[Visit at the dentist with consequences].

A 52-year-old patient presented to the emergency department of the polyclinic with a cervicofacial swelling. The indolent swelling appeared after professional tooth cleaning. Computed tomography scanning of the cervical region and thorax revealed entrapped air extending from the frontotemporal to the mediastinal regions. The patient was diagnosed with cervicofacio mediastinal emphysema and subsequently treated with antibiotics. The symptoms subsided and the patient left hospital free of symptoms.