On the same day, after measuring blood pressure, glycaemia and A1C, and saliva collection, the tooth extraction will be performed. No antibiotics will be prescribed before or after surgery, as prophylactic function. Individuals of SG will be oriented to feed and administer insulin normally. Subjects with abnormal laboratorial exams or abnormal glycaemia (under 70 or above 400) will re-evaluated and the tooth extraction post-pone.