RADIOGRAPHIC LOCALISATION

Question 1

What is the need for radiographic localisation?

Answer 1

to determine location of a structure or pathological lesion in relation to other structures

Question 2

What clinical situations may require radiographic localisation?

Answer 2

• position of unerupted teeth
• location of roots/root canals
• relationship of pathological lesions
• trauma
• soft tissue swellings

Question 3

Radiographs must be used sequentially, what is this sequence?

Answer 3

1. Observation - look and see
2. Interpretation - listen and think
3. Management - patients needs

Question 4

what does parallax mean?

Answer 4

an apparent change in the position of an object, caused by a real change in the position of the observer

Question 5

What parallax mnemonics are there?

Answer 5

SLOB and PAL
- same lingual opposite buccal