Matzen LH, Christensen J, Hintze H, Schou S, Wenzel A. Diagnostic accuracy of panoramic radiography, stereo-scanography and cone beam CT for assessment of mandibular third molars before surgery. Acta Odontologica Scandinavica. 2013;71(6):1391-1398. doi: 10.3109/00016357.2013.764574