Can Root Canal Treated Teeth Still Crack Under Pressure?

Dentures and dental crown issues?

Hello, doctor.
I would like to ask if a molar that has undergone root canal treatment, received a crown for protection, and had a post placed inside, can still fracture? If it does fracture, what signs would indicate this? Can it be detected through an X-ray?

Niming, 20~29 year old female. Ask Date: 2018/09/10

Dr. Zhu Guanyu reply Dentistry

Hello,
1.
Based on your description, it is difficult to accurately determine whether "teeth will break after making dentures." I apologize for this.

2.
Obvious cracks can be detected through X-ray examination, but it is more challenging to identify micro-leaks.

Thank you for your message.
Wishing you peace and good health.

Sincerely,
Dr.
Kuan-Yu Chu
Department of Dentistry, Taoyuan General Hospital, Ministry of Health and Welfare

Reply Date: 2018/09/10

More Info

Yes, teeth that have undergone root canal treatment can still crack under pressure, even if they have been protected with a crown and reinforced with a post. Root canal treatment removes the nerve and blood supply from the tooth, which can make the tooth more brittle over time. This brittleness, combined with the loss of structural integrity due to decay or previous trauma, can increase the risk of fracture.

When a tooth cracks, the symptoms can vary depending on the severity and location of the crack. Common signs include:
1. Pain: You may experience sharp pain when biting down or chewing, which can indicate that the crack is affecting the tooth's structure.

2. Sensitivity: Increased sensitivity to hot or cold temperatures can occur, especially if the crack exposes the inner dentin of the tooth.

3. Swelling: In some cases, swelling in the gums around the affected tooth may be present, indicating an underlying issue.

4. Visible Cracks: Sometimes, you may be able to see a crack on the tooth's surface, although not all cracks are visible.

X-rays can help identify some types of cracks, particularly those that extend below the gum line or into the root. However, not all cracks are detectable on X-rays, especially if they are small or located in areas that are difficult to visualize. In some cases, a dentist may need to perform additional tests or use other imaging techniques to assess the condition of the tooth.

If you suspect that your root canal-treated tooth may be cracked, it is essential to consult your dentist as soon as possible. Early intervention can help prevent further damage and may allow for more conservative treatment options. Depending on the severity of the crack, treatment options may include:
- Monitoring: If the crack is minor and not causing significant symptoms, your dentist may recommend monitoring the tooth for any changes.

- Crown Replacement: If the crown is damaged or if the crack extends into the crown, replacing the crown may be necessary to restore function and protect the tooth.

- Root Canal Retreatment: If the crack has led to reinfection, retreatment of the root canal may be required.

- Extraction: In severe cases where the tooth is significantly compromised, extraction may be the only option.

In conclusion, while root canal-treated teeth can be protected with crowns and posts, they are not immune to cracking. It is crucial to be aware of the signs and symptoms of a cracked tooth and to seek prompt dental care if you experience any concerning symptoms. Regular dental check-ups can also help monitor the health of your teeth and catch any potential issues early on.

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