All of my teeth are yellow.  I hate them.  My friend make fun of me over my teeth being yellow.  Saying that I do not brush but I do.  I do not even have any cavities.  Just yellow looking teeth.  My parents will not pay for whitening treatments at a dentist so I looking for some home treatments.  Please advise need help.

I have metal braces on right now and I have at least a year more to go with them on.  My teeth are not as white as they use to be before getting the braces put on for an overbite.  Can I whiten my teeth with braces or will the whiting strips mess up the metal braces?

I have a friend that still has a baby teeth and he is twenty years old.  I seen it so I know he is not making it up.   I though everyone gets adult teeth.  Why does he still have two baby teeth?  Will he ever get an adult teeth in?  Or is he just odd?