What happened is that they took xrays which hadn't showed the abscess and started drilling. When he started to take the xrays while doing the root canal, he took a reading, checked the xray, came back into the room and said, I have some bad news. We are drilling on the wrong tooth.The tooth I'm working on needs a canal done on it but the tooth next to it is really the bad tooth and it has an abscess. I had gone in earlier with a toothache and the doc had me come back after hours so he could work on giving me some relief. They hadn't seen the abscess until then.
I have a disease in my teeth called congenital internal resorption. My immune system will turn on my own teeth and try to dissolve them from the inside out. The first indication of a problem is that the tooth abcesses and then I get pain.
I've lost about half of my teeth to it. and wound up losing both teeth that he worked on anyway.

What can I say, sometimes you eat the bear and sometimes the bear eats you.