Hi, last July I had a bad cavity filled. The dentist told me I still may need a root canal. I went to a new dentist in January because my tooth was very sensitive to cold and hot.  The dentist said the gums receded and gave me a prescription tooth paste. He did xrays and said everything looked fine with the filling and I would not need  a root canal. Just in the past week I am having throbbing pain,  I can feel pain in my lymph nodes and my neck. I have an appt tomorrow with an endodontist.  What does the pain in my neck and lmph nodes mean? Could something have spread?
Thanks for your query. I have gone through your query. The pain in the lymph node and neck region is because of the infection in the tooth. The infection in the teeth will be Chat Doctor.  Consult an endodontist and get the tooth treated with RCT. Meanwhile, you can take a course of antibiotics like amoxicillin 500\u00a0mg TID and metronidazole 400\u00a0mg BID (if you are not allergic). Once the treatment is started the pain will come down. I hope my answer will help you. Take care.