White teeth are a major part of many people's image and they are a huge part of our culture. From advertisements to movie stars, a bright smile is something that is highly desired.
Brushing your teeth regularly is a good thing but it is not the only thing that you need to do if you want to keep your teeth healthy.
Your teeth may still be stained (1) even if you brush them every day. Stains on your teeth could be caused by different factors like coffee, smoking, red wine, or natural genetic factors.