Background: There are some discrepancy in association between activity of rheumatoid arthritis (RA) and periodontitis. The aim of
this study was to evaluate the periodontal status of outpatients with RA.
Methods: The study was conducted in 2013-14 in a rheumatology clinic in Sari, north of Iran on 74 patients with RA. Evaluation of
RA disease activity was according to disease activity score 28 (DAS28). Periodontitis was evaluated by probing depth (PD), gingival
index (GI), clinical attachment level (CAL index), plaque index (PI), and panoramic X-ray. Statistical analysis included independent ttest
and Mann-Whitney U test for quantitative, and chi square and OR for qualitative variables and evaluation of RA activity and periodontitis
severity.
Results: The mean±SD of age and disease duration were 47.01±8.1 and 8.93±8.6 years, respectively and the mean±SD number of
teeth was 20.70±6.8. Twenty-seven (36.5%) patients had moderate to severe disease. Forty-seven cases (63.5%) were found with periodontitis
and 14 (12.2%) were identified to have moderate to severe periodontitis, unrelated to disease activity (p=0.22). For active/inactive
periodontitis OR =1.33 (95% CI: 0.46 - 3.87) was computed. There was no association between RA disease activity and
number of teeth, CAL, PI, PD, and GI, (p>0.05).
Conclusion: About 60% of RA patients suffered from periodontitis, but there was not any significant relation between RA disease
activity and severity of periodontitis. Periodontitis may interfere with management and follow up of RA, so periodic periodontal examination
is suggested in these patients.