A cracked tooth can cause anything from mild discomfort when chewing to significant pain and sensitivity. Sometimes, the crack is difficult to see, making it challenging to understand why a tooth suddenly hurts.
Teeth can crack for several reasons, including biting hard foods, dental injuries, teeth grinding and weakened tooth structure. Treatment depends on the location, depth and severity of the crack.
Understanding the causes and warning signs can help you recognise when to seek dental care.
What Causes Teeth to Crack?
Although tooth enamel is strong, teeth can become damaged under repeated pressure or sudden impact. Several factors can contribute to cracks.
1. Biting Hard Foods
Biting ice, hard lollies, unpopped popcorn kernels or other hard objects can place excessive pressure on teeth.
A sudden force may cause a crack, particularly if the tooth already has a large filling, previous damage or weakened structure.
2. Teeth Grinding and Clenching
Grinding or clenching your teeth, particularly during sleep, can place repeated pressure on them.
Over time, this pressure may contribute to tooth wear, small cracks or damage to existing restorations. A dentist can assess whether grinding is occurring and discuss suitable management options.
3. Dental Injuries
Falls, sporting injuries, accidents and impacts to the face can crack or break a tooth.
Even if the tooth looks relatively normal, an injury may affect its internal tissues. Seek dental advice after a significant impact, especially if pain, sensitivity, looseness or swelling develops.
4. Large Fillings or Weakened Teeth
A tooth with extensive decay or a large existing filling may have less natural tooth structure available to withstand chewing forces.
If a tooth is significantly weakened, a dentist may recommend a restoration to protect the remaining structure, depending on the circumstances.
5. Existing Tooth Damage
Untreated decay, worn restorations and previous dental trauma can weaken a tooth and make it more vulnerable to further damage.
Addressing these problems early may help reduce the risk of complications.
What Are the Signs of a Cracked Tooth?
Cracked teeth do not always cause obvious symptoms. Some cracks affect only the outer enamel, while others extend into deeper layers.
Common warning signs include:
- Sharp or intermittent pain when biting or chewing.
- Discomfort when releasing pressure after biting.
- Sensitivity to hot, cold or sweet foods.
- Pain that comes and goes without an obvious cause.
- A visible crack or chipped section of a tooth.
- Swelling or tenderness around the affected tooth in some cases.
These symptoms can also occur with tooth decay, damaged fillings or other dental problems. A dental examination is needed to determine the cause.
If you experience significant pain, swelling or a broken tooth, seek prompt dental advice. You can also read about the symptoms that may require emergency dental assessment.
How Are Cracked Teeth Treated?
Treatment depends on how much of the tooth is damaged and whether the crack extends into the pulp, which contains the tooth’s nerves and blood vessels.
1. Dental Bonding or a Filling
Minor chips or limited damage may sometimes be repaired with an appropriate filling or bonding material.
The treatment depends on the location of the damage, the amount of remaining tooth structure and the forces placed on the tooth during chewing.
Where appropriate, a dental filling may help restore the tooth’s shape and function.
2. A Dental Crown
If a tooth is significantly weakened or damaged, a crown may be recommended to cover and protect the remaining tooth structure.
A crown can restore the tooth’s shape and function, but its suitability depends on the extent of the damage and how much healthy tooth remains.
3. Root Canal Treatment
If a crack affects the pulp and causes irreversible inflammation or infection, root canal treatment may be necessary.
The procedure involves removing the affected pulp tissue, cleaning the root canal system and sealing it. The tooth may also need a suitable restoration to protect its remaining structure.
4. Tooth Extraction
If a crack extends too deeply or the tooth cannot be restored predictably, extraction may be necessary.
A dentist can assess whether the tooth can be saved and explain the available options.
Can a Cracked Tooth Heal on Its Own?
A structural crack in tooth enamel or deeper tooth layers cannot heal on its own.
Minor surface damage may not always require extensive treatment, but a suspected crack should be assessed if it causes discomfort or raises concerns.
Leaving a significant crack untreated can allow the damage to progress and increase the risk of pain, infection or tooth loss.
Early assessment helps determine whether monitoring, a restoration or another treatment is appropriate.
What Should You Do If You Crack a Tooth?
If you suspect a cracked tooth, avoid chewing hard foods on the affected side and arrange a dental assessment.
Until you receive professional advice:
- Choose softer foods if chewing is uncomfortable.
- Avoid foods or drinks that trigger sensitivity.
- Keep the area clean with gentle brushing.
- Do not attempt to glue or repair the tooth yourself.
- Seek prompt dental care if pain or damage is significant.
Facial swelling, fever or worsening pain warrants urgent assessment. Difficulty breathing or swallowing, particularly with facial or neck swelling, requires immediate emergency medical attention.
How Can You Reduce the Risk of Cracked Teeth?
Although not every crack can be prevented, certain habits may reduce the risk of dental damage.
Avoid chewing ice and other hard objects, wear an appropriate mouthguard for contact sports, and seek advice if you grind or clench your teeth.
Regular dental check-ups can also help identify decay, worn restorations and other problems that may weaken teeth.
If you notice a damaged filling or persistent discomfort, arrange an assessment rather than waiting for the problem to worsen.
Conclusion
Cracked teeth can result from hard foods, grinding, injuries, decay or weakened tooth structure. Symptoms vary, and the most appropriate treatment depends on the severity and location of the damage.
If you suspect a cracked tooth, a dental assessment can help identify the problem and determine whether a filling, crown, root canal treatment or another option is appropriate.
Frequently Asked Questions
Are cracked teeth always painful?
No. Some cracks cause little or no discomfort, while others cause sharp pain when biting or sensitivity to temperature. A dental examination is needed to assess a suspected crack.
Can a dentist save a cracked tooth?
In many cases, treatment may help preserve the tooth. The outcome depends on the crack’s depth and location, the condition of the pulp and the amount of healthy tooth remaining.
Does a cracked tooth always need a crown?
No. Minor damage may be managed with bonding or a filling, while more extensive damage may require a crown or another treatment. The appropriate option depends on the clinical findings.
When should I seek emergency dental care for a cracked tooth?
Seek prompt care if a crack causes significant pain, follows an injury or is accompanied by swelling. A broken or knocked-out permanent tooth also requires urgent attention.