There are many steps that the dentists at Greg Campbell DDS take to strengthen, protect, and repair your teeth. However, sometimes decay or injury becomes so advanced that a root canal is the only option. During a root canal, your dentist removes the infected pulp of the decaying tooth to stop the spread of infection and help you keep your natural tooth. The canal of the tooth is cleaned, filled, and sealed. This nearly painless process stops your pain and helps you keep your natural tooth!