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Radiology & Radiography > Selection Criteria > Flashcards

Selection Criteria Flashcards

0
Q

Which extra oral views may we take?

A

Oblique laterals
DPT
Lateral ceph

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1
Q

Which intra oral views can we take?

A

Periapical
Bitewing
Occlusal

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2
Q

What are the main indications for bite wings?

A

Detection of interproximal caries
Monitoring profession of caries
Assess existing restorations
Assessment of periodontal pocket depths up to 6mm using vertical bite wings

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3
Q

By how much does the diagnostic threshold for caries detection increase by when using bite wings?

A

4 fold

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4
Q

How much demineralisation is needed before You can see caries radiologically?

A

50% demineralisation is needed

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5
Q

T/F caries needs a low Kv to detect contrast?

A

T

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6
Q

T/F for assessment of periodontal needs, you need higher Kv?

A

T since need less contrast

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7
Q

What are the two methods of taking Periapical radiographs?

A

Long cone paralleling and bisecting angle

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8
Q

Which method of Periapical technique should be used?

A

LONG CONE PARALELLING

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9
Q

Name the occlusal radiographs available

A 
Upper standard 
Upper oblique occlusal 
Lower 90 occlusal
Lower 45 occlusal 
Lower oblique occlusal
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10
Q

Which two occlusals are forms of large bisected angle Periapical?

A

Upper standard and lower 45

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11
Q

When would you take an upper standard occlusal?

A

Unable to take a Periapical
Trauma
Palatal pathology
2nd view to aid localisation

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12
Q

When would you take an upper oblique occlusal?

A

Unable to take a bite wing or pa

Provide view from diff angle

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13
Q

When would you take a lower 90 degree occlusal?

A

Detect for salivary calculus
Fracture of ant mandible
Gucci lingual expansion or cortical bone

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14
Q

When would you take a lower 45?

A

Unable to tolerate Periapical
Lesion too large to visualise on intra oral film
Anterior fracture of mandible

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15
Q

When would you take a lower oblique occlusal?

A

Cannot tolerate PAGE

Imaging SM gland

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16
Q

When do you radiograph in endo?

A

Pre op
Prior to obturation
Post obturation

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17
Q

When should you follow up X-rays in Endodontically treated teeth?

A

1 year on

4 years on

18
Q

When should you take a PA in advanced restorative dentistry?

A

Prior to placing a crown or using the tooth as an abutment

19
Q

What shout all X-ray’s be taken with the aid of?

A

Beam aiming devices and X-ray holders

20
Q

When would we take a DPT?

A 
Prior to GA
Unerupted tooth in place or size too large that IO film could not be used
Prior to dental clearance
Ortho assessment 
Trauma 
Implant
Perio
21
Q

T/F DPT films should be re taken at timely intervals?

A

F

Only taken in the presence of specific clinical signs and symptoms

22
Q

What are the purposes of lateral Cephs?

A

Assess skeletal pattern
Angularity of incisors
Orthognathic planning

23
Q

When are CBCT’s indicated?

A

Implants

Fracture assessments

24
Q

when would US be used?

A

Neck lump

Salivary stone

25
Q

When would MRI be used?

A

Soft tissue lesions

TMJ

26
Q

When is nuclear medicine used?

A

Rarely

TMJ hyperplasia

27
Q

What angle is the upper oblique taken at?

A

65 degrees to the horizontal plane

28
Q

What should you use with an upper oblique?

A

Thyroid collar

29
Q

Which lower occlusal is the head tilted back?

A

Lower 90

30
Q

Which would you use for salivary caliculi?

A

Lower 90

31
Q

When would you use a lower oblique occlusal?

A

SM gland

32
Q

How do you position the head in the oblique lateral?

A

Rotate head towards side of interest this is so that the Contralateral ramus is out of the way
Need to raise the chin

33
Q

What is the name for the space between the back of the ramus and the cervical spine?

A

The radiographic keyhole

34
Q

When is the radiographic key hole of biggest interest?

A

When taking lateral obliques

35
Q

What do you need for an oblique lateral?

A

Cassettes

36
Q

When would we take a peri apical?

A

Root or pulpal path
Extent of coronal pathology in anterior teeth
Assessment of apical pathology
Assessment of local anatomy

37
Q

When would you take radiographs in perio?

A

To assess bone loss and furcation involvement
Determine the presence of any causative factors
Assist in treatment planning
Evaluation of treatment

38
Q

What are the guidelines for radiography in perio?

A

Uniform pocketing of less than 6mm or no recession: horizontal
Pocketing of more than 6mm: vertical bitewing polls or minus periaplcals
Irregular pocketing: periaplcals
Periapical for perio endo

Can consider DPT

39
Q

What percentage of adults have at least one crown?

A

36%

40
Q

What percentage of adults have more than 6 crowns?

A

5%

41
Q

What is the average number of fillings ?

A

7

42
Q

T/F bite wings are not recommended in the heavily restored dentition?

A

F

For caries assessment

Radiology & Radiography (11 decks)

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