Before you visit an endodontist for a possible root canal treatment, a few things would help in the diagnosis and treatment.
First, do not take any pain medications (aspirin, Ibuprofen, Advil, etc.) before your exam appointment. If you mask your symptoms, the doctor may not be able to isolate which tooth is causing the problems. Antibiotics can do this as well so timing of the exam with taking antibiotics is important.
Second, have a list of the medications you are taking. You don’t want those ugly adverse drug interactions happening.
Finally, if you are anxious, let the doctor know. There is no need to stress over this. While your mind may know it’s just like a long, boring filling, you can still be emotionally stressed. That can make it difficult to get numb. And, numbing is a good thing. So, your doctor can prescribe an anxiolytic. Chill….