Hi, my son is three years old and he has started brushing teeth on his own. But, I noticed that his tooth began to stain after I stopped caring about his teeth. I use to give him coffee at morning and he eats chocolate as well. Is this the reason behind his stained teeth? I am planning to have teeth whitening ( http://www.centenarydental.com/preventative-action/teeth-whitening/[/url] ) procedures from High Park next month. Is it possible to whiten the teeth of my three-year-old son? Please give some genuine replies and suggestions. Thanks in advance.