A tooth treated by root canal therapy is often protected by a crown. This technique is also implemented for fractured or significantly decayed teeth. A crown can also provide protection for a tooth that has been compromised owing to trauma.

Crowns are designed to shield the visible part of teeth, match dentition of surrounding teeth, and perfectly fit the occlusal plane (an imaginary plane formed by the surfaces of the teeth when the jaw is closed). A temporary crown is placed over the treated tooth to alleviate sensitivity and minimize patient discomfort while the permanent restoration is being fabricated. See more about restorative and cosmetic dentistry.