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Definition of Toothache

Toothache: Pain in the tooth or gum. The most common cause of a toothache is a cavity or an injury to a tooth that exposes the pulp, which is heavily supplied by nerves.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=25128
Last Editorial Review: 3/19/2012

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