Table 1 Electronic databases used and search strategies

PubMed

(“exercise“[MeSH Terms] OR “exercise“[All Fields] OR “exercises“[All Fields] OR “exercise therapy“[MeSH Terms] OR (“exercise“[All Fields] AND “therapy“[All Fields]) OR “exercise therapy“[All Fields] OR “exercise s“[All Fields] OR “exercised“[All Fields] OR “exerciser“[All Fields] OR “exercisers“[All Fields] OR “exercising“[All Fields] OR (“physical fitness“[MeSH Terms] OR (“physical“[All Fields] AND “fitness“[All Fields]) OR “physical fitness“[All Fields]) OR (“exercise“[MeSH Terms] OR “exercise“[All Fields] OR (“physical“[All Fields] AND “activity“[All Fields]) OR “physical activity“[All Fields])) AND (“periodontal diseases“[MeSH Terms] OR (“periodontal“[All Fields] AND “diseases“[All Fields]) OR “periodontal diseases“[All Fields] OR (“periodontal“[All Fields] AND “disease“[All Fields]) OR “periodontal disease“[All Fields] OR (“periodontal“[All Fields] OR “periodontally“[All Fields] OR “periodontically“[All Fields] OR “periodontics“[MeSH Terms] OR “periodontics“[All Fields] OR “periodontic“[All Fields] OR “periodontitis“[MeSH Terms] OR “periodontitis“[All Fields] OR “periodontitides“[All Fields] OR (“gingiva“[MeSH Terms] OR “gingiva“[All Fields] OR “gingival“[All Fields] OR “gingivally“[All Fields] OR “gingivals“[All Fields] OR “gingivitis“[MeSH Terms] OR “gingivitis“[All Fields] OR “gingivitides“[All Fields])))

Scopus

(TITLE-ABS-KEY (exercise) OR TITLE-ABS-KEY (exercises) OR TITLE-ABS-KEY (exercise therapy) OR TITLE-ABS-KEY (exercise’s) OR TITLE-ABS-KEY (exercised) OR TITLE-ABS-KEY (exerciser) OR TITLE-ABS-KEY (exercisers) OR TITLE-ABS-KEY (exercising) OR TITLE-ABS-KEY (physical fitness) OR TITLE-ABS-KEY (physical activity)) AND (TITLE-ABS-KEY (periodontal diseases) OR TITLE-ABS-KEY (periodontal disease) OR TITLE-ABS-KEY (gingiva) OR TITLE-ABS-KEY (gingival) OR TITLE-ABS-KEY (gingivally) OR TITLE-ABS-KEY (gingivals) OR TITLE-ABS-KEY (gingivitis) OR TITLE-ABS-KEY (gingivitides))

Web of science

TS= (exercise OR exercises OR exercise therapy OR exercise s OR exercised OR exerciser OR exercisers OR exercising OR physical fitness OR physical activity) AND TS= (periodontal diseases OR periodontal disease OR periodontal OR periodontally OR periodontically OR periodontics OR periodontic OR periodontics OR periodontitides OR gingiva OR gingival OR gingivally OR gingivals OR gingivitis OR gingivitides)

Cochrane library

(exercise OR exercises OR exercise therapy OR exercise s OR exercised OR exerciser OR exercisers OR exercising OR physical fitness OR physical activity) AND (periodontal diseases OR periodontal disease OR periodontal OR periodontally OR periodontically OR periodontics OR periodontic OR periodontics OR periodontitides OR gingiva OR gingival OR gingivally OR gingivals OR gingivitis OR gingivitides)