Can Anyone Who Wants To, Get There Teeth Bleached?

Im Not Talking about If your old enough and Stuff.
I Mean Like Do Your teeth have to be a certain way,
Or do your Teeth have to be in good Shapee?
(:

Suggestion:

You should have healthy teeth before you whiten them. If you have cavities your teeth can be very sensitive to the bleaching material.
If you have large fillings or crowns in your front teeth then bleaching might be a waste of money unless you plan to replace them after bleaching.
Also the older you are the less sensitive your teeth will be during and after bleaching.
Make sure you get your teeth cleaned before you start as any tartar or other deposits can prevent the bleaching material from getting to the tooth.