The purpose of this study was to conduct a systematic review and if appropriate a meta‑analysis of the efficacy of daily rinsing with green tea‑based mouthwashes in terms of plaque index (PI) and/or gingival index (GI) as compared to other mouthwashes in plaque‑induced gingivitis patients. Materials and Methods:  Many major journals were searched for studies up to December 2016. A comprehensive search strategy was designed, and the eligible articles were independently screened for eligibility by two reviewers. Randomized controlled trials in which individuals were intervened with oral mouthwashes of interest were included.

Where appropriate, a meta‑analysis was performed and standardized mean differences (SMDs) for GI and PI were calculated. Results: A total of 9 articles out of the 311 titles met the eligibility criteria. A meta‑analysis was performed for five studies that compared…