Q. Hi, I have a root canal filling in the right 2nd Incisor. The tooth has become dark in colour and a little painful. I made an appointment with my dentist, under NHS, who tells me that the tooth must come out. This alarmed me a little, to the extent that i broke out in a cold sweat! He told me that this was a specialist treatment that needs to be done at the local hospital, at a cost! Is this correct? Meanwhile i am on antibiotics!! Many Thanks,