I had root canals done on my 2 upper incisors years ago, front tooth & the one next to it. Neither teeth were ever crowned. Have had no problems in all these years. I went in for a cleaning about a month ago, & the new, very young dentist, noticed a recession of the gum on my canine tooth & a hole in the filling on the incisor next to it. The one that had been root calaled. He offered to fill in the canine with filling material to cover the exposed root, & fix the filling on the incisor, so I let him. 2 days ago I started having pain in the incisor which became so severe yesterday, that I had to go back to see him. Now he's telling me not only the incisor that he refilled in infected, but the front incisor next to it is also infected & the both need to be pulled! He gave me amoxicillin to clear the infection & norco for the excruciating pain, but I'm wondering why now, after all these years of no problems with those teeth, they got infected? Could it be from him doing the work I previously mentioned? I very upset about having my front teeth extracted. Please help..