This is a test of commonsense. Complete the next sentence:

How to treat cavities
Understand the signs and symptoms of cavities.
It is important to be able to recognize the signs and symptoms of cavities as soon as they appear. This way, you can get a head start on treating them and prevent them from becoming larger and more painful over time.
If you experience one or more of the following symptoms, you may have a cavity : Experiencing tooth sensitivity or a toothache. You might also feel mild-to-sharp pain when eating cold, sweet or hot foods.