Next to the common cold, tooth decay (also known as cavities) is the most common disease in the entire world. It’s estimated that about 90% of American adults have had a cavity at some point in their lives. If you have, then you know how inconvenient they can be. They might even be painful, and you have to take time out of your day to visit your dentist for a filling. Once you have a cavity, is there a way to treat it besides getting a filling? How can you prevent decay in the first place? Read more to find out.