Ideas? what medicine do dentist use to numb the mouth?

Answer:: Dentists use topical and local anesthetics to numb teeth, jaw and gums. Why did you ask that question?

No OTC: If you're asking is there a medical-grade anesthetic available otc to mask the symptoms of a problem that you have, probably an infection, the answer is no. If you're having a problem you'll have to see a dentist for dental treatment, not the oral hygiene lisle in the supermarket.