Resorption of tooth structure from outside the tooth is termed

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External resorption begins outside the tooth. Internal resorption begins inside the pulpal area. Idiopathic tooth resorption can involve the crown or roots of impacted teeth, and the cause cannot be identified. Condensing osteitis is a change in the bone near the apices of teeth that is thought to be a reaction to a low-grade infection. The mandibular first molar is most commonly involved, and the area is seen radiographically as a radiopacity below the root apex of the involved tooth.

Resorption of Tooth Structure from Outside the Tooth Is Termed