Small Animal Dentistry, Oral Exam, and Dental Radiography

Question 1

What dog breed is predisposed to early periodontitis by 37 weeks old?

Answer 1

Yorkies

Question 2

When does the apex close in cats and dogs?

Answer 2

Cats: ~ 8 months
Dogs: 12 months max

Question 3

What 4 structures make up the periodontium?

Answer 3

1. Gingiva
2. Cementum
3. Alveolar bone
4. Periodontal ligament

Question 4

What is the mucogingival junction?

Answer 4

point separating gingiva and alveolar mucosa

Question 5

Which of the following structures are not visible on dental radiographs?

A. Pulp
B. Dentin
C. Cementum
D. Periodontal ligament
E. Enamel

Answer 5

C. Cementum

Question 6

________ is the surface facing the lips

Answer 6

Labial (incisors, canines)

Question 7

Which of the following terms is only used to describe maxillary teeth?

A. Labial
B. Mesial
C. Palatal
D. Buccal

Answer 7

C. Palatal

(teeth surface facing soft palate only describes maxillary teeth)

Question 8

When do deciduous teeth fully erupt in dogs and cats?

Answer 8

2-3 months after birth

Question 9

Which adult teeth in dogs and cats have no deciduous predecessor?

Answer 9

• All molars in dogs and cats
• Upper and Lower PM1 in dogs have no deciduous teeth

Question 10

All permanent teeth erupt ___________ or _________ to deciduous teeth. What is the one exception?

Answer 10

Lingually or palatally

Exception: Maxillary canine teeth in dogs erupt mesially

Question 11

What factors can affect tooth eruption time in dogs and cats?

Answer 11

• Females erupt earlier
• Large breeds erupt earlier
• Poor nutrition delays eruption

Question 12

What is the deciduous dental formula in dogs vs permanent dental formula?

Answer 12

D: 2 (I 3/3, C 1/1, PM 3/3) = 28

Permanent: 2 ( I 3/3, C 1/1, PM 4/4 M 2/3) = 42

Question 13

What is the deciduous dental formula in cats vs permanent dental formula?

Answer 13

D: 2 (I 3/3, C 1/1, PM 3/2) = 26

Permanent: 2 ( I 3/3, C 1/1, PM 3/2 M 1/1) = 30

Question 14

How many total teeth does an adult cat and dog normally have?

Answer 14

Cat: 30
Dog: 42

Question 15

List the carnassial teeth in dogs

Answer 15

1. Maxillary PM4
2. Mandibular M1

Question 16

Which teeth have 3 roots in dogs?

Answer 16

• Maxillary PM4, M1, M2

(no mandibular teeth with 3 roots)

Question 17

Which teeth have 3 roots in cats?

Answer 17

• Maxillary PM4
• Maxillary M1 can have 1-3 roots

(no mandibular teeth with 3 roots)

Question 18

What number is the Left maxillary canine tooth?

Answer 18

204

Question 19

What can be used to rinse the mouth prior to dental procedures in cats and dogs?

Answer 19

• Chlorhexhexidine
• Molecular iodine (no resistance, lasts 72 hrs)

Question 20

________ probes have rounded tips

Answer 20

Periodontal

Question 21

________ probes have sharp tips

Answer 21

Explorer (only used for hard tissue)

Question 23

Incisors and Canine teeth in dogs and cats have ____ roots

Answer 23

1

Question 24

First molars always end in _____

Answer 24

09

(109,209,309,409)

Question 25

Canine teeth always end in _____

Answer 25

04

(104, 204, 304, 404)

Question 26

In regards to numbering the teeth in cats, which are absent?

Answer 26

no upper and lower PM1: no 105, 205, 305, 405

no lower PM2: no 306 or 406

Question 27

Which probe can be used to assess sulcus depth?

Answer 27

Periodontal probe (rounded tip)

Question 28

What probe can be used to assess fractures, resorptive lesions, caries, and pulp exposure?

Answer 28

Explorer probe (sharp tip used for hard tissues)

Question 29

What is the normal depth of the canine and feline sulcus?

Answer 29

Canine: 0-3 mm
Feline: 0-0.5 mm

IMPT TO KNOW

Question 30

When is the parallel technique indicated when performing dental radiographs?

Answer 30

Only used for mandibular (lower) PM4 and molars

Question 31

You suspect a fracture of tooth number 209. How would you properly position your patient and the xray beam to take images?

Answer 31

209 = Maxillary M1

• Patient in sternal recumbancy
• Use Bisecting angle technique
• Place the Xray beam in a caudal rostral oblique angle

Question 32

How can you properly take dental radiographs of the maxillary pre molars?

Answer 32

• Patient in sternal recumbancy
• Use Bisecting angle technique
• Place the Xray beam in a lateral oblique angle

Question 33

How can you properly take dental radiographs of the maxillary incisors?

Answer 33

• Patient in sternal recumbancy
• Use Bisecting angle technique
• Place the Xray beam in a rostro-caudal oblique angle

Question 34

How can you properly take dental radiographs of the mandibular incisors?

Answer 34

• Patient in dorsal recumbancy
• Use Bisecting angle technique
• Place the Xray beam in a rostro-caudal oblique angle

(captures all incisors AND canines in 1 view unlike maxillary incisors/canines which require multiple views)

Question 35

How can you properly take dental radiographs of mandibular PM1-PM3?

Answer 35

• Patient in dorsal recumbancy
• Use Bisecting angle technique
• Place the Xray beam in a lateral oblique angle

Question 36

How can the number of tooth roots affect dental radiographic imaging?

Answer 36

3 rooted teeth superimpose, so multiple views must be taken

Question 37

True or False: All maxillary incisors of a large breed dog can be captured on one radiograph.

Answer 37

False

(True for the mandible)