Q. Hi there, I have had my 2 front teeth crowned as they discoloured after root canal treatment. The crowns have been great however discoloured at the start of the gum, a darker blackish colour. I was told later that this is the base of the crown – can anything be done about this? I want to have straighter front teeth, but don’t want to crown or veneer them, as I was told that the crowns I have are the last chance to save my front teeth, as if I lose these there would be little I could do about replacing them. Naturally, I’m apprehensive about getting anything else done, so would lumineers be a better option as they require little tooth preparation? Also, I have really sensitive back teeth, would lumineers help with this too? Thanks.,