There is a gap in my porcelain crown

Q. I have just had 4 porcelain crowns fitted and one of them looks out of place there is a small gap around it, is it possible that my dentist can remove this one and replace it with another?

A. Yes, if those four crowns are separate, then you can just remove that crown alone and go for a new one but if those crowns are attached and are fixed as a bridge then full replacement of all four crowns only can be done.