I've had terrible service with Katsur Dental in New Kensington. I got a root canal about 4 years ago and everything was fine until maybe a year and a half ago and then I got an abscess right above the tooth I got a root canal on.
I brought up to the dentists and every time they would say "oh that happens all the time with root canals" and never did anything about it, they didn't even know I had my root canal done there.
So about a month ago they finally prescribed me amoxicillin (which isn't affective for mouth infections, penicillin is supposed to be used). So I took it for about 10 days and it didn't go away, now for about a 3 days I've had terrible pain in my mouth and an abscess the size of a quarter and it's still getting larger!