[Important medical-dental interactions. Oral manifestations of systemic auto-immune diseases].

Systemic auto-immune diseases are relatively common. This article describes the oral manifestations of disorders that might be seen in patients with the most prevalent auto-immune diseases, specifically rheumatoid arthritis, systemic lupus erythematosus and Sjögren's disease. The article gives guidelines for dentists and other carers within the oral care system for this category of patients.