en بهداشت Health تحقیقی Original article <div style="text-align: justify;"><span style="font-family:Times New Roman;"><span style="font-size:12px;"><b>Background:</b> Rheumatoid Arthritis (RA) is the most common chronic inflammatory joint disease. Previous studies have shown that periodontitis and RA have a probable bilateral relationship. This study aimed to investigate the association between periodontal indices and RA activity levels in RA activity levels and to compare these indices by disease status.<br> <b>Methods:</b> In this cross-sectional pilot study, 50 patients referred to the public rheumatology clinic who met the inclusion criteria were enrolled. They were allocated into three groups based on disease activity: inactive, active, and recurrent active rheumatoid arthritis. Periodontal indices, including bleeding on probing (BOP), clinical attachment loss (CAL), pocket depth (PD), tooth loss (TL), and rheumatologic indices, such as hemoglobin level, were recorded and compared between groups. Significance was set at a P-Value <0.05.<br> <b>Results:</b> No significant differences in demographic data, periodontal status, or laboratory parameters were found among the RA groups (p>0.05)., with the sole exception of the erythrocyte sedimentation rate (ESR), which showed a significant difference (p=0.016).<br> <b>Conclusion</b>: Unlike ESR, periodontal indices showed no significant differences across RA activity states. These findings are hypothesis-generating rather than definitive evidence of causality. Therefore, clinical recommendations linking periodontal status to RA activity should be made cautiously pending further longitudinal studies.</span></span></div> Arthritis, Rheumatoid, Periodontitis, Attachment loss, Tooth Loss, Pocket Depth 0 0 http://goums.ac.ir/jorjanijournal/browse.php?a_code=A-10-504-2&slc_lang=en&sid=1 Maryam Jalili Sadrabad dr.njalili@gmail.com 100319475328460010857 100319475328460010857 No Department of Oral and Maxillofacial Medicine, School of Dentistry, Semnan University of Medical Sciences, Semnan, Iran Shabnam Sohanian dr.sh.sohanian@gmail.com 100319475328460010858 100319475328460010858 No Department of Oral and Maxillofacial Pathology, School of Dentistry, Semnan University of Medical Sciences, Semnan, Iran Fatemeh Owlia f.owlia@ssu.ac.ir 100319475328460010859 100319475328460010859 Yes Department of Oral and Maxillofacial Medicine, School of Dentistry, Shahid Sadoughi University of Medical Science, Yazd, Iran Elnaz Karimyan Elnaz.karimyan@gmail.com 100319475328460010860 100319475328460010860 No Department of Restorative Dentistry, School of Dentistry, Shahid Sadoughi University of Medical Science, Yazd, Iran