Extra-oral views

Question 1

What do they consist of?

Answer 1

cassette case: loaded into the machine
intensifying screen: to reduce dose of radiation exposure
film: type compatible with your intensifying screen

Question 2

DPT/OPG

Answer 2

gives overall view of both jaws in full + surrounding anatomy
used for:
ortho, wisdom tooth, bone loss assessment, diagnosis of jaw fractures

Question 3

Cephlometric/lateral skull

Answer 3

view side of head taken in a cephlostat (can be attachment to OPG/DPT or on its own)
used for:
ortho trt planning, monitor jaw growth, monitor trt progress

Question 4

Lateral oblique

Answer 4

show posterior portion of one side of the mouth - not used now since OPG/DPT have been introduced
used to:
assess position of wisdom tooth, detection of fractures on mandible, alternative to intraoral views

Question 5

Pt accessories that affect dental image:

Answer 5

earrings, tongue studs, ortho appliances, dentures, glasses

These left in may lead to a retake therefore not keeping the dose ALARP