title: Iatrogenic subcutaneous cervicofacial emphysema with pneumomediastinum after class V restoration.
abstract: Subcutaneous facial emphysema after dental treatment is an uncommon complication caused by the invasion of high-pressure air; in severe cases, it can spread to the neck, mediastinum, and thorax, resulting in cervical emphysema, pneumomediastinum, and pneumothorax. The present case showed subcutaneous cervicofacial emphysema with pneumomediastinum after class V restoration. The patient was fully recovered after eight days of conservative treatment. The cause of this case was the penetration of high-pressure air through the gingival sulcus, which had a weakened gingival attachment. This case indicated that dentists should be careful to prevent subcutaneous emphysema during common dental treatments using a high-speed hand piece and gingival retraction cord.
authors.affiliation: Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Sang-Woon
authors.identifier: 0000-0002-0904-9391
authors.initials: SW
authors.lastname: Lee
authors.affiliation: Department of Prosthodontics and Research Institute of Oral Science, Gangneung-Wonju National University, Gangneung, Korea.
authors.forename: Yoon-Hyuk
authors.identifier: 0000-0003-4072-5199
authors.initials: YH
authors.lastname: Huh
authors.affiliation: Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea.
authors.forename: Min-Sang
authors.identifier: 0000-0003-1695-0142
authors.initials: MS
authors.lastname: Cha
keywords: Mediastinal emphysema; Subcutaneous emphysema