My tooth hurts when I eat hot or cold food or drinks

Question:

My tooth hurts whenever I eat hot or cold food or drinks.  If feels like a sharp pain, then it goes away.  What does this mean?

Answer:

This is a sure sign of reversible pulpitis.  The feeling that you are experiencing is caused by exposed dentin.  Remember that dentin is normally covered by enamel (see article on tooth anatomy), if for some reason a portion of dentin is left uncovered, you will usually feel sensations of short, sharp pain when exposed to hot or cold substances.  Exposed dentin can be caused by a cavity, a defective filling/restoration, or recent dental work.  The good news is that this problem can be fixed easily, the dentin just needs to be covered.  Your dentist will be able to give you a filling, simply fix your existing filling, or a pulp cap if necessary.  However, don’t wait too long.  Reversible pulpitis, if left untreated, can turn into irreversible pulpitis.  Unfortunately, irreversible pulpitis can only be treated with root canal therapy, which costs a lot more in the end.  So be sure to act now by visiting your dentist.

Good luck!