Effectiveness of Non-surgical Periodontal Treatment on HbA1c Levels in a Patient With Type 2 Diabetes Mellitus

Inclusion Criteria: * Diagnosis of type 2 diabetes (code CIAP-2 T90) * With at least one determination of HbA1c in the last 3 months HbA1c\> 7.5% * No changes in hypoglycemic or insulin treatment in the last 3 months. * With generalized moderate-severe chronic periodontal disease. * Presence of at least 16 natural teeth. * Informed consent. Exclusion Criteria: * Patients with basic systemic diseases with oral involvement (autoimmune diseases of oral involvement: oral lichen planus, lupus, pemphigus, pemphigoid) * Limited life expectancy. * Urgent diabetic complications in the 30 days prior to the study. * They need extensive oral treatment: fistulous trajectories, cellulitis, pulpitis or other oral infections. * Pregnant, with desire for pregnancy in the 12 months of study or breastfeeding. * That they have received periodontal treatment in the last 6 months. * That they have received antibiotic and / or anti-inflammatory regimen continued at least in the last 4 weeks prior to the study (except low doses of acetylsalicylic acid). * In treatment with corticosteroids or immunosuppressive drugs. * On dialysis or risk of bleeding (anticoagulant treatment). * Dependent on alcohol. * Patients who require antibiotic prophylaxis for the realization of SPR. * Patients with uncontrolled systemic diseases (with the exception of diabetes): cardiovascular, lung, liver, kidney disease in advanced stages or neoplasms.