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Cracked Teeth

In today's world, we are living longer, more stressful lives than ever. Because of this, our teeth may be exposed to many more years of potentially detrimental habits such as clenching, grinding, and chewing on hard objects.

Habits such as these put our teeth at greater risk of cracking. To prevent additional damage damage to the tooth structure and tissue, cracked teeth often require treatment.

While a crack in the tooth may not be visible, you may experience symptoms such as erratic pain when chewing, and pain or sensitivity to heat and cold. In many cases, the pain may come and go, making it difficult for your dentist to locate the source.

Why Cracked Teeth Are Painful

When the hard outer tissues of the tooth are cracked, chewing can cause movement of the pieces, irritating tooth pulp. When biting pressure is released, the crack can close quickly, resulting in a momentary, sharp pain. Irritation of the dental pulp can occur every time the tooth is used for chewing.

Over time, the pulp will become damaged to the point where it can no longer heal itself. The tooth will not only hurt during chewing but may also become sensitive to extreme temperatures. In time, a cracked tooth may begin to hurt all by itself. Extensive cracks will lead to infection of the pulp tissue, even spreading to the bone and gum tissue that surround the tooth.

Types of Cracked Teeth

There are many different types of cracked teeth. The treatment and outcome for your tooth depends on the type, location, and extent of the crack.

Craze Lines

Craze lines are tiny cracks that affect only the outer enamel. These cracks are extremely common in adult teeth. Craze lines are very shallow, cause no pain, and are of no concern beyond appearance.

Fractured Cusp

When a cusp (the pointed part of the chewing surface) becomes weakened, a fracture sometimes results. The weakened cusp may break off by itself or have to be removed. When this happens, the pain will usually be relieved. A fractured cusp rarely damages the pulp, so root canal treatment is seldom needed. Your tooth will usually be restored with a full crown by your dentist.

Cracked Tooth

Some cracks extend from the chewing surface of the tooth vertically toward the root. A cracked tooth may not be completely separated into two distinct segments. Because of the position of the crack, damage to the pulp is common. Root canal treatment is frequently needed to treat the injured pulp.

Your dentist will restore your tooth with a crown to hold the pieces together and protect the cracked tooth. At times, the crack may extend below the gingival tissue line, which requires extraction.

Split Tooth

A cracked tooth can sometimes progress into a split tooth. The split tooth is identified by a crack with distinct segments that can be separated. If a tooth is split, only part of it may be salvageable.  What part depends on the position and extent of the crack. In rare instances, endodontic treatment and a crown or other restoration by your dentist may be used to save a portion of the tooth.

Vertical Root Fracture

Vertical root fractures are cracks that begin in the root of the tooth and extend toward the chewing surface. They often show minimal signs and symptoms and may therefore go unnoticed until the surrounding bone and gum become infected. Treatment may entail extraction of the tooth. However, endodontic surgery is sometimes appropriate if a portion of the tooth can be saved by removal of the fractured root.

Preventing Cracked Teeth

While cracked teeth are not completely preventable, you can take some steps to make your teeth less susceptible to cracks.

  • Don't chew on hard objects such as ice, unpopped popcorn kernels, or pens.
  • Don't clench or grind your teeth.
  • Wear a mouthguard or protective mask when playing contact sports.

Early diagnosis is important. Even with high magnification and special lighting, it can be challenging to determine the extent of a crack. A cracked tooth that is not treated will progressively worsen, and eventually result in the loss of the tooth. Early diagnosis and treatment are essential to saving these teeth.