Extraoral Radiography in Pediatric Dental Practice

  • Johan Aps


Extraoral radiography means that both the image detector and the X-ray machine are placed outside the patient’s mouth. The X-ray source and the image detector have to be aligned in order to generate the desired image quality. There are two ways of obtaining extraoral radiographs: the first way is to work with a stationary X-ray source and image detector and the second is to have the X-ray source and image detector move in synchronicity in opposite directions. The first technique results in a plain radiographic image, while the other technique results in a tomographic image. The latter implies a focal trough, which ideally contains all the tissues one is interested in. More explanation is offered below.

Further Reading

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Johan Aps
    • 1
  1. 1.Dental SchoolUniversity of Western AustraliaWestern AustraliaAustralia

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