Objectives. Review oral manifestations of rheumatic diseases since these can be a diagnostic challenge.Procedures. We performed a PubMed search using terms of rheumatic diseases, autoimmune disease and oral manifestations and also reviewed related guidelines and classifications.Results. We describe the clinical presentations of rheumatic diseases, such as scleroderma, rheumatoid arthritis, Sjögren's syndrome, Systemic lupus erythematosus and others that present specific oral manifestations. We also review the association between periodontal disease and autoimmunity that has been recently described in the literature.Conclusions. The oral manifestations of rheumatic diseases are diverse and can represent a challenge for medical and dental professionals
