Why is a crown necessary whenever a tooth has a root canal?

Teeth that have had endodontic therapy (Root Canal Treatment) are technically dead - they no longer have blood, lymph, or nerve supply. Even though the teeth still work, they are brittle and susceptible to fracture from chewing. We place crowns on the back (posterior) teeth to protect them against potential fracture from day to day use. Front teeth that have had root canal treatment may not need crowns, but only reinforcing posts for strength. Dr. Anderson discusses the differences whenever a root canal is performed.


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