Odontomas are benign tumors composed of ectomesenchyme and odontogenic epithelium with or without dental hard tissue formation. Histologically, they are divided into complex and compound odontomas, the latter being the most common type. In general, they can be found between the roots of erupted teeth or between deciduous and definitive teeth, causing, in many cases, eruptive disorders or alterations in the dental position. Their growth is slow and asymptomatic, and they are usually diagnosed by chance in radiological exams, in which they are observed as a well-defined radiopacity with a radiolucent halo. The treatment of choice is surgical removal to prevent associated complications. We present the case of a 12-year-old male with a lesion in the left upper quadrant that was preventing the eruption of tooth 2.6. The lesion was surgically removed, and its subsequent histopathological analysis revealed a complex odontoma diagnosis. (Rev Port Estomatol Med Dent Cir
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