Impacted third molar

Impacted third molar
The third molar is the tooth that presents the highest index of impaction of the whole dental arch. The reason for this is usually lack of the space that is required for its eruption. The indications for extraction (exodontia) include a lack of space for eruption, an abnormal position of the tooth, pericoronitis, caries, or the presence of cysts. Extraction is contraindicated when sufficient space is available for eruption of the tooth, if the patient’s state of health is compromised, or in teeth that have shown no symptoms despite being impacted for 30 to 35 years (15).

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