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Cystic lesions of the maxilla and mandible

“ ask yourself three questions: what is the relation to the tooth? Is it a unilocular or multilocular cyst? How old is the patient? Cyst cha...

ask yourself three questions: what is the relation to the tooth? Is it a unilocular or multilocular cyst? How old is the patient?
Cyst characteristicDifferential
Unilocular, related to the dentitionPeriapical/radicular cyst (painful)
Dentigerous cyst (at the crown of an unerupted tooth)
Unilocular, not related to dentitionless than 30 years of age: odontogenic keratocyst, simple bone cyst
>40 years of age: ameloblastoma, metastases, myeloma
Multilocular cystless than 30 years of age: aneurysmal bone cyst or odontogenic keratocyst

Multiple cysts: odontogenic keratocyst, Gorlin syndrome
>30 years of age: ameloblastoma