Complex Odontoma Hampering the Eruption of a Mandibular Second Molar: A Case Report

Introduction Odontoma is the most prevalent odontogenic tumor and can manifest as compound or complex lesions based on its morphologic features, location, and contents. They are incidentally discovered during routine dental examination and are often associated with an impacted tooth. Case Presentation Herein, we present a case of a 14-year-old female who reported to the clinic for orthodontic treatment. Intraoral examination revealed an unerupted mandibular right second molar associated with a slight bony expansion in the region. Radiographic examination revealed a heterogeneous, densely radiopaque mass surrounded by a radiolucent capsule coronal to the unerupted tooth, suggestive of an odontoma. The mass was surgically removed, and a diagnosis of complex odontoma was reached after the histopathological findings of haphazardly arranged enamel and dentine. The enamel appeared as empty spaces surrounded by dentine, while the pulp tissue was scattered, presenting as loose connective tissue interspersed with fibrous connective tissue and a band of odontoblastic layer. Conclusion Early diagnosis of an odontoma, followed by prompt treatment, will aid in preventing complications in the future.