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Odontomas have been classified as odontogenic benign tumors composed of dental tissue. These tumors are generally asymptomatic and seen most commonly in association with unerupted teeth. In general, odontomas occur more often in the permanent dentition, and they are rarely associated with the primary dentition. The present report describes the unusual occurrence of a compound odontoma in a 4-year-old female who had an unerupted mandibular left primary canine and painless swelling in that region noticed by parents. Her clinical examination demonstrated a well-defined painless swelling with normal overlying mucosa, firm in consistency, extending from the primary lateral incisor to the primary first molar at the same site with buccal expansion, normal temperature, and non-pulsatile. Radiographic examination revealed the presence of multiple radiopaque tooth-like structures near the crown of the primary unerupted canine. Surgical removal of the tumor was performed under general anesthesia and the histological examination confirmed the diagnosis of a compound odontoma.
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