McVaney T P, Kalkwarf K L
Oral Surg Oral Med Oral Pathol. 1976 May;41(5):678-81. doi: 10.1016/0030-4220(76)90324-8.
A panographic radiograph of a 31-year-old man revealed the presence of an impacted supernumerary paramolar. Periapical radiographs of the same area failed to confirm the existence of this supernumerary tooth. A review of the inherent distortion factors present in panographic radiography leading to the misdiagnosis is discussed.
