Toothpaste these days can achieve anything from whitening your teeth to help strengthen your enamel. There are special formulated toothpaste for those who have sensitive teeth, get canker sores, or prefer natural ingredients. Dentist.net offers a wide variety of all these types and more. Using a toothpaste with your toothbrush helps loosen plaque and kill germs that cause bad breath so you can maintain a healthy oral hygiene. Studies have shown that by brushing your teeth twice a day with a toothpaste that contains fluoride reduces the risk of tooth decay.