抄録
Sodium hypochlorite （NaClO） solution is widely used clinically for root canal irrigation in endodontic therapies. We encountered a case where the extrusion of NaClO solution beyond the root canal during root canal treatment caused extensive hematoma in the face.
The patient was a woman in her 70s in whom pain and swelling were confirmed on the right side of her face immediately after root canal irrigation using NaClO solution during root canal treatment on her right maxillary canine. The dentist in charge explained to her that this was a reaction caused by medication extrusion. However, the patient was referred to our department as the facial hematoma and swelling were significant and she was concerned. She was diagnosed with facial hematoma caused by the extrusion of NaClO solution at the right maxillary canine, and anti-inflammatory treatment was performed. On day 20 after the appearance of symptoms, she visited our hospital for the last time as the hematoma and swelling had disappeared.
Root canal irrigation using NaClO solution is biologically hazardous, and severe symptoms may manifest. To prevent complications, it is essential to understand the anatomical position of the tooth to be treated, and use EDTA solution or low-concentration NaClO solution. In addition, when using NaClO solution, it is better to use well-designed irrigation equipment to prevent extrusion.
