抄録
Emphysema is the abnormal introduction of gas in body tissues, and emphysema in the stomatognathic region is caused by various factors such as dental treatment, head and neck surgery, and trauma. In the dental field, instruments such as handpieces and air syringes have been reported as the main causes of emphysema. The characteristic symptoms are marked swelling and crepitus on palpation. A computed tomographic scan demonstrates low-density areas in the subcutaneous tissues. To prevent infection, it is necessary to give antibiotics.
We report four cases of emphysema related to CO2 laser, trauma, sneezing, and straining, presenting in the stomatognathic region. In conclusion, all patients were given antibiotics to prevent infection, which improved the emphysema without any complications. It is important to recognize the various causes of emphysema and to treat it appropriately.
