Adenomatoid odontogenic tumor associated with an unerupted mandibular lateral incisor: a case report

AOT is a rare, non-invasive, benign (hamartomatous) epithelial lesion of odontogenic origin and accounts for 2% to 7% of all odontogenic tumors.AOT usually affects young patients, mostly during their second to third decades of life.Women are affected more frequently than men (male:female ratio=1:1.9),and the lesions tend to occur in the anterior maxillary region 5 .There are three types of AOT: a follicular type (73% of all cases), which has a central lesion associated with an impacted tooth; an extrafollicular type (24% of all cases), which has no relation with an impacted tooth; and a peripheral type (3% of all cases) 6 .Of the follicular types of AOT, 36% occur in the mandible.In one study of AOT affecting the mandible, only 28% of cases involved the mandibular incisor area 7 .Here, we present a case of AOT involving the mandible with an unerupted lateral incisor. II. Case ReportAn 11-year-old female patient visited the Department of Oral and Maxillofacial Surgery of Dankook University Dental Hospital (Cheonan, Korea) with the chief complaint of a two-year history of swelling in the mandibular anterior region.There was mild swelling in the chin area, which was non-tender and had a firm consistency with ambiguous margins.Intraorally, the patient had distinct swelling in the anterior