There are several things you should do to keep your smile looking great. First of all you should avoid sugary drinks and snacks. You should brush your teeth twice a day using fluoride toothpaste with a small to medium size toothbrush that has soft to medium multi-tufted, round-ended nylon bristles. You only need a pea-sized amount of toothpaste and while your are brushing, you should use small circular movements to clean your teeth. Don't forget to change your toothbrush regularly and use dental floss to get the places the brush can't.