Q. I have had 2 veneers on my front teeth. i am a smoker and a red wine drinker. i have cut down on the red wine or i will have it through a straw, because my two front teeth have already turned a yellow colour i had the treatment done late nov 2008. i clean twice a day but they are still going a nasty colour and people have remarked now i hate smiling. What can i do ????????