The process of cleaning and filling the entire root canal system to restore health and function is called Endodontic treatment. Not only is it important to seal the canals but to provide a top or coronal seal. Even the best root canal treatment will fail if bacteria manages to ingress the root canal system. Hence it is imperative you see your dentist for a crown or a coronal filling after the Endodontic treatment has been completed to ensure a good long-term prognosis.