Fact-sheet: Sub cutaneous emphysema
Updated on 09/17/2021 at 12:16 PM
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Definition
Sub cutaneous emphysema with mediastinal extension: a known but rare complication of dental treatment.
Mainly described in the literature as a sequela following tooth extraction, apicoectomy, crown preparation, or root canal treatment.
During the procedure, the dentist's use of an air spray to dry the tooth (pressure of approximately 2.5 to 3 bar) may cause gingival detachment, air spread along the fascial spaces, or periosteal detachment.
Clinical features
Snow-like crepitus on palpation
Pain, cervical swelling
Risks:
Occurrence of pneumopericardium or pneumothorax leading to hemodynamic failure
Respiratory distress due to airway obstruction
Mediastinitis
CT
Cervical emphysema, possibly extensive
Possible pneumomediastinum