Your mothers concern is feasible since she is diabetic. But she should not worry. Diabetes
causes various types of oral and dental problems from which one is loosening of teeth. If her dentist
has told to get all removed, then the condition of her teeth might not be in the condition to be saved. So she can go for extraction but other condition shave to be fine. She should be taking proper medicines for diabetes and should get fasting and post prandial blood test
done before undergoing procedure. If her sugar levels are not controlled then she has to wait till it get under level. Also on the day of extraction she should not go empty stomach otherwise she might suffer from hypoglycemic attack.
Rest her dental surgeon will explain depending on her condition.
dr deepali, dental surgeon, lucknow