Table 2.

Search strategy

Electronic databases: PubMed, Scopus

Search string: “periodontitis” or “periodontal disease”; and “Alzheimer’s disease”

Filter: none

Language: English

Inclusion criteria: review articles, observational studies, preclinical studies explicit evaluation of the correlation between periodontal inflammation and Alzheimer’s disease, as evidenced by periodontal bacteria or markers of chronic inflammation

Exclusion criteria: published prior to 2000

Additional sources: reference lists of all screened studies