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Subcutaneous emphysema can occur whenever compressed air is employed intraorally.
Compressed air will dissect along tissue planes causing tissue damage and pain. Air abrasive technology with its associated high-pressurized abrasive powder has the potential to increase both the incidence and morbidity of subcutaneous emphysema. This article highlights the potential for iatrogenic damage and the need for vigilance during air-abrasive devices use. Rubber dam isolation was initially applied with the first molar as the retainer. An air-abrasive device was utilized for preparations, with 120 psi and a high powder flow rate.