Use of 3D printed models in student education of craniofacial traumas.

A low-cost 3D printed model has been introduced into the oral and maxillofacial surgery teaching program of undergraduate students to improve education and mechanical comprehension of craniofacial trauma. Steps of the 3D printed haptic model building process are listed. 3D printed models of facial fractures were obtained from Data Imaging and Communications in Medicine (DICOM) data. Computed Aided Design and Manufacturing (CAD-CAM) freeware was used to create new fractures on the standard tessellation language (STL) file. 3D printed haptic model appears to be an efficient low-cost support for craniofacial trauma education of undergraduate students.

Massive pneumomediastinum and subcutaneous emphysema secondary to isolated zygomaticomaxillary complex fracture.

Posttraumatic subcutaneous emphysema is a well-known complication after facial injury, but diffusion of gas into the mediastinum is uncommon. There are only a few cases described in the literature of a pneumomediastinum (PM) after an isolated facial trauma. We report a case of posttraumatic facial emphysema and PM after an isolated zygomaticomaxillary complex fracture due to assault.The diagnosis of PM and its extension until the diaphragm were confirmed by computed tomogram. The patient recovered after treatment with antibiotics and analgesia. The zygomaticomaxillary complex fracture was treated 10 days later.