Can a Tooth Get Infected After a Root Canal and Crown?

Yes, a tooth can become infected after a root canal and crown procedure. This is a common concern among dental patients, yet the occurrence is not as frequent as one might think.

What Are the Causes of Tooth Infection After Root Canal and Crown?

Several factors can contribute to the infection of a tooth following a root canal and crown procedure. These include:

Root Cracking

A crack in the root can allow bacteria to enter the tooth, leading to reinfection. Root fractures, though not always visible in X-rays, can pose a problem for the success of the root canal.

Poor Oral Hygiene

Failing to maintain proper oral hygiene can allow bacteria to accumulate and lead to infection.

Poor Fit of Crown

If the crown does not fit properly and the margins are not sealed correctly, bacteria can find their way underneath the crown and infect the tooth.

Poor Cementation

The cement used to secure the crown can wear off over time, allowing bacteria to enter the gap and cause infection.

Untreated Accessory Canals

Not every canal in the tooth is treated during a root canal. If accessory canals are left untreated, they can become breeding grounds for bacteria, leading to an infection.

Poor Filling of Main Canals

If the main canals are not filled properly, bacteria can still find their way into the tooth, despite the root canal procedure.

Is Root Canal Treatment Safe?

Overall, the success rate of teeth with root canal treatment and crowns is very high. Root canal therapy removes the infected or damaged pulp, making the procedure safe in most cases. However, it is important to note that reinfection can still occur under certain circumstances.

Dr. Kapil Saroha from Kapil Dental Clinic and Implant emphasizes that if the root canal is not performed properly, the tooth with a crown can still get infected. Similarly, if the crown does not have a proper margin, it can also lead to infection.

Why Are Infections After Root Canal and Crown Less Common?

Despite the potential for reinfection, the risk is relatively low. Modern techniques and materials used in root canal therapy make it highly effective in eliminating the infection and preventing future problems. However, some small portions of the tooth's root may remain uninfected, especially at the tip, which can allow bacteria to persist.

Complicated Cases

In cases where the infection persists, the root canal procedure may need to be redone. Additionally, proper dental treatment and regular follow-ups can help ensure the tooth remains healthy.

Conclusion

In summary, while it is possible for a tooth to get infected after a root canal and crown, the occurrence is rare. Ensuring the root canal is performed by a qualified endodontist and maintaining proper oral hygiene are key to preventing reinfection. If you experience any concerns, it is always best to consult with a dentist to address any issues promptly.