- Let us make sure that by hurt, we all
mean that the tooth is sore and tender to bite on, touch, or otherwise
manipulate. This is a tooth which you will generally be able to point to
or touch, and be very specific as to which tooth is hurting. "This
tooth right here hurts, when I put my finger on it."
- If you mean the tooth with a previous
root canal is still sensitive to thermal changes, or if you have a
toothache in an area but you cannot tell which tooth it is, then an
entirely different problem is posed. The answer is not here. Only
two things describe a continued problem to temperatures in an area of a
tooth with a previous root canal. The most likely problem is that you
need another root canal on an adjacent or nearby tooth. The second
problem is far less likely but possible, that there is a missed or
untreated canal in the tooth having had the root canal. If it is
possible through thermal testing to absolutely confirm that the tooth
with a root canal still responds to temperature changes, then the root
canal previously performed did not treat all of the nerves, canals, or
roots and should be redone.
The part of the nerve and feeling to the
tooth that is removed with a root canal is the part that responds to
temperature changes (hots and colds) and sweets. The tooth has another set
of nerves that are never changed, removed or altered during root canal
therapy. That part feels pressure and touch.