Don't settle for using just any toothpaste. This is when it's time to buy expensive. Buy a product that has baking soda or a whitening formula and one that fights against tartar and plaque. If need be, get a recommendation from your dentist, and this will make your mouth feel instantly better.
For the whitest, brightest smile possible, watch what you eat and drink. Beverages like coffee, tea and soda are notorious for depositing unsightly yellow and brown stains on the surface of your teeth. Darkly colored juices are also potential culprits, as are certain types of gravy and fruit products. If you do consume these items, brush your teeth immediately after doing so.