Hi
I posted here a while back about having an RCT after an inlay and
previous filling failed.  I had the RCT just before Christmas.  As one
of  the 3 roots bled, filling was postponed for 72hrs and then a
composite used to plug the tiny access after root filling, (rather
than removing the entire porcelain inlay and waiting for a new one.)

Tooth was great for 2 weeks no pain perfect........then became almost
instantly pressure sensitive to even being touched with my tongue.
Over the last 2 weeks it has all the symptoms before the RCT, pulsing,
hot sensitive, but increasingly less intermittently.  Upon close
inspection one of the front cusps(of which only the outward facing
half is original tooth the other being inlay) has a perpendicular
crack side to side.  A couple of tiny white spots are forming at the
gum.

I'm guessing an infection. This is my 8th or 9th visit.  How many
times do I still keep going to the same dentist, each time the tooth
seems to deteriorate.  How long should one accept this (having spent
£500/$900 in total) before I seek a 2nd opinion and have to start
paying all over again !!  Or is this just plain unlucky and I'm in the
5/10%  bracket of RCT  failures ?

Thanks