Chapter 7 Panoramic Radiography: Errors Seen in Radiographs
The panoramic errors are viewed by students to be more difficult to learn than the intraoral ones. So we will limit the questions to one type of error at a time. Also to help, a preliminary explanation is provided as background information to help identify the errors. The panoramic technique is much easier to learn than the intraoral technique, and it is much less trouble with regard to clean up and infection control. However, patient positioning must be very exact, because noticeable errors develop with very small mistakes.
Normal Panoramic Image (Diagram 7-2) Notice that structures have been left out. This is to emphasize that not many structures need to be identified to properly troubleshoot the image for technique errors. In this diagram, the nose and sinus as well as the maxilla are left out because nothing goes wrong here in the perfect image. There is no distinct image of the lips, nose, or ears, nor is there any undesirable air. The teeth, mandible body, ramus, TMJs, and spine are nicely imaged as just described.