Midterm

Question 1

What is one major concern when positioning for a dental radiograph image?

Answer 1

Superimposition

Question 2

What is the most common clinical sign that ends up leading to dental radiographs?

Answer 2

Decreased appetite

Question 3

Identify the dental formulae:

Canine, deciduous, maxillary/mandibular

Answer 3

i3 c1 p3 (3 incisors, 1 canine, 3 pre-molars - per quadrant)

Question 4

Identify the dental formulae:

Canine, permanent, maxillary

Answer 4

i3, c1, p4, m2

3 incisors, 1 canine, 4 pre-molars, 2 molars - per quadrant

Question 5

Identify the dental formulae:

Canine, permanent, mandibular

Answer 5

i3, c1, p4, m3

3 incisors, 1 canine, 4 pre-molars, 3 molars - per quadrant

Question 6

How many permanent teeth in total are within a dogs mouth?

Answer 6

42

Question 7

How many deciduous teeth in total are within a dogs mouth?

Answer 7

28

Question 8

Which maxillary teeth are single rooted? (Canine)

Answer 8

Incisors, canines, 1st pre-molar

Question 9

Which maxillary teeth are double rooted? (Canine)

Answer 9

2nd and 3rd pre-molars

Question 10

Which maxillary teeth are triple rooted? (Canine)

Answer 10

4th pre-molar, molars

Question 11

Which mandibular teeth are single rooted? (Canine)

Answer 11

incisors, canines, 1st pre-molar, 3rd molar

Question 12

Which mandiblar teeth are double rooted? (Canine)

Answer 12

2nd and 3rd pre-molar, 4th pre-molar, 1st and 2nd molar

Question 13

Which mandibular teeth are triple rooted? (Canine)

Answer 13

None

Question 14

Identify the dental formulae:

Feline, deciduous, maxillary

Answer 14

i3, c1, p3 (3 incisor, 1 canine, 3 pre-molars - per quadrant)

Question 15

Identify the dental formulae:

Feline, deciduous, mandibular

Answer 15

i3, c1, p2 (3 incisor, 1 canine, 2 pre-molars - per quadrant)

Question 16

Identify the dental formulae:

Feline, permanent, maxillary

Answer 16

i3, c1, p3, m1 (3 incisor, 3 pre-molars, 1 molar - per quadrant)

Question 17

Identify the dental formulae:

Feline, permanent, mandibular

Answer 17

i3, c1, p2, m1 (3 incisors, 1 canine, 2 pre-molar, 1 molar - per quadrant)

Question 18

How many total deciduous teeth are in the mouth of a feline?

Answer 18

26

Question 19

How many total permanent teeth are in the mouth of a feline?

Answer 19

30

Question 20

Which maxillary teeth are single rooted? (Feline)

Answer 20

incisors, canines, 2nd premolar

Question 21

Which maxillary teeth are double rooted? (Feline)

Answer 21

3rd pre-molar

Question 22

Which maxillary teeth are triple rooted? (Feline)

Answer 22

4th premolar, 1st molar has 1-3 roots

Question 23

Name 3 reasons when a radiograph should be taken (There is 7)

Answer 23

• mobile tooth
• gingiva bleeds without probing
• fracture/discolouration
• periodontal disease
• missing teeth without explanation
• resorptive lesions
• before an extraction

Question 24

What is the technique we use in order to avoid elongation/foreshortening of teeth?

Answer 24

Bisecting Angle

Question 25

How do we find the Bisecting angle?

Answer 25

Find the slope of the tooth: from crown to root. This creates an angle between this line and the line of the film. The bisecting angle is the midline between these two lines (cutting the angle in half). The beam is placed perpendicular to this angle

Question 26

Foreshortening of a tooth means the beam is placed too ______ (high or low)

Answer 26

high

Question 27

Elongation of a tooth means the beam is placed too _____ (high or low)

Answer 27

low

Question 28

For which teeth do we use the bisecting angle?

Answer 28

Canine, incisors, all maxillary teeth

Question 29

The bump on the film should always be positioned how?

Answer 29

Facing the tube head and facing up

Question 30

What are the 5 densities of a radiograph?

Answer 30

gas, fluid, soft tissue, bone, stones/metal

Question 31

When performing a full mouth jaw view, what views are used for the maxilla?

Answer 31

1. DV Intraoral view (occlusal, pet biting down) 2. Open Mouth Left VD Oblique (Extra Oral 3. Open Mouth Right VD Oblique (Extra Oral)

Question 32

When performing a full mouth jaw view, what views are used for the mandible?

Answer 32

1. VD Intraoral occlusal 2. Open mouth Left DV Oblique (Extra Oral) 3. Open mouth Right DV Oblique (Extra Oral)

Question 33

How is the patient positioned for the following teeth: | Mandibular pre-molar and molars

Answer 33

Lateral recumbency with the side to be imaged up

Question 34

How is the patient positioned for the following teeth: | Maxillary teeth

Answer 34

Sternal recumbency

Question 35

How is the patient positioned for the following teeth: | Mandibular canine and incisor

Answer 35

Dorsal recumbency

Question 36

How is the patient positioned for the following teeth: | Maxillary 4th pre-molars (Cats)

Answer 36

Lateral, affected side down, place film under cat (not in mouth), planes of mouth should be parallel to film

Question 37

What does the SLOB rule stand for? How do you use it?

Answer 37

Same Lingual, Opposite Buccal. The technique is used so that 3-rooted teeth do not have super-imposition of the roots. If you angle the tubehead slightly rostrally or caudally, you can see all 3. If you move rostrally, the same side you moved to, that root is the Lingual root. The opposite side to which you moved is the Buccal root.