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. 2019 Dec 26;19:291. doi: 10.1186/s12903-019-0979-y

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Total cfu counts (a, b) of a 2-species “healthy” biofilm, and total cfu counts of a 6-species “periodontal” biofilm (c, d and counts of Porphyromonas gingivalis (e, f) and Tannerella forsythia (g, h) in “periodontal” biofilm after more-fold dipping of polylactide (a, c, e, g) and collagen (b, d, f, h) membranes into 0.06 and 0.12% chlorhexidine digluconate solution (CHX0.06 and CHX0.12) and culturing biofilms for 3 d. Presented are median and 10, 25, 75 and 90 percentiles. **p < 0.01 vs. control