[The long face syndrome].

INTRODUCTION: Since the beginning of cephalometric analysis, a significant number of approaches to vertical facial proportions have been proposed. In our view, diagnosing a vertical problem has nothing to do with numbers or measurements. It's all about perceptions and - rather subjective - impressions. An "impression" of long face may be provoked by the following causes isolated or combined: vertical maxillary hyperplasia, open bite, anterior vertical mandibular hyperplasia, narrow face, lack of chin-neck definition.

METHOD: Clinical planning in these cases is followed by 3D simulation and CAD/CAM generation of surgical splints.

CONCLUSION: Surgical management of the Long Face Syndrome may include the following strategies isolated or combined : maxillary impaction, vertical chin reduction, counterclockwise rotation of the occlusal plane.