The 3-dimensional(3-D) nature of facial fractures must still be inferred by the spatial imagination of the physician. Recent technological advances in clinical application of computed tomography have made 3-dimensional reconstruction from consecutive axial tomography possible. This new method improves the assessment and therapy of patients undergoing surgical procedures for the fractures of the head and neck. Three dimensional computed tomography(3-D CT) was performed on 7 patients of complex maxillofacial trauma at Seoul National University from May 1989 to Oct. 1989. Three examples are demonstrated here and we conclude that this method improves the display of the location and volume of pathology and affords accurate therapeutic and surgical planning.