLA) and zirconia (M and ZLA) surfaces were used as controls. Titanium SLA was modified by two-step-etching to create nanostructured surface. Antibacterial properties of the materials were tested by adhesion of Porphyromonas gingivalis (ATCC 33277). The vitality of bacteria was assessed by Live/Dead BacLight™ Bacterial Viability Kit or by conventional culturing on Columbia blood agar.Conventional culturing revealed reduction of bacteria on nanostructured titanium (5.27±0.8 x 104 CFU/mm2) in comparison to rough-surfaced control materials (ZLA 6.16±4.86 x 104 and SLA 1.53±0.75 x 105 CFU/mm2). However, smooth-surfaced control materials (M 2.25±0.84 x 104 and PT 6.63±5.77 x 103 CFU/mm2) showed similar results to the nanostructured material. Live/dead staining demonstrated the antimicrobial efficacy of the nanostructured material revealing reduction of vital bacteria population up to 70%. This effect was not observed on the control materials (bacterial vitality ≥95%).In conclusion, nanostructured titanium surface shows a reduction of vital bacteria. Therefore, bio-inspired nanostructures can modify the bacteria–titanium interaction.
File Format	PDF HTM / HTML
ISSN	20002297
DOI	10.1080/20002297.2017.1325241
Journal	Journal of Oral Microbiology
Volume Number	9
Issue Number	sup1
Language	English
Publisher	Taylor & Francis
Publisher Date	2017-06-09
Access Restriction	Open
Content Type	Text
Subject	Microbiology (medical) Dentistry Infectious Diseases 3500/3501

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