A tooth is “cracked” when there is a fracture in the tooth. The extent and severity of the damage to the tooth depends on the nature of the injury.
Cracked teeth show a variety of symptoms, including erratic pain when chewing, possibly with the release of biting pressure, or pain when your tooth is exposed to temperature extremes. In many cases, the pain may come and go, and your dentist may have difficulty locating which tooth is causing the discomfort.
When the outer hard tissues of the tooth are cracked, chewing can cause movement of the pieces, and the pulp can become irritated. Eventually, the pulp will become damaged to the point that it can no longer heal itself.
The tooth will not only hurt when chewing but may also become sensitive to temperature extremes. In time, a cracked tooth may begin to hurt all by itself. Extensive cracks can lead to infection of the pulp tissue, which can spread to the bone and gum surrounding the tooth.