Cavities are a sign that your teeth are not healthy. This condition can trigger tooth pain. This condition can be overcome by handling appropriately according to its severity. Generally the cause of cavities is plaque, which is a sticky substance in the mouth which is mostly created due to a pile of germs or bacteria that turn food into acid. Then, the acid in the plaque can damage the protective tooth enamel to make cavities. If left unchecked, dental plaque can accumulate and become tartar which can disrupt the structure and health of teeth. How to deal with cavities Cavities are often painless. The pain generally arises only when the cavities in the teeth become enlarged, affect nerves, or cause teeth to break. Cavities can also occur after consuming cold or hot food or drinks. There are several ways doctors can do to cope with the pain of cavities, including: Give fluoride If the holes in the teeth are still in the initial stages, aka very small, fluoride might be used