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The condition of being tightly wedged together. Food impaction can occur between the teeth due to an open contact, a poorly contoured restoration, or the plunger effect of opposing teeth. Tooth impaction occurs when a tooth is prevented from erupting into a fully functional position. The preventing agent can be another tooth, alveolar bone, or soft tissues. The most commonly impacted teeth are third molars, second premolars, and canines; the impacted tooth may lie in a variety of different positions.

Impaction vertical

Impaction mesio-angular

Types of impacted lower third molars

Subjects: Dentistry.

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