Learn what the latest studies say about root canals—when they’re needed, how they work, and why quality care matters.

Apical periodontitis, a chronic and hard-to-treat dental infection, affects more than half of the population worldwide and is the leading cause of tooth loss. Root canal is the standard treatment ...

They indicate infection. After the root canal, (left photo) the pulp is removed and the roots filled with a rubber-like material and adhesive cement.