Yes he can. A person is classified as diabetic when his fasting glucose level is constantly above 140mg/dl, fasting glucose level below 200mg/dl is usually considered safe for any minor oral surgical procedures including dental extractions. However, being a diabetic makes you prone to infections and has a poor effect on wound healing capacity of the human body, so it is mandatory to have an adequate broad spectrum antibiotic coverage before and after your dental extraction and an optimum level of blood glucose should maintained so don't skip your insulin or any oral hypoglycemic medicines prescribed by your doctor. Pre-surgical blood glucose evaluation will be required by your dentist

You better start with antibiotics to avoid post extraction complications!!Visit your nearby dentist,get it check n start with medicine first!!