Extraoral Radiography in Pediatric Dental Practice
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.
- Graham DT, Cloke P, Vosper M. Principles of radiological physics. 6th ed. Amsterdam: Churchill Livingstone, Elsevier; 2016.Google Scholar
- Iannucci JM, Howerton LJ. Dental radiography. In: Principles and techniques. 4th ed. Amsterdam: Elsevier Saunders; 2012.Google Scholar
- Mettler FA Jr, Upton AC. Medical effects of ionizing radiation. 3rd ed. Amsterdam: Saunders Elsevier; 2008.Google Scholar
- Pauwels R, Seynaeve L, Henriques JCG, de Oliveira-Santos C, Souza PC, Westphalen FH, Rubira-Bullen IRF, Ribeiro-Rotta RF, Rockenbach MIB, Haiter-Neto F, Pittayapat P, Bosmans H, Bogaerts R, Jacobs R. Optimization of dental CBCT exposures through mA reduction. Dentomaxillofacial Radiology. 2015;44:20150108.CrossRefGoogle Scholar
- Whaites E, Drage N. Essentials of dental radiography and radiology. 5th ed. Amsterdam: Churchill Livingstone, Elsevier; 2015.Google Scholar
- White SC, Pharoah MJ. Oral radiology. In: Principles and interpretation. 7th ed. Amsterdam: Elsevier; 2014.Google Scholar