human
What are some of the most common causes of a cracked tooth?
assistant
1.  Tooth decay is one of the most common causes of a cracked tooth.
2.  Trauma to the tooth, such as biting down on hard objects or falling and hitting your mouth, can also cause a cracked tooth.
3.  Extraction of a tooth can also lead to a cracked tooth due to the forceful removal of the tooth from its socket.
4.  A cracked tooth may be caused by an underlying systemic condition like diabetes, osteoporosis, or kidney disease.