Aim: primary goal of this research was to demonstrate the link between severity of periodontal disease and type 1 diabetes in children. Subjects and Methods: this prospective study included total of 40 children aged 5 to 12 years were included in this study, and the evaluation of periodontal disease was done using “Gingival Index (GI), Plaque Index (PI), and Clinical Attachment Loss (CAL)"; the blood glucose level was assessed using “Glycosylated hemoglobin (HbA1c percent)"; and the patients were reevaluated after 3 months, 6 month and 9 month intervals. Results: The study comprised 40 children, 23 females and 17 males, with a mean age of 8.52 4.16. The two groups did not differ much. Both groups' mean gingival index, plaque index, and clinical attachment level decreased over time. Group 1 had significantly lower mean gingival index, plaque index, and clinical attachment level scores than group 2 at baseline and three months post-intervention. Both groups' mean HbA1c percent dropped with time. This decrease was only seen in group 2, and only between baseline and 9 months post-intervention in group 1. Conclusion: Determining the risk of periodontitis and associated consequences in poorly treated diabetic children should be a priority in this study. Children with severe periodontitis should also have their blood glucose levels checked.