J Korean Assoc Oral Maxillofac Surg 2017; 43(1): 49~52
Iatrogenic subcutaneous cervicofacial emphysema with pneumomediastinum after class V restoration
Sang-Woon Lee1, Yoon-Hyuk Huh2, Min-Sang Cha1
1Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine, 2Department of Prosthodontics and Research Institute of Oral Science, Gangneung-Wonju National University, Gangneung, Korea
Sang-Woon Lee
Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine, 38 Bangdong-gil, Sacheon-myeon, Gangneung 25440, Korea
TEL: +82-33-610-3391   FAX: +82-33-610-4960
E-mail: sangwoone@hanmail.net
ORCID: http://orcid.org/0000-0002-0904-9391
Received September 13, 2016; Revised November 18, 2016; Accepted November 30, 2016.; Published online February 28, 2017.
© Korean Association of Oral and Maxillofacial Surgeons. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 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.
Keywords: Subcutaneous emphysema, Mediastinal emphysema


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28 February 2017
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