抄録
A case of hematoma of the palate associated with extirpation of impacted supernumerary teeth in the maxilla one week after is reported. The patient was a 6-year-old boy. Two impacted supernumerary teeth were removed under local anesthesia without any complication. Nasopalatine artery was not ligated. The wound healing course was favorable; however, a hemorrhage and hematoma on the palatal gingiva were found one week after surgery. No bleeding tendency or coagulation profile was shown at the blood examination; these were completely within normal limits. Although the hemostatica and antibiotics were administered and a wound was pressured by the tourniquet, the hematoma was gradually increased. In order to arrest the bleeding, the patient underwent elimination of hematoma and hemostasis under general anesthesia. A blood clot was found around the incisive foramen and the right palate, and a nasopalatine artery appeared to be damaged on the incisive foramen. Hematoma of the palate occurring later than one week after extraction seems to be not common. It was suggested that in our case the hematoma was caused by the damage of the nasopalatine artery associated with the extraction of the supernumerary teeth.
