Summarize the following:
In a small bowl, mix half a teaspoon of baking soda with the quantity of toothpaste that you normally apply to your toothbrush. Stir them together. Apply the mixture to your toothbrush. Brush your teeth thoroughly for two minutes, covering your entire mouth. Spit out excess toothpaste. Rinse your mouth out with water. As an alternative, purchase a toothpaste that already contains baking soda. Since baking soda has been used a teeth cleaner for over 150 years and is fairly inexpensive, it is present in may major toothpaste brands in different quantities. Opt for a toothpaste with a high concentration of baking soda (e.g. Arm and Hammer toothpaste).

Summary:
Mix toothpaste and baking soda. Brush your teeth thoroughly. Buy a toothpaste that contains baking soda.