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. 2022 Mar 16;12:823985. doi: 10.3389/fcimb.2022.823985

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Copyright © 2022 Sayardoust, Johansson and Jönsson

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Forest plot on the difference between the test and placebo groups in mean change in probing pocket depth before and after intervention. (B) Funnel plot depicting the publication bias for the studies included in the meta-analysis.