Radiography

Question 1

What year is the IRMER?

Answer 1

2000

Question 2

What is a RPA

Answer 2

Radiation protection adviser

Question 3

What is a developer?

Answer 3

Alkaline

Question 4

What is a PA?

Answer 4

Periapical X-ray

Question 5

What’s the risk of a X-ray?

Answer 5

Dermatitis, infertility, cancer, leukaemia, cell mutation

Question 6

What does ALARP stand for?

Answer 6

As low as reasonably practicable

Question 7

Why may you use a radiography?

Answer 7

Dental caries, periodontal disease, abscess/cysts, bone loss, nerves, overhangs, supernumeraries, endodotic treatment

Question 8

The medical physicist who is appointed in writing and gives advice on staff and public is known as the:

A. RPA
B. RPB
C. Legal person
D. RPS

Answer 8

RPA - Radiation protection adviser

Question 9

All of the following are faults which can occur to dental radiographs during processing expect:

A. Image is herringbone
B. Film has splash marks
C. Film is black
D. Film is blank

Answer 9

Image is herringbone - when film is placed wrong around.

Question 10

A radiograph has been taken and the dentist states they think it may have been over exposed. How will the image appear?

A. Herringbone effect
B. Too light
C. Fogged
D. Too dark

Answer 10

Too dark

Question 11

The stages of automatic processing of radiographic film are:

A. Washing, fixation, washing, development, drying
B. Washing, development, washing, fixation, drying
C. Development, fixation, washing, drying
C. Development, wash, fixing, washing, drying

Answer 11

Development, fixation, washing, drying - film always get washed once as alkaline and acid never meet. Developer is alkaline and fixer is acid.

Question 12

The exposure time of extra oral radiographs is kept to minimum by the use of:

A. Larger film
B. Fast films (f speed)
C. Light tight cassettes
D. Intensifying screens

Answer 12

Intensifying screens

Question 13

A 20 years old man comes to your practice as a new patient requiring an endodontic assessment. Which type of radiograph would be appropriate at this stage?

A. Dental panoramic tomography (DPT)
B. Occlusal
C. Bitewings
D. Periapical

Answer 13

Periapical - before doing any endodontic treatments a periapical radiograph must be done to see the the apex of the roots and surrounding bone.

Question 14

Which of the following options is true with regard to correct storage of films?

A. Old and new stock must not be stored together
B. Old stock must be used first
C. Fast films must be kept in their original package
D. Films do not have ‘use by’ dates, as so chemicals

Answer 14

Old stock must be used first

Question 15

Which one of the following options correctly states the order of contents of an intra-oral film packet, from the x-ray machine?

A. Paper, film, foil, paper
B. Paper, film, paper, foil
C. Paper, foil, paper, film
D. Paper, foil, film, paper

Answer 15

Paper, film, paper, foil - foil always stays at the back

Question 16

What is the title of the designated person appointed in each dental workplace to assess the risk of using ionising radiation, and to oversee the precautions taken to minimise the risks identified?

A. Medical physicist
B. Legal person 
C. Radiation protection supervisor 
C. Legal person 
D. Radiation protection adviser

Answer 16

Radiation protection supervisor

Question 17

When run correctly, a quality assurance of radiographs MUST achieve which one of the following aims?

A. Be cost effective
B. Minimise patient exposure to an acceptable level
C. Reduce patient waiting times
D. Save clinical time

Answer 17

B. Minimise patient exposure to an acceptable level

Question 18

The safe use of ionoising radiation involves following the principle of ALARP (ALARA) to reduce the exposure of patients and staff to x-rays. Which one of the following will NOT help to achieve ALARP (ALARA)?

A. Use of d speed films
B. Expose the patients only
C. Fresh processing solutions
D. Equipment maintenance

Answer 18

Use of d speed films

Question 19

Where on the body should a radiation monitoring badge be worn?

A. Waist area
B. Chest area
C. Shoulder nearest the x-ray tube head
D. Thyroid area

Answer 19

Waist area

Question 20

What are the hazards associated with dental radiography?

Answer 20

Cell mutation, dermatitis, burns, cancer/leukemia, abnormalities to unborn foetus, infertility

Question 21

Why are bitewing x rays taken?

Answer 21

Periodontal bone levels, presence of calculus, overhanging caries and interproximal

Question 22

Why are Periapical (PA) x rays taken?

Answer 22

Bone levels, presence of unerupted teeth, root fracture/morphology, apical pathology

Question 23

Description of a periapical (PA) x ray

Answer 23

Shows the whole form of the tooth from the crown to the apex of the root and some surrounding bone.

Question 24

Description of a bitewing x ray

Answer 24

Shows 2nd and 3rd premolars and molar of upper and lower in occlusion

Question 25

Description of a occlusal x ray

Answer 25

Shows occlusal plate of either the maxilla or mandible and bone structure.

Question 26

Why are occlusal x rays taken?

Answer 26

Impacted teeth, supernumeraries (extra tooth)

Question 27

Description of dental panoramic pantomography x ray

Answer 27

A general scan of the maxillary and mandibular, teeth and supporting structure.

Question 28

Why are dental panoramic pantomography (DPT) x rays taken?

Answer 28

Mandibular fracture, joint space on TMJ, teeth presence

Question 29

When is lateral skull taken?

Answer 29

Lateral skull x rays are mainly used in orthodontic

Question 30

When is Oblique lateral x rays taken?

Answer 30

This is mainly taken with patients who have special needs, children who move a lot and individuals who find it difficult to do normal x rays.

Question 31

Developer is..

Answer 31

Alkaline

Question 32

Fixer is..

Answer 32

Acid

Question 33

What kind of plate is direct on digital processing?

Answer 33

Sensor plate

Question 34

What kind of plate is indirect on digital processing?

Answer 34

Phosphor plate