Radiology Technique 1

Question 1

What consists of intra-oral radiography?

Answer 1

Peri-apical, Bitewing (H/V) , Occlusal (maxilla, mandible)

Question 2

What consists of extra-oral radiography?

Answer 2

DPT, lateral, Cephalogram, Post.Anterior mandible, Lateral oblique mandible

Question 3

Why peri-apical?

Answer 3

It helps with direct apical, periodontal problems and evaluation of implants

Question 4

Techniques of carrying out peri-apical…

Answer 4

2 types

Parallel and bisected angle technique

Question 5

Difference between parallel and bisected angle?

Answer 5

Parallel uses holders, accurate and reproducible image

Question 6

What are holders made up of?

Answer 6

A bite block (retains receptors), an indicator arm/rod (fits into the block)

Question 7

Types of receptors…

Answer 7

2 types

Film and Digital

Question 8

Things that affect image size?

Answer 8

i) x-ray source to receptor distance

ii) object to receptor distance

Question 9

3 points to think when taking a radiograpgh…

Answer 9

i) Receptor position
ii) Beam alignment
iii) Distance

Question 10

Barriers to good positioning…

Answer 10

Mouth size, gag reflex, film size, digital sensor size & shape

Question 11

Films/PSP receptor sizes

Answer 11

4 sizes. 0,1,2 and 4

Question 12

Which size used for peri-apical anterior for adults?

Answer 12

0,1 and 2

Question 13

Which size used for peri-apical posterior for adult?

Answer 13

Only 2

Question 14

Which size used peri-apical anterior for child?

Answer 14

0 (zero)

Question 15

Which size used for posterior deciduous and permanent for child?

Answer 15

Deciduous - 0

Permanent - 2

Question 16

Which size used for bitewing (V/H) for adult?

Answer 16

2

Question 17

Which size used for child <10 and >10?

Answer 17

>10 = 2
<10 = 0 or 1