What is essential for treating a crown fracture effectively?

Proper sealing of the dentin is crucial for treating a crown fracture effectively because it helps to protect the sensitive underlying structures of the tooth. When a crown is fractured, the dentin layer of the tooth can be exposed, making it susceptible to infection, sensitivity, and further damage. Sealing the dentin with an appropriate material can help prevent bacteria from entering the tooth and causing additional complications, such as pulpitis or abscess formation.

Moreover, sealing minimizes sensitivity to hot and cold stimuli, providing relief to the patient and allowing for better long-term outcomes. The sealing material acts as a barrier, helping to maintain the tooth's integrity and function until a more permanent restoration can be completed, potentially including a crown or filling.

Other options may provide some benefits in certain contexts, but they do not address the fundamental need to protect the exposed dentin and maintain the health of the tooth after a fracture.