Periodontitis itself does not directly cause elevated blood glucose values, but periodontitis and diabetes do have a very close biphasic promotion relationship. Simply put, the rate of diabetes is significantly higher in patients with periodontitis than in those without periodontitis. Likewise, periodontitis is far more common in diabetic patients than in non-diabetic patients. In addition, diabetic patients with poor glycemic control have difficulty controlling periodontitis, and the rate of progression of periodontitis in diabetic patients is relatively rapid. Likewise patients with very severe periodontitis will have very difficult blood sugar control and a higher percentage of diabetic women with severe disease. So there is a close link between these two diseases, if you want to treat, it is best to adopt two diseases, while the method of combined treatment, in the control of blood sugar at the same time, for periodontal dose better basic treatment, the periodontal calculus and plaque removal, in the periodontal health at the same time, the control of blood sugar will be relatively more simple.