Subcutaneous, obital, and mediastinal emphysema secondary to the use of an air-abrasive device

Subcutaneous emphysema can occur whenever compressed air is employed intraorally. A case is presented of subcutaneous, orbital, and mediastinal emphysema subsequent to the use of an air-abrasive device. The case is believed to be the first reported case of an air-abrasive-r elated emphysema and is presented as a cautionary report.