Tomorrow I'm scheduled for a root canal. The upper left teeth had been hurting me off and on for years. My dentist told me it wasn't my teeth and sent me to ENT Doc who also sent me to an Allergist for testing. Early this year I received a sinus surgery just to "open up" area to see if that helped. Well....long story shortened, my tooth died. I'm pissed to put it lightly as I have made numerous runs and at great expenses to figure out why I was in pain. Last week I went back to the same dentist office (though saw the other dentist in the office) because I had a sore above the tooth that wouldn't go away and hurt. Low and behold....it is the tooth troubles!! As always...Nervous Nelly here.