Muhad Noorman P- Dentowesome 2020

During impacted teeth extraction process,Surgical managment of facial fractures with high speed rotary instruments like airotor, blowing of compressed air into root canal , airotor in middle face fractures with use of air-pushing machine such as airotor or even an air syringe, Due to air leakage inside the tissues can cause the phenomenon of confined air within tissues called Cervicofacial Emphysema and is the result of air trapping, so use the micromotor handpiece instead of the airotor, because it is a dangerous condition._The treatment is only to reassure the patient that it will go away after 3-4 days. However rarely can cause Venous Air Embolism, mediastenal emphysema and rarely pneumothorax.

Clinically presented as unilateral swelling of face/neck with or without dysphagia resembling Angioedoema,however crepitus on palpation is a positive diagnostic feautre.

Another type is PNEUMOPAROTID,entrapment of air in parotid duct either accidental or by profession in trumphet blowing artist etc.. presenting with painful swelling in face over parotid region with froathy saliva.and ctepitus on palpation.

References: Shafer’s Textbook of Oral Pathology