Objectives: To find the relationship of diabetes control to periodontal status in type 1 diabetic patients and to compare the severity of periodontal disease of type-1 diabetics (IDDM) and non-diabetics and to further compare the periodontal status in the controlled and uncontrolled diabetics in a group of Libyan population to form a baseline reference for future researches. Materials & Methods: The periodontal status of 30 diabetic and 30 control subjects was examined. The diabetic group was further subdivided into controlled and uncontrolled groups. Results: There were significant differences between the whole diabetic group and the control group in terms of the periodontal status. A comparison between the controls and diabetic subgroups revealed that controlled diabetic patients had poor periodontal health than controls. Within the diabetic subgroups, there was more loss of attachment in the uncontrolled diabetics. Conclusion: Better periodontal health in the diabetic patients may be related to good control of diabetes, indicating better resistance of the periodontium.