[Insufficient diagnostics in a patient with a fracture of the mandibular collum]

A 13-year-old boy was presented to oral and maxillofacial surgeon with chin and preauricular pain after afallfrom his skateboard. A panoramic radiograph did not show any indication of a fracture of the mandibular collum. Two weeks later, the boy was referred by his orthodontist to the department of Oral and Maxillofacial Surgery of a medical centre in connection with a relapse ofa class III malocclusion despite a recently completed treatment of that problem. A computertomogram displayed a fracture of the mandibular collum. In case afracture of the mandibular collum is suspected, imaging from 2 directions is always required.