Odontomas are odontogenic benign tumours composed of hard dental tissue formed from the epithelial and mesenchymal base. Although odontomas are sometimes suspected in case of delayed eruption of a permanent heir or a persistent deciduous tooth in the dental arch, they are usually asymptomatic and are incidentally found during routine radiographic imaging. Odontomas are histopathologically divided into complex and compound odontomas. We here describe a 9-year-old male patient with compound odontoma, thereby wish to summarize this tumour: its diagnosis and treatment.