Without a root canal, the pulp infection will spread to other teeth and seep into the bloodstream.
Dental fractures and severe tooth decay can go deep enough to reach the root and pulp.
If the dentist has recommended a root canal treatment, then there is a chance that you have an infected tooth.
To avoid more difficulties, you must maintain a close eye on your dental health, from brushing and flossing to eating healthy and visiting your dentist.