Radiology M3 - R5 : Radiography techniques

Question 1

what are the three types of intra-oral X rays

Answer 1

periapical

bitewing - horizontal + vertical

Occlusal - maxilla and mandible

Question 2

what are the three types of Extra oral radiograpgh

Answer 2

Dental panoramic tomogram - DPT

lateral Cephalgram

Posterior - Anterior mandibe

Question 3

which radiograpghy technique would you use to detect - apical inflammation/infection

Answer 3

periapical

Question 4

which radiograpghy technique would you use to detect - periodontal problems

Answer 4

periapical

Question 5

which radiograpghy technique would you use to detect - trauma fractures to tooth/surrounding bone

Answer 5

periapical

Question 6

which radiograpghy technique would you use to detect - presence/position of unerupted teeth

Answer 6

periapical

Question 7

which radiograpghy technique would you use to detect - tooth morphology pre extraction

Answer 7

periapical

Question 8

which radiograpghy technique would you use to detect - endodontics

Answer 8

periapical

Question 9

which radiograpghy technique would you use to detect - pre/post apical surgery

Answer 9

periapical

Question 10

which radiograpghy technique would you use to detect - evaluation of implants

Answer 10

periapical

Question 11

name this technique being used

Answer 11

parralleling technique

Question 12

in the parlleling technique what is used to facilitate positioning

Answer 12

uses holders to facilitate positioning

Question 13

in the paralleling technique where would the receptor be located

Answer 13

parallel to the tooth

Question 14

name this technique

Answer 14

bisected angle

• operator dependant
• not reproducable
• can be done without a holder

Question 15

holders consist of three parts what are they

Answer 15

1. bite block - retain the receptor
2. an indicator arm/rod - fits in to the bite block
3. an aiming ring - slides on the arm to establish alignment of collimator with receptor

Question 16

there are two types of holders what are they

Answer 16

anterior and posterior

blue = anterior

yellow = posterior

Question 17

receptor tooth relationship - the long axis of the film should be parallel to what

Answer 17

the tooth

Question 18

what will occur if a radiograpgh is taken when the tooth and receptor are not parallel vertically

Answer 18

distortion of image occurs

Question 19

what does the image indicate

Answer 19

image shows elongation has occured. this is due to the vertical axis of the tooth and the receptor not being parallel.

Question 20

what does this image show

Answer 20

poor angulation has resulted in elongation

Question 21

what does this image show

Answer 21

poor angulation resulting in fore-shortening

Question 22

what would you look for to determine left and right on a radiograph

Answer 22

orientation dot