Prevalence of Entamoeba gingivalis and Trichomonas tenax among Patients ‎suffering from Chronic Systemic Diseases in Egypt ‎

in sera drawn from cases and controls. Results: The prevalence of oral protozoa was significantly increased in chronic diseases, as E. gingivalis was reported in 80%, 76, and 74% of diabetic, renal, and hepatic groups of patients respectively compared to 20% in the control healthy group. While T. tenax was reported in 70%, 62%, and 64% respectively compared to 16 % in the control group. Conclusion: This high prevalence in chronic systemic disease needs more investigations concerning its pathogenesis, immunological mediators that may affect systemic diseases and the interplay between them .