Dentistry

Question 1

Pair which one is correct:
1. Anelodont
2. Elodont
3. Aradicular
4. Radicular

a. Tooth with limited period of growth
b. Closed root (horses)
c. Continuous growing teeth
d. Open root (rabbits and rodents)

Answer 1

1 - a
2 - c
3 - d
4 - b

Question 2

What does it mean to have a clinical crown?

Answer 2

Portion of the crown above the gingiva

Question 3

What does it mean to have a reserve crown?

Answer 3

Hypsodont teeth crown portion below the gingival margin

Question 4

(T/F) A hypsodont tooth are a long crowned tooth and a brachydont are a short crowned tooth.

Answer 4

True

Question 5

Can we distinguish the premolars and molars of rabbits?

Answer 5

No, they are indistinguishable aradicular hypsodont cheek teeth

Question 6

What separates out the rodent groups when it comes to dentistry?

Answer 6

Masseter muscle placement (superficial and deep)
- Not the teeth

Question 7

What do you need in an awake oral exam to check on cheek teeth?

Answer 7

Need a speculum - Plastic otoscope cone or nasal speculum in an otoscope handle

Question 8

What is unique in rabbits with their teeth?

Answer 8

They have an extra upper incisor behind the first incisors

Question 9

How much can rabbit incisors grow per year?

Answer 9

10-12 cm per year

Question 10

(T/F) In rabbits all their teeth are closed rooted, hyposont, and all teeth can overgrow.

Answer 10

False - everything is true except their teeth are open rooted

Question 11

How should the upper incisors be positioned against the lower incisors rabbits?

Answer 11

Lower incisors caudal to the upper

Question 12

How should the upper molars be positioned against the lower molars in rabbits?

Answer 12

Lower molars slightly medial to upper molars

Question 13

How do the molar teeth wear in rabbits?

Answer 13

Only by grinding against themselves

Question 14

What are some causes of incisor malocclusions in rabbits?

Answer 14

Congenital, trauma or secondary to cheek teeth malocclusion

Question 15

What are some causes of molar malocclusions in rabbits?

Answer 15

Acquired, vitamin D deficiency from being indoors, inadequate/improper chewing motion, pain from jaw disease or middle ear disease

Question 16

What diet requires rabbits to chew from side to side?

Answer 16

Hay and plants
- Pellet rations chew up and down to crush

Question 17

Why is it harder to figure out if rabbits have incisor malocclusions?

Answer 17

Because they do not see difficulty eating (will not see loss of weight)
They might see injury to tongue or even roof of mouth

Question 18

What will owners see with cheek teeth malocclusions in rabbits?

Answer 18

Difficulty eating, they might see slobbering, dropping feed, act hungry/losing weight

Question 19

What will the inside (lower teeth) of the edges in cheek teeth in rabbits injure? How about the outside edges (upper teeth)?

Answer 19

Inside = Tongue
Outside = Jaw

Question 20

What else can be seen secondarily to cheek teeth malocclusions in rabbits?

Answer 20

Nasolacrimal duct blockage, exophthlamus, facial swelling from apical swelling/abscess, lip and dewlap dermatitis

Question 21

(T/F) Once a rabbit gets malocclusions it is going to be for life but we only want to trim or extract but no torque teeth.

Answer 21

True

Question 22

Which teeth are we able to trim in awake rabbits and which teeth require sedation?

Answer 22

Awake - incisors
Sedation - molars

Question 23

When do incisors have to get trimmed for rabbits?

Answer 23

Every 3-4 weeks

Question 24

What type of equipment should we use for trimming molars in rabbits?

Answer 24

Low speed dental piece with guarded molar grinders (diamond coated bits)
Do not use cutting bits

Question 25

Bone in a rabbits tooth is (strong/fragile) and (thick/thin)

Answer 25

Fragile and thin

Question 26

How do we prevent malocclusions from happening in rabbits?

Answer 26

Not breed affected lines
Feed timothy or other hay to encourage usage of molars
Direct exposure to sunlight

Provide toys/objects to chew on will not really have any benefits

Question 27

Which rodents have all teeth elodont?

Answer 27

Guinea pigs, chinchilla, degu

Question 28

Which rodents have only the incisors elodont?

Answer 28

Rat/mouse, hamster, gerbil, prairie dog

Question 29

What is different in guinea pigs teeth compared to the rabbits?

Answer 29

They have a 30 degree angle to occlusive plane between top and bottom molars (aka the roots are curved)
Their mouth cant open as wide as rabbits

Question 30

In guinea pigs, what is wider, the mandible or the maxilla?

Answer 30

Mandible

Question 31

What is a geriatric issue that happens to guinea pigs because of their teeth?

Answer 31

TMJ issues

Question 32

In guinea pigs it is important to check their tongue, why?

Answer 32

The cheek teeth can overgrow medially and the tongue can become entrapped because of this

Question 33

What is the recommended treatment for guinea pigs if the tongue is entrapped due to a malocclusion?

Answer 33

Extractions are recommended

Question 34

Which teeth are stained yellow- orange in chinchillas?

Answer 34

Incisors

Question 35

Which malocclusions are acquired in chinchillas?

Answer 35

Molars

Question 36

(T/F) Rat/mice like rodents have very thin multirooted teeth.

Answer 36

True