Cracked teeth may be the source of many types of problems, including pain when chewing, temperature sensitivity, or the release of biting pressure. It is also common for resulting pain to come and go, making it difficult to diagnose the cause.
Chewing can cause movement of the cracked pieces of your tooth, and the pulp within the tooth becomes irritated. At the same time, when biting pressure is released, the crack can close quickly, resulting in sharp pain. Eventually, the pulp will become damaged and tooth will consistently hurt, even when you are not chewing. It is possible that cracks can lead to infection of the pulp tissue, which can spread to the bone and gum surrounding the problematic tooth.
Craze lines are tiny cracks that affect the outer enamel of your teeth. These cracks are very common in adult teeth. Craze lines are very shallow, cause no pain, and are usually of no concern beyond appearances.