Radiography

Question 1

At what intervals should bitewings be taken for high risk patients?

Answer 1

6 months

Question 2

At what interval should bitewings be taken for medium risk patients?

Answer 2

12 months

Question 3

At what intervals should bitewings be taken for low risk patients?

Answer 3

2 years

Question 4

At what intervals should bitewings be taken for low risk patients with primary dentition?

Answer 4

12 months

Question 5

What is the recommended radiographs for heavily restored dentition/history of multi quadrant endodontic treatment?

Answer 5

consider OPG/selected PAs

Question 6

What is the recommended radiographs for grossly neglected dentition with multiple grossly carious teeth and/or roots in many quadrants?

Answer 6

OPG

Question 7

Which radiographic view is indicated for gingivitis?

Answer 7

no radiographs indicated

Question 8

Which radiographic view is indicated for < 5mm pocketing?

Answer 8

horizontal bitewings

Question 9

Which radiographic view is indicated for > 5mm and < 8mm pocketing?

Answer 9

vertical bitewings

Question 10

Which radiographic view is indicated for > 8mm localised pocketing?

Answer 10

selected PAs

Question 11

Which radiographic view is indicated for > 8mm generalised pocketing?

Answer 11

full mouth PAs, could consider OPG

Question 12

What is the intraoral dose per exposure for PAs?

Answer 12

1-8 uSv

Question 13

What is the dose of a OPG?

Answer 13

5-30 uSv

Question 14

What are 5 indications for bitewings?

Answer 14

• if reversible pulpitis is suspected
• caries
• poor restorations
• bone levels (<5mm loss)
• calculus

Question 15

What are 5 indications for PAs?

Answer 15

• if irreversible pulpitis is suspected
• bone loss >5mm
• fractures/perforations
• pathology at apex
• caries - crown/root

Question 16

Which periapical technique is the following?
- distortion minimised
- reproducible
- little (predictable) magnification
- sometimes harder to tolerate
- less technique sensitive

Answer 16

paralleling

Question 17

Which periapical technique is the following?
- more distortion
- not reproducible
- uneven magnification
- no extra equipment required
- easier to tolerate
- technique more prone to errors

Answer 17

bisecting angle

Question 18

Vertical bitewings can be useful for which type of dentition?

Answer 18

• mixed dentition
• root caries

Question 19

Which radiographic view is useful for special care/children?

Answer 19

lateral oblique

Question 20

What is the description for an acceptable radiographic, diagnostically acceptable?

Answer 20

no or minimal errors of sufficient image quality to answer the clinical question

Question 21

What is the description for a diagnostically not acceptable radiograph?

Answer 21

errors which render the image diagnostically unacceptable

Question 22

What is the aim of acceptable radiographs using digital imaging?

Answer 22

not less than 95%

Question 23

What is the aim of not acceptable radiographs using digital imaging?

Answer 23

not greater than 5%

Question 24

What is the aim of acceptable radiographs using film-based systems?

Answer 24

not less than 90%

Question 25

What is the aim of not acceptable radiographs using film-based systems?

Answer 25

not greater than 10%