抄録
This article reports on subcutaneous emphysema with extensive bleeding caused by root canal therapy of a left maxillary first molar. A woman in her 60s visited the otolaryngology department of our hospital for treatment of maxillary sinusitis but was transferred to our department and underwent root canal treatment of the left maxillary first molar because of dental focal infection.
After washing by H2O2 and NaClO, she claimed a sense of incongruity of the left gena. She suffered sudden swelling of the left buccal region afterwards. Left gena subcutaneous emphysema and extensive bleeding were found by CT. She was hospitalized for follow-up because of intense pain and trismus. She suffered dyspnea after hospitalization and was given a steroid dosage, which immediately improved the dyspnea.
It is important to recognize that serious symptoms can be accidentally caused by root canal treatment, to consider ways to prevent occurrence, and to devise a counterplan in case of occurrence.
