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What Causes Sudden Tooth Pain? Common Dental Emergencies Explained

by NW Emergency Dentist on May 19, 2026

Sudden tooth pain can happen without warning and quickly disrupt daily life. While some cases may seem minor at first, sharp or persistent pain often signals a dental problem that requires immediate attention.

One of the most common causes of sudden tooth pain is deep tooth decay. When cavities reach the inner layers of the tooth, they can irritate the nerve and create severe discomfort. In many cases, the pain becomes more noticeable while eating or drinking hot and cold foods.

Cracked or broken teeth are another major cause of unexpected dental pain. Even small cracks can expose sensitive areas inside the tooth, leading to discomfort and increased sensitivity. Without treatment, the...

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