What about dental Novocain shots?

Since developing LE in my neck, what do you do about the dentist?  Of course I let him numb the area but I wonder if this didn't help in my LE.  I started with this tooth back in October with the root canal and finaly finished up yesterday.  He also did a filling on the bottom..the reason for the shots yesteday.  All on my LE side.

I am happy to say that today was my last day in the clinic.  I am down and feel so much better now that most of it is out of my neck, shoulder and back.  Arm went down some too.  Just waiting on new sleeve and I can quit wrapping.  Go back in three weeks for a recheck.

I noticed it in May about two weeks after being in the dentist office.  I did more on my neck the first few days this time and so far it's still okay.  She will recheck me in three weeks just to make sure the swelling stays down.  I personally think it played a roll.  She said the swelling that is left may be there forever.  Thankfully the pain is gone.