A. Thanks for your question, if you are unhappy with the colour of your crowns, I would recommend that you discuss the possibility of replacing the crowns. If you are also unhappy with the shade of your natural teeth, you may wish to consider a whitening treatment as well. If you decide to have teeth whitening, I would advise that you have this done prior to replacing the crowns, as this will then allow the dentist to have the crowns made to match the shade of your whitened teeth. Kind Regards. Dr Kailesh Solanki