The effects of chitosan coated Ti.

<p>on Porphyromonas gingivalis and on Actinomyces naeslundii in liquid medium for 32 hours. Data are expressed in % of bacteria in contact with coated sample compared to the bacteria in contact with control (or percentage of bacterial inhibition). Data represent the means ± SD of three independent experiments. * p<0.01.</p

Proportion of chitosan specific fragments measured by Tof-SIMS.

<p>Proportion of chitosan specific fragments measured by Tof-SIMS.</p

Schemes displaying coating behavior under tip contact with an applied load (F).

<p>(A) the burial depth (h) is less than the thickness of the coating (e). (B) the burial depth (h) is greater than the thickness of the coating (e).</p

FTIR-ATR spectra.

<p>(A) chitosan. (B) chitosan–coated sample.</p

Optical micrograph of scratch observed on chitosan-coated surface.

<p>The image is a detail of <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039367#pone-0039367-g004" target="_blank">Figure 4</a> for a applied load of 5,5 N.</p

Graphs displaying the evolution of the Vickers Hardness (HV) versus inverse of the diagonal of the indent (1/l).

<p>(A) Measurements on the composite (HVc) and on the substrate (HVs). (B) Scheme of the theoretical curves. HVs represents the curve of a hard substrate and HVf the curve of a soft film. HVc is the curve of the composite film-substrate: for high load (l → ∞), HVc ∼ HVs, for very low load (l → 0), HVc ∼ HVf.</p

Optical micrographs of scratches observed on chitosan-coated surfaces.

<p>Optical micrographs of scratches observed on chitosan-coated surfaces.</p

Diagram displaying % of resazurin reduction for uncoated and Chitosan-coated samples.

<p>Data are given after 2, 4 and 7 days of NIH3T3 fibroblasts culture. Data are presented as means ± SD.</p