Background/Purpose. Chronic periodontitis is an inflammatory disease of gums that causes loss of supporting structures of teeth, that is, gingiva, periodontal ligament, cementum, and alveolar bone. Levels of various cytokines in the serum, gingival tissues, and gingival crevicular fluid in patients with chronic periodontitis have been studied, but limited data are available on the level of cytokines in saliva. Therefore, a study was designed to determine levels of salivary IL-6 and IL-17 in patients with calculus associated chronic periodontitis. Materials and Methods. It was a comparative, cross-sectional study that is comprised of 41 healthy controls and 41 calculus associated chronic periodontitis patients (CP patients). According to the degree of attachment loss, CP patients were subcategorized as mild (CAL 1-2 mm), moderate (CAL 3-4 mm), and severe (CAL > 5 mm) forms of periodontitis. Salivary levels of IL-6 and IL-17 were determined using enzyme-linked immunosorbent assay (ELISA) technique. Data was analyzed using SPSS 20.0. Results. Between healthy controls and CP patients (moderate and severe disease), a statistically significant difference was observed in the concentrations of IL-6 and IL-17. In CP patients, the highest mean ± SD of salivary IL-6 and IL-17 was observed in severe CP, followed by moderate and mild CP. Regarding level of IL-6, a statistically significant difference was observed between mild and severe disease and between moderate and severe subcategories of CP patients. Similarly, statistically significant difference was observed in the level of IL-17 between mild and moderate, mild and severe disease, and moderate and severe disease. Conclusion. The levels of salivary IL-6 and IL-17 were increased significantly in calculus associated CP patients as compared to healthy controls and these levels increased with the progression of CP. Clinical Significance. Salivary levels of IL-6 and IL-17 may help in the subcategorization of CP.

Chronic periodontitis is inflammation of supporting structures of teeth caused by microorganisms, and Porphyromonas gingivalis is one of the most common organisms. Periodontitis has been associated with different systemic diseases and rheumatoid arthritis (RA) is one of them. Periodontitis and RA share several features such as inflammation and bone destruction. Enzyme peptidyl arginine deaminase (PAD) is responsible for citrullination of arginine and citrullinated antigens are generated by posttranslational modification. Anti-cyclic citrullinated peptide antibodies and citrullinated peptides (a-enolase, vimentin, fibrinogen, and Type II collagen) are associated with breakdown of self-tolerance in RA. P. gingivalis is the only periodontopathic organism to produce PAD that is responsible for citrullination of arginine. Therefore, patients of periodontitis should be evaluated for RA.

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Background: Dental caries is characterized by demineralization of inorganic portion of tooth and destruction of organic substances of tooth, which often leads to cavitation. The immune mechanisms play an important role in the pathogenesis of dental caries.This study was designed to determine the levels of salivary IgA, TGF-β and IL-17 in patients with dental caries. Methodology: This was a comparative study of 87 individuals (29 healthy controls and 58 patients with dental caries) recruited from the Punjab Dental Hospital, Lahore. Group I included patients with dental caries up to 5 DMFT score (Decayed Missing Filled Teeth), group II had patients with 6 or more DMFT score and group III consisted of healthy individuals without dental caries. Commercially available ELISA kits were used for the detection of salivary IgA, TGF β and IL-17. Results: Highest mean ± SD level of IL-17(2.99±1.11ng/L)and TGFβ (127.8 ±74.0ng/L) were detected in group III. While highest mean ± SD level of salivary IgA (μg/ mL) was detected in the group I (34.64±6.37μg/mL) Conclusion: Level of salivary IgA was increased in patients of dental caries while levels of IL-17and TGFβ were decreased in patients of dental caries as compared to healthy individuals. Bangladesh Journal of Medical Science Vol.18(3) 2019 p.536-539

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