Prevalence of apical periodontitis in patients with autoimmune diseases: A case-control study.

Aim: The purpose of this case-control study was to compare the prevalence of apical periodontitis (AP) in patients affected by autoimmune disorders (AD) (inflammatory bowel disease [IBD], rheumatoid arthritis [RA] and psoriasis [Ps]) with the prevalence of AP in subjects without AD. The prevalences of AP in patients taking biologic medications, conventional medications and no medication were also compared.

Methodology: Eighty-nine patients (2145 teeth) with AD were investigated and the control group included 89 patients (2329 teeth) with no systemic diseases.