What Is a Root Canal?

In this video, Dr. Matthew Keider explains when a root canal is necessary to treat an infection caused by bacteria entering the inner chamber of a tooth. Learn how the procedure works to remove infection, restore function, and ensure the tooth remains healthy for years—schedule your free consultation today to discuss your treatment options.

A root canal is necessary when bacteria infect the inner chamber of a tooth. Inside each tooth, there is a central chamber that houses the nerve and a small blood supply. This chamber extends through a canal that runs to the tip of the root. Under normal conditions, this area is sterile and free of bacteria. However, if bacteria enter, an infection develops, requiring treatment.

There are several ways bacteria can reach the inner chamber, but one of the most common is through a deep cavity. Since cavities are caused by bacteria, if decay extends deep enough to reach the chamber, the bacteria can infiltrate the canal, leading to infection. Once the infection is present, it cannot be left untreated, as it will continue to spread and may cause further complications.

A root canal procedure removes the infection by accessing the inner chamber of the tooth. The process involves cleaning out the bacteria and diseased tissue from the canal, thoroughly disinfecting the area, and sealing it to prevent reinfection. If bacteria have traveled through the root tip, causing an abscess, the body can heal the area after the root canal is completed.

Even though the tooth was previously infected, a successful root canal can restore its function and longevity. With proper care, a treated tooth can remain healthy and last for many years.

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