An inter-relationship exists between oral health and rheumatoid arthritis (RA). Periodontal disease is more common in patients with RA, and treatment of periodontal disease may reduce severity of RA.
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Pischon N, Pischon T, Kroger J, et al. Association among rheumatoid arthritis, oral hygiene, and periodontitis. J Periodontol, 2008; 79(6): 979-986.