Your tooth will last as long as it is healthy. If the pulp has been removed, then the tooth can still be saved. However, if the tooth is infected or damaged, then it will eventually fall out.
Your tooth will last about as long after a root canal as it will before a root canal. The reason is because the pulp in a tooth has been removed, and the tooth is no longer living. A root canal is the only way to save a tooth that is already dead.
The average length of time that a tooth lasts after a root canal is between 4 and 5 years.
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Your tooth will last as long as it is healthy. If the pulp has been removed, then the tooth can still be saved. However, if the tooth is infected or damaged, then it will eventually fall out.