Tooth pain after root canal?

[bobbean52]

I had a root canal on one of my front teeth, and had it internally bleached 4 times. It was fine when it was filled, etc., no crown, but now (just under 3 months later) it has started to become sensitive to cold, hot, extreme pressure (the other front tooth isn't) and tapping. It's not so bad that it's unbearable, but it can be pretty uncomfortable, and is gradually getting worse. It is starting now to be very mildly hurting almost constantly. Can someone tell me if I need to go the dentist again, will it subside or do I need a crown? Many thanks.

[bobbean52]

Hi,

It's a top front tooth. Thanks for your response. Went to the dentist today and had it checked with an 'electric pulp analyzer' and it was fine. The one next to it may need a root canal, and that may be what it causing the sensitivity, or so the dentist says. My other front tooth, which is fine, is also exceptionally sensitive (nothing wrong with it, just always has been), which could also be the problem. Again thank you very much, asked the same question on Yahoo Answers and got everything from 'extraction' to 'you will have to wear full dentures'. Again, thank you very much, took a lot of worry off my mind.

Bob

[Angel6809]

That's an interesting one because after a root canal is completed, the nerves that respond to hot and cold sensation within the tooth have been totally removed (or should have been)!  Therefore a root canal treated tooth should not "feel" hot or cold sensations. However the neighboring teeth may be responding to the hot/cold stimulus and causing referred pain to the treated tooth. I would suggest that you have the area evaluated by your general dentist or by an endodontist.   Just out of interest, when you say a "front tooth", is this a top front tooth or a bottom front tooth?