Pneumoparotitis with orthodontic treatment.

Self-induced pneumoparotitis has not been commonly associated with orthodontic treatment nor dental treatment in general. However, the patient described previously and the other reported cases demonstrate the distinct possibility that accommodation to appliance irritation by "puffing out" the cheeks could result in parotid swelling. Pneumoparotitis should definitely be considered in the evaluation of patients with parotid swelling, particularly in cases of unexplained swelling with rapid onset.