no problems for 50 years, then had to get rid of the top 2, they were easy. Hopefully the bottom never give me a problem. had to get rid of a molar last month though. Different story, they have a hard time getting my mouth numb, thought we would go the little blue pill that puts u out without putting u out. Was supposed to take an hour +, went under at 8:20am, woke up at 1:30 pm. Helluva an ordeal. Glad i don't remember it