Make an appointment with a dentist if you suspect you have a cavity. Your dentist will inspect your teeth for evidence of decay and symptoms. After your dentist has determined that you have a cavity, the following step is to ascertain what type of cavity you have. There are three different kinds: Smooth surface cavity – This cavity type is located on a tooth's smooth surface Root cavity – This cavity-type develops on a tooth's surface above the roots Pit and fissure cavity – This cavity type is found on a tooth's chewing surface