Teeth and Mastication Flashcards
(6 cards)
1
Q
Brachydont
A
- having short crowns, well-developed roots, and only narrow canals in the roots (as in humans)
- teeth that erupt completely and do not grow subsequently
- All the teeth of a carnviore, incisor of ruminants, teeth of pig except tusks (incisors)
- Once they erupt, stay in animals mouth that way… permanent. If tooth gets damaged or knocked out, nothing will form in its place
2
Q
Hypsodont
A
- Teeth that continue to grow as a result of attrition
- All the teeth of horse, cheek teeth of ruminant and tusks of pig
- has teeth “in reserve” to replace damaged or worn down teeth. A lot of teeth left beneath the gum allows for more of it to erupt. Some fall out if there is not enough left beneath the gum line
- Hypsodont is a pattern of dentition with high-crowned teeth and enamel extending past the gum line, providing extra material for wear and tear.
3
Q
Teeth formula
A
I C P M (top jaw)
———————-
I C P M (bottom jaw)
Can do (example canine):
3 1 4 2 (top jaw)
3 1 4 3 (bottom jaw)
- Heterodonts: they are all quite different (teeth). Different types of
Teeth throughout the mouth
- Molars are much wider than premolars:
important in crushing
4
Q
Horse (Hypsodont) Teeth
A
HUGE ROOTS
- absence of the canine (can be present but rudimentary-male horses)
- premolars and molars, go far into gum–> that extra storage (2 or 3x as much beneath the gum)
M3 additional molar in comparison to the dog
Wolf tooth–> can be removed by equine dentists
-tooth gets shorter over the year and then the tooth erupts to maintain
The same amount of crown and occlusal surface. Bone constantly remodeling so that when the tooth erupts there is growth at the root.
RABBIT: teeth will continue to grow and erupt for sure!
5
Q
Major Salivary Glands
A
- Parotid (always behind the ear, work down from ear)
- Sublingual
- Mandibular (can vary in shape depending on species)
- Zygomatic (in cats and dogs, behind eye)
- Minor glands: lingual, palatine, buccal, labial (lip)
6
Q
A
