Radiography Techniques 1

Question 1

what are periapicals used to diagnose?

Answer 1

aprical inflammation/infection
asses perio problems
traumatic fractures
tooth morphology pre extraction
presence/position of unerupted teeth
endodontics

Question 2

how are periapicals made parallel?

Answer 2

use holders to facilitate positioning
film parallel to tooth
accurate/ reproducible image

Question 3

what is a bisected angle?

Answer 3

x ray taken without holder, operator dependent, not reproducible

Question 4

where should the vertical plane of the film be positioned?

Answer 4

parallel to the long axis of the tooth

Question 5

where should to horizontal plane be?

Answer 5

parallel to horizontal plane of tooth

Question 6

what are barriers to good positioning?

Answer 6

mouth size, gag reflex, film size, digital sensor size and shape

Question 7

what sizes would be used for an adult periapical of the anteriors? posteriors?

Answer 7

• 0,1,2

- 2 only

Question 8

what size of plate should be used for a child

• anterior?
• posterior, deciduous?
• posterior, permanent?

Answer 8

0
0
2

Question 9

bitewing plate size
adult?
child >10?
child >10?

Answer 9

2
2
0/1

Question 10

in a periapical where should the dot be towards?

Answer 10

crowns of the teeth

Question 11

in a bitewing where should the dot be towards?

Answer 11

the palate