tokens: BACKGROUND : The aim of this study was to determine and compare interleukin-6 ( IL-6 ) levels in gingival crevicular fluid ( GCF ) and clinical periodontal findings in patients with rheumatoid arthritis ( RA ) and adult periodontitis ( AP ) .
folded_tokens: background : the aim of this study be to determine and compare interleukin-6 ( il-6 ) level in gingival crevicular fluid ( gcf ) and clinical periodontal finding in patient with rheumatoid arthritis ( ra ) and adult periodontitis ( ap ) .