hello,
first of all i'd like to apologize for my poor english(not my mother
tongue,as you can understand).
i have a couple of questions about root canal and pain issues.
i had a root canal on my right lower third molar(the last one) 2 weeks ago :
i had terrible pain and the dentist said ,even though there was no infection
under the tooth already,the cavity was so deep that it had reached the pulp
and so a root canal therapy was needed.
on the first "session" he found 3 root canals and treated them and left the
tooth open with only some medicated cotton in it. the pain went away day
after day.
on the second appointment (last week)he didn't give any anesthesia because
the nerves were "gone" on the first one but when he tried to put the small
"screwdriver" into one canal (the "posterior one") i had a lot of pain so he
shot some anesthesia right into it (only into it)and all went fine. the
other 2 didn't need any shot as i didn't felt any pain when he touched them.
at the end of the treatment he closed the molar with some temporary filling
but i had to return the day after because the pain was terrible! he removed
the temporary filling and in a few hours the pain was gone. he couldn't do
anything more because he had other patients waiting but i've been ok since
he removed the temporary filling.
my questions: why i felt pain when he touched my posterior canal(he didn't
go very deep:he inserted "the little screwdriver" only for a couple of mm)?
if the nerve was taken away on the first appointment how is it possible to
still feel pain?
and why if the tooth is ok if it's left open ut it gives a lot of pain if a
temporary filling is put into it?
thanks for your kind help