Abstract: Objective：The research is designed to test and verify the correlation between the periodontal health and the control of control, weight index, and lipid level of patients with type II diabetes, during which special attention has been paid on the youth group (aged 14 - 44) and the elderly group (60 years old or above) .Methods：The selected hospitalized patients, in total of 229, were divided into two groups: the youth group (aged 14-44) and the elderly group (60 years old or above). Statistics employed in the research has been collected through the periodontal inspection, body-mass index calculation and hospital medical reports on glycated hemoglobin, total cholesterol, and triglyceride. Afterwards, a database has been established with the help of the software named Epdata. Eventually, the correlation between the periodontal health and glycemic control, weight index, and lipid level of the two groups has been verified based on the data analysis conducted through SPSS14.0 package. Results：Analysis on single factor showed that the difference between total cholesterol p < 0.001) and glycated hemoglobin (p < 0.001) has remarkable statistics meaning. And the differences among of triglycerides (p = 0.016), Overweight (p= 0.002), Obesity (p = 0.019) have statistics meaning. Or in other words, all the above factors were correlated with periodontal disease of the patients with type II diabetes. The logistic regression analysis on both groups showed that glycated hemoglobin ,triglycerides, overweight and obesity are the major reasons for periodontal disease in youth group. While the major reasons for periodontal disease go to the total cholesterol, glycated hemoglobin for the elderly group. Conclusion：As for the young patients with type II diabetes, Poor blood glucose control ,increases in obesity and triglyceride can probably lead up to periodontal disease. While the best prophylactic measure for aging population to reduce the incidence of periodontal disease is to control both blood glucose and total cholesterol.

Key words: Type 2 diabetes, Periodontitis, weight index, Lipid levels.