Q. I have just had my front four crowns replaced with all porcelain crowns as I wanted the most natural looking replacements for my old crowns. My front left tooth was root filled some years back and has become very dark, the problem is that the darkness is now showing through my crown, it looks as though it is a shadow or stain, I opted for the all porcelain in good faith, now I realise that the metal crown covered with porcelain would not have allowed the darkness of the old tooth to show through. This wasn’t mentioned as a possibility when I had my consultation and I am now wondering if there is anything my dentist can do to rectify the problem, I just feel as though I have replaced one worry about the appearance of my teeth with another!! I also feel that if I had known this was going to happen then i would have opted for the porcelain over metal crown. What should I do? the crowns were permanently fitted this morning and the dark shadow is really noticeable!