Question: What does it mean if the nerve of my tooth is exposed?
Explanation: An exposed nerve means the pulp is directly open to the oral environment, usually through a deep cavity, a fracture, or trauma. It appears as a pink or red spot, sometimes bleeding, at the base of a cavity or on a fracture surface. It is exquisitely painful to air, cold, and touch. Bacterial contamination begins immediately. Treatment within 24 hours offers the best chance of preserving pulp vitality through pulp capping or partial pulpotomy. Delay makes root canal treatment or extraction inevitable.
Related Questions:
Can an exposed nerve heal on its own?
No. Once the pulp is open to the mouth, bacterial contamination is continuous and the pulp cannot wall itself off effectively. Without treatment, it becomes necrotic and infected. The apparent settling of pain reflects the nerve dying, not the tooth healing.
What is a pulp cap?
A procedure where a biocompatible material, typically mineral trioxide aggregate or Biodentine, is placed directly onto a small, recent, clean pulp exposure to stimulate a dentine bridge and preserve vitality. Success depends on the exposure being small, recent, and in a healthy pulp.
How long do I have before a root canal becomes unavoidable?
Roughly 24 to 48 hours for the best chance of vital pulp therapy in a small traumatic exposure. Exposures caused by deep decay have a poorer prognosis because the pulp is already inflamed. Beyond a few days, contamination is deep and root canal treatment is generally needed.
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