I have a root canal filling on one of my top front teeth/right side. It’s very heavily filled. I’ve started getting the odd twinge of pain from it but on a scale of 1-10 it’s about a 3? My dentist told me it would have to come out. I couldn’t have a crown. That I would have a gap there for about 12 weeks and then he would fit a tooth. He said I’m looking at £1000 - £1500. I asked if I could have a temporary tooth while waiting for the permanent one to be fixed and he said no. This feels a bit drastic to me? Any advice appreciated.