Q. Im a 23yr old ex smoker and i have some tooth staining but recently i have become paraniod that it is becoming more noticable. It also seems to vary from day to day and can often be alot worse in the mornings, with brown/yellow marks on my teeth but by the evening be whiter again. Would bleeching be an option?, it really only seems to affect my upper two front teeth. I have been looking into Veneers but obviously they can be very expensive.