Yeah, why didn't the dentist remove it? Some NHS dentists are beyond a joke.
Let me tell you a grim story to take your mind off things (if you don't want to get the dental willies, look away now).
So I stupidly fell onto my face and my front tooth was pushed up into my gum, fucking agony. Went to hospital, they said it might come down on it's own. It didn't. Faffed about, got a veneer eventually.
After a couple of months it started hurting. Went to dentist. He said it was fine, even though I insisted it hurt like hell. This went on for a couple of years, no-one listened to me, and the veneer was coming off but they wouldn't replace it.
Went to a private dentist who said it was horribly infected, did surgery on me and found a COTTON WOOL BALL INSIDE MY ROOT CANAL. It was left there by the previous dentist.
Cue ridiculously expensive treatment, huge levels of pain and my enduring hatred of the NHS.