<prompt> Panoramic view of the mandible of a patient with history of trauma shows 2 fracture lines at the angle of the mandible. It is most probably due toOblique fractureArtifactDouble fractureNone of the above  <response>: An oblique fracture that involves both cortical plates may cause some diagnostic difficulties if the fracture lines in the buccal and lingual plates are not superimposed. In this case, two lines are seen that converge at the periphery, suggesting two distinct fractures when in reality only one exists. 