How does a tooth become inflamed or infected?
There are multiple reasons why teeth can become inflamed or infected. The most common reason is decay that extends too far into the tooth. If a cavity is too deep, the bacteria in the cavity can produce damage to the pulp causing it to become inflamed. If the decay progresses far enough, bacteria can actually enter into the pulp and cause an infection. This is commonly called an abscess. In addition to cavities, cracks in teeth and trauma to teeth can cause inflammation and infection.
