There will be a randomized clinical trial with patients from the outpatient clinic of Endocrinology - Prediabetes and outpatient dental clinic of the Faculty of Dentistry, UFRGS who have a diagnosis of metabolic syndrome and diagnosis of periodontitis. The clinical trial will consist of an arm where it will be immediately periodontal treatment (test group) and another arm which will be held later periodontal treatment (control group). The study will last for six months , and after this period, the control group will receive the same treatment to the test group .