You should brush your teeth for a minimum of two minutes, with the water off to conserve. You need to brush all over your teeth during this time. The inside, outside, top and bottom of all your teeth. You can find more information here: http://www.colgate.com/app/Colgate/US/OC/Information/OralHealthBasics/GoodOralHygiene/BrushingandFlossing/HowtoBrush.cvsp
