A cavity is a hole in your tooth that is caused by bacteria. If left untreated, a cavity can lead to pain, infection, and even tooth loss. While it is best to see a dentist to have a cavity filled, there are some things you can do at home to help heal a cavity and prevent it from getting worse.
One of the most important things you can do is to practice good oral hygiene. This means brushing your teeth twice a day with a fluoride toothpaste and flossing once a day. You should also avoid sugary foods and drinks, as these can feed the bacteria that cause cavities. If you have a cavity, you should also avoid chewing on hard foods, as this can damage the tooth further.