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Flashcards in Bell ringer practice Deck (25)
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1

Function of periodontal ligament

viscoelastic cushion, sensory organ, adaptive tooth movement, osteogenesis, immune

2

Furcation

where the roots divide

3

number of cusps on lower 2nd premolar

3

4

part of tooth covered by enamel

anatomical crown

5

Which has the most organic material? a) enamel b) dentine c) cementum d) bone

bone, then cementum

6

what perforates dentine

tubules that lead to pulp (communication as a unit: "dentin-pulp complex")

7

what makes dentine

odontoblasts

8

what are the two nociceptors in the pulp?

Ab = fast and sharp pain
c = deep dull pain

9

part of the crown seen in the oral cavity

clinical crown

10

opening of root tip

apical foramen

11

function of height of contour

protect the gingiva surrounding the tooth

12

how many lobes do incisors and canines have

4 lobes

13

how many lobes do premolars have

4 lobes, except for the lower 2nd premolar (5 lobes)

14

how many lobes do molars have

one lobes for every cusp

15

how many mamelones do anterior teeth have

3 mamelons

16

extra enamel bump is called

tubercle

17

a narrow opening within a groove due to imperfect fusion of enamel

fissure

18

purpose of embrasures

clear out food

19

lack of gingival embrasure leads to what

black triangle

20

when do you see signs of calcification of incisors, canines, and 1st molars

5 months

21

when do all prim teeth show calcification

6-7 months

22

when do all primary teeth calcify

birth

23

when do permanent first molars calcify

birth

24

how much root has formed at eruption

50%

25

how much root has formed when tooth emerges into cavity

75%