Q. Hi Dr Moore My dentist recently fitted a new (procera inceram) crown for me to replace an old crown. It is my big front incisor on the top. He has done a good job with the shape and colour but I can still see a blue line at the margn. My natural smile shows my gum line and the main reason I asked for a new crown was that several friends got crowns that seem to be like real teeth and have subgingival margins. When I asked my dentist for a new crown I made it clear money was not a consideration and that cosmetic appearance was my priority regardless of cost. But on fitting my new crown it is most definitely at least half a mil short of my gums and not much of an improvement over my last crown. Should I sack the dentist I have had since a child on the grounds he is a dinosaur. or should I quietly go behind his back?