If you experience pain in your teeth when chewing or when your teeth are exposed to heat or cold, you might have a cracked tooth. A cracked tooth can be caused by several factors such as:
- Biting hard foods like ice or hard candy
- A physical injury to the mouth
- Grinding of the teeth
- A large filling
Cracked teeth can be painful because the crack causes the pulp inside the tooth to get irritated during biting or chewing. The pulp is the soft tissue under the hard enamel and dentin layers of the tooth which contains the blood vessels and nerves. When the nerve gets irritated we feel pain.