I have had a root canal on my lower right second Moller. A month later I had surgery on a deveated septum.3 days after sinus surgery I had a very swollen right jaw the tooth I had root canal was so painful. I could feel my pulse in that tooth. What would cause lymph node swell an become painful?
Hello, Welcome to Chat Doctor .com.  Going through your query it seems to me that you had a periapical infection due to the failure of root canal treatment.  Now the infection has spread to buccal space because of that you have inflammation leading to cellulitis.  You need to take immediate action for proper management.  Visit an oral surgeon and get your self evaluated properly.  During mean time you need to take AUGMENTING 625 TAB trice daily.  Also, trypsin chymotrypsin combination tab twice daily. Hope you will be healthy soon. Regards .............