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Table III

Clinical and radiological features of non-keratinized odontogenic cysts [1,2,7].

  Clinical features Radiological features
Radicular cyst Most common odontogenic cyst. Invariably associated with a necrotic tooth. It may become residual after removal of the causative tooth without its enucleation. Well-demarcated unilocular radiolucency at the root apex (apical cyst), or along the lateral root surface (lateral cyst) or found at a site of previous tooth extraction (residual cyst) (Fig. 1A).
Inflammatory collateral cyst Always associated with a partially or recently erupted vital teeth with historic of pericoronitis or inflammation. Buccal aspect of mandibular molars is the most common location. Well-demarcated or corticated unilocular radiolucency involving the buccal or distal aspect of a partially erupted molar (Fig. 1B).
Dentigerous cyst Always associated with an impacted tooth, attached to its cemento-enamel junction Well-defined unilocular radiolucency, surrounding the crown of an impacted tooth (Fig. 1C).

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