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. 2019 Apr 27;19:64. doi: 10.1186/s12903-019-0741-5

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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. 4 — 2h Forest plot for meta-analysis of the post-intervention mean plaque scores of Salvadora persica compared to chlorhexidine (sub-grouped according to refrain of oral mechanical measures); (2.1) studies that refrained mechanical measures and (2.2) studies that did not refrain such measures. 3a Forest plot for meta-analysis of post- treatment Streptococcus mutans counts of Salvadora persica in comparison to placebo. 3b Forest plot for meta-analysis of the pre- and post-treatment Streptococcus mutans counts of Salvadora persica. 3c Forest plot for meta-analysis of the pre- and post-treatment Streptococcus mutans counts of placebo rinses. 3d Forest plot for meta-analysis of post-treatment Lactobacilli counts of Salvadora persica in comparison to placebo. [SP Salvadora persica, CHX chlorhexidine, **: significant difference at p = 0.05]