Bell ringer practice

Question 1

Function of periodontal ligament

Answer 1

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

Question 2

Furcation

Answer 2

where the roots divide

Question 3

number of cusps on lower 2nd premolar

Answer 3

3

Question 4

part of tooth covered by enamel

Answer 4

anatomical crown

Question 5

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

Answer 5

bone, then cementum

Question 6

what perforates dentine

Answer 6

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

Question 7

what makes dentine

Answer 7

odontoblasts

Question 8

what are the two nociceptors in the pulp?

Answer 8

Ab = fast and sharp pain
c = deep dull pain

Question 9

part of the crown seen in the oral cavity

Answer 9

clinical crown

Question 10

opening of root tip

Answer 10

apical foramen

Question 11

function of height of contour

Answer 11

protect the gingiva surrounding the tooth

Question 12

how many lobes do incisors and canines have

Answer 12

4 lobes

Question 13

how many lobes do premolars have

Answer 13

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

Question 14

how many lobes do molars have

Answer 14

one lobes for every cusp

Question 15

how many mamelones do anterior teeth have

Answer 15

3 mamelons

Question 16

extra enamel bump is called

Answer 16

tubercle

Question 17

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

Answer 17

fissure

Question 18

purpose of embrasures

Answer 18

clear out food

Question 19

lack of gingival embrasure leads to what

Answer 19

black triangle

Question 20

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

Answer 20

5 months

Question 21

when do all prim teeth show calcification

Answer 21

6-7 months

Question 22

when do all primary teeth calcify

Answer 22

birth

Question 23

when do permanent first molars calcify

Answer 23

birth

Question 24

how much root has formed at eruption

Answer 24

50%

Question 25

how much root has formed when tooth emerges into cavity

Answer 25

75%