The Adenomatoid Odontogenic Tumor (AOT) is a rare, slow growing, benign, odontogenic epithelial tumor withcharacteristic clinical and histological features; which usually arise in the second or third decade. It is a tumorcomposed of odontogenic epithelium in a variety of histoarchitectural patterns which are embedded in a matureconnective tissue stroma. It is mostly encountered in young patients with a greater predilection for females. Maxillais the predilection site of occurrence, most commonly associated with an unerupted maxillary canine. It presentsas a symptom-free lesion and is frequently discovered during routine radiographic examination. This case reportdescribes an unusual case of 20 year old male with only a one month history of tumor in the anterior mandible. Thetumor was a well circumscribed intraosseous lesion with an embedded tooth. Histological evidence of calcificationwas present. The present case lends support to the categorization of AOT as a mixed odontogenic tumor
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