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what are the DD of dentigerous cyst?
Dental cysts that related to the teeth as: odontogenic-radicular periapical cysts. Non dental cysts as; nasopalatine -giant cell reparative granuloma-brown tumor- ameloblastoma-ABC.
An expansile, fairly well defined lytic lesion is seen in relation to the left upper mandibular ridge. It appears unilocular and erodes the inner cortex of the mandible. It displaces the adjacent molar tooth that is seen as if floating within the superior aspect of the lesion & extends to the ipsilateral maxillary antrum.