After much guesswork as no pain from any teeth, I had root canal work done last week on a back molar.
The abscess at that point was underneath the 3 back teeth, the third from the back had already had root canal a few months ago and the dentist was quite sure it wasn't being caused by that due to the position of the abscess.
The tooth he's done the work on no longer has the abscess underneath it, it has def got smaller but is still very much there towards the very back tooth.
It's not sore and as awful as this sounds, as it was done under sedation I can't exactly remember how long he said to leave it before being concerned the back tooth may also have an infection underneath it.
I know he said the filling on that tooth looked very close to the nerve ( not sure if this means more likely to get an infection ? ) but that he was pretty sure it was the tooth he guessed as underneath the filling he removed was lots of decay.
I remember him saying I didn't need antibiotics and to use salt water, I'm back in 10 days for the 2nd part, any dentists who can shed some light?
Thanks