Root canal throbs from thime to time.... why?

I had a root canal 3 months ago and the permanent crown placed to months ago. To make a long story short the root canal was redone, and after several opinions it was agreed that a crack is causing the problem. I am getting an extraction tomorrow. 1 month ago I had another root canal on the tooth directly below the one I am having extracted. (its been a bad year) Cracked tooth syndrome caused the need for this rct. This lower tooth is still covered by the temporary crown. This lower tooth still aches from time to time, although very minor. It does not appear to have any pressure when biting or sensitivity to cold or hot. I have been back to the endo that performed the root canal and he xrayed again and checked everything and said it looked perfect.(all 4 roots cleaned out and sealed) A second endo said the same thing. The bite is perfect and has been checked each time just to be sure. I am wondering if the upper tooth could be causing some reflex pain to the lower tooth? Thanks.

Root canal throbs from thime to time.... why?
It's the nature of the beast. If a little thread of nerve is left around (as it often is) you feel the throbbing for a while
Reply:It is possible to have referred pain. It is also possible to still feel some discomfort in the RCT site as well. Sometimes it takes more than 3 months for the discomfort to go away.





You stated that you have gone back to the endodontist and also had a second opinion. Obviously, the RCT was successful. I wouldn't worry about it too much. Take some ibuprofen for the pain. This is also an anti-inflammatory to help reduce any inflammation caused by the trauma of RCT.
Reply:The upper could be causing this pain sensation, but be aware that a cracked tooth will NOT show in an x-ray unless the parts are displaced from one another. Give it a couple of weeks after you have the upper tooth removed to decide if the pain is gone totally.





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