Shared microbiological and immunological patterns in periodontitis and IBD: A scoping review.

Objectives: To extract the microbiological and immunological evidence underpinning the association between periodontitis and inflammatory bowel disease (IBD).

Methods: Relevant articles were sorted through a systematic search on PubMed, Embase, Scopus and Web of Science up to October 2020. Available evidence was grouped in three different clusters: (a) studies that examined oral microbial alterations in IBD patients; (b) studies that investigated intestinal dysbiosis in patients with periodontitis; and (c) evidence for a shared immunological pattern between the two conditions.