Dentistry Topic 1/2 Flashcards
(77 cards)
What do you call animals who get 2 sets of teeth?
Diphyodont.
What is the canine primary teeth formula? Which teeth are they missing?
I 3/3 C 1/1 P3/3
No molars and one of the pre molars missing.
What is the canine permanent teeth formula?
I3/3 C1/1 P4/4 M2/3
When do the canine permanent teeth erupt?
3-7 months.
What is the primary cat formula. Which teeth don’t they have?
I3/3 C1/1 P 3/2
No molars.
When to cats permanent teeth erupt?
3-5 months.
What is the permanent tooth formula for cats?
I3/3 C1/1 P3/2 M1/1
How are cats teeth different from dogs
One less PM on top and 2 lwss on bottom. 1 less molar on top, 3 less on bottom.
What is the bulk of the tooth made of?
Dentine.
What is the dentine covered by on the root and the crown?
Enamel crown, cementum root.
What is in the center of the tooth?
Pulp.
What is enamel mostly made of?
96% inorganic hydroxyapatite crystals.
What is the hardest substance in the body?
Enamel.
What is the second hardest substance in the body?
Dentine.
What % of dentin is inorganic?
70%
What is the main structure of dentin?
Dentinal tubules.
How many dentinal tubules are in 1mm of dentin. What is the issue with these?
30-40 thousand. Extend to pulp so dentin exposure can transmit bacteria.
Where does the PL attach to the roots?
To the cementum.
What % of cementum is inorganic? What is it similar to?
40-50-%. Bone.
What is the pulp? Where is it located?
Living tissue at the center of the tooth. Pulp chambers, root canals.
What is pulp made of?
connective tissue, vessels, nerves, lymph vessels,collagen and messynchymal cells.
Loss of blood supply to tooth is called ___ and leads to a blue appearance called?
Ischemia, pulp necrosis.
Accidental over-heating from scaling can cause?
pupitis, pulp necrosis.
The gingiva surround the tooth and alveolar bone forming a ___?
Cusp