Etiology • A hamartomatous or benign mixed odontogenic tumor of the jaw • Composed of enamel, dentin, cementum, and pulp tissue
Clinical Presentation • Two forms, as follows:
• Complex: a randomly arrayed mixture of dental tissues with no gross resemblance to a tooth
• Compound: multiple, tooth-like structures • Mean age of occurrence, 12 to 16 years • Asymptomatic, usually small and discovered incidentally • Jaw expansion may be present with large lesions. • Presence may be heralded by an over-retained primary tooth or
Clinical Presentation • Two forms, as follows:
• Complex: a randomly arrayed mixture of dental tissues with no gross resemblance to a tooth
• Compound: multiple, tooth-like structures • Mean age of occurrence, 12 to 16 years • Asymptomatic, usually small and discovered incidentally • Jaw expansion may be present with large lesions. • Presence may be heralded by an over-retained primary tooth or
by alveolar swelling.
Radiographic Findings • Well-localized, mixed radiolucent and radiopaque lesion • Within alveolar segment of jaws • Complex form most commonly noted in mandibular molar area • Compound form favors anterior jaw region, usually the maxil-
la; may contain a few small teeth or large numbers of tiny tooth-like structures
Diagnosis • Radiographic presentation • Histologic demonstration of dental hard tissues
Differential Diagnosis • Ameloblastic fibro-odontoma • Adenomatoid odontogenic tumor • Calcifying odontogenic cyst • Focal sclerosing osteitis, osteoma
Treatment • Conservative excision/curettage
Prognosis • Excellent