The length of the procedure varies depending on the tooth's complexity and the severity of the infection. Generally, it can take one to two visits to complete a root canal.

In many cases, a crown is recommended to protect the tooth and restore its function after a root canal, especially for molars and premolars, which endure substantial biting forces.

You may experience some sensitivity or discomfort for a few days following the procedure. Over-the-counter pain medications can help alleviate any discomfort.

The only alternative to a root canal is extracting the infected tooth. However, this can lead to other dental issues and should be considered as a last resort.

While uncommon, it's possible for a tooth to become re-infected if there is a breakdown in the restoration or if new decay forms. Regular dental check-ups and good oral hygiene can help prevent reinfection.