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Larson A, Swartz K, Heikinheimo K. A case of multiple AOT-like jawbone lesions in a young patient – a new odontogenic entity?. J Oral Pathol Med. 2012; 32:55-62
Vitrus R, Meltzer JA. Repair of a defect following the removal of a maxillary adenomatoid odontogenic tumor using guided tissue regeneration. A case report. J Periodontol. 2012; 67:46-50
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An adenomatoid odontogenic tumour (AOT) is an uncommon, benign, slow-growing tumour which is usually located in the anterior region of the maxilla without pain and represents 2.2–7.1% of all odontogenic tumours. An AOT often causes expansion of surrounding bone and displacement of adjacent teeth. The tumour is usually associated with an unerupted tooth, frequently canines or lateral incisors. Radiographically, they usually appear unilocular and may contain calcifications, and frequently resemble other odontogenic lesions such as dentigerous cysts or ameloblastoma. Treatment is conservative and the prognosis is excellent. The surgical management and implant-supported prosthodontic rehabilitation of an extrafollicular AOT case that occurred in the left premolar region of the mandible, causing painless swelling in a 25-year-old female patient, is presented. To the best of the authors' knowledge, this is the first extrafollicular type AOT case rehabilitated with dental implants following the total surgical enucleation.
CPD/Clinical Relevance: This article illustrates the healing capacity of jaw bones, which enables subsequent implant placement.
Article
An adenomatoid odontogenic tumour (AOT) is a relatively uncommon distinct odontogenic neoplasm that was first described by Steensland in 1905.1 This tumour is a hamartomatous, non-invasive lesion with a slow but progressive growth, accounting for only 2.2–7.1% of all odontogenic tumours.2 It is most often diagnosed in the second decade of life and about twice as many women are affected as men. The AOT is located in the maxilla twice as often as in the mandible and the anterior jaw is much more affected than the posterior area.3
According to Philipsen and Reichart, the AOT appears in three clinico-topographic variants: follicular (or pericoronal) (73%), extrafollicular (or extracoronal) (24%) and peripheral (3%). Both follicular and extrafollicular are intrabony.4 Clinical features generally focus on complaints regarding a missing tooth. The lesion usually presents as an asymptomatic swelling which is slowly growing and often associated with an unerupted tooth.5 Although larger lesions have been reported in the literature, the tumours are usually in the dimensions of 1.5–3 cm.4
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