抄録
We report a case of phlegmon of the cheek due to pericoronitis of partially impacted fused teeth. The patient was a 57-year-old woman who was referred to our institution with complaints of a right cheek swelling. Panoramic radiographs revealed a tooth-like opacity in the lower right molar region. The patient was diagnosed with phlegmon of the cheek due to pericoronitis of tooth-like hard tissue in the molar region.After anti-inflammatory drug treatment, she underwent excision of the tooth-like hard tissue under general anesthesia. The excised mass was a fusion of a supernumerary tooth and the lower third molar. At the last follow-up, the patient was healthy with an uneventful postoperative course.