Background: The anti-inflammatory cytokine, interleukin 10 (IL 10), has a crucial role in periodontal diseases. gene coding for this cytokine is pleomorphic. In the promoter region of IL gene, two single nucleotide polymorphisms (SNPs), IL10 1082 and 819, have been discovered to affect expressions. Objective: To investigate association (IL-10-1082 G/A IL-10-819 C/T) with CPO. Patients Methods: ...