For how long you can take ibuprofen every day? i've been taking 400 mg daily for 12 days and i have to take it for 10 more days for a toothache until the day of my appointment. is it safe?

The dose you described is safe to take, however, going 10 days with a diseased tooth may not be wise. If there is an infection it could spread while you are waiting. Contact the local dental school for an urgent visit.

Ibuprofen reduces inflammation and thereby reducing pain. It does not get to the root cause of the problem. It can cause stomach irritation, inflammation, ulcers, and kidney damage. See a dentist and a primary care doctor

Most toothache is caused by infection. Pain killers will not cure infection. Antibiotics may control spread of infection and reduce inflammation, but will not cure Detal infection. For cure you need actual dental treatment. To have to wait 3 weeks for an appointment for an acute situation is problematic. May be better toes specialist Endodontist,