husband had root canal done behind front tooth eight years ago. has had a burning sensation behind front teeth since than. has taken antibiotics, Lyrica, capsaicin, new caps, had the nerves cut on top of the mouth, spent thousands on finding a cure. Nothing helps for long.  Help
Thanks for your query, I have gone through your query. The burning sensation following too canal treatment can be because of the nerve injury while giving local anesthesia, or it can be a burning mouth syn Chat Doctor.  Nothing to be panic, consult a good oral physician and get it evaluated. Meanwhile you can take nerve regenerating