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Do you need a root canal for every crown?
The short answer is no, not all crowned teeth require root canals.
At the core center of each of our teeth is the nerve or the pulp. The nerve not only reacts to hot, cold and traumatic stimuli but it also has a blood supply to keep the tooth moisturized from the inside so it doesn’t become too dried out and brittle. The nerve can become aggravated and even killed by harmful stimuli like cavities, heat, fracture or cracking. When cavities become large enough the bacteria can invade the nerve of the tooth causing an infection and requiring a root canal.
During a root canal the nerve is accessed through the biting surface of the tooth. Then long slender metal files are placed in the canals and the dead or aggravated pulps are removed. The canals are rinsed clean with several agents and then a permanent filling material, called gutta percha, is placed in each canal. Root canals can be long appointments.
It is possible that the vibration and heat caused to the tooth during a crown preparation irritated the nerve enough that a root canal is required but only a small percentage of crown preparations lead to root canals.
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