bell ringer theory

Question 1

horns central incisors

Answer 1

3 horns

Question 2

variation of central incisors

Answer 2

1) double shovel

2) 3/4 shovel shape

Question 3

horns lateral incisors

Answer 3

2 horns for upper

3 horns for lower

Question 4

variation of lateral incisors

Answer 4

1) shovel-shaped
2) peg-shaped incisors
3) agenesis (tooth missing)

Question 5

horns for canines

Answer 5

1 horn

Question 6

variation for canines

Answer 6

bifurcation of root

Question 7

horns for upper first premolar

Answer 7

2 horns

Question 8

canals for upper first premolar

Answer 8

2 canals

Question 9

horns for upper second premolar

Answer 9

2 horns

Question 10

horns for lower first premolar

Answer 10

1 to 2 horns

Question 11

horns for lower second premolar

Answer 11

2 to 3 horns

Question 12

variation of lower second premolar

Answer 12

Leong’s tubercle

Question 13

accessory cusp found on the MB side of mandibular molar (both permanent and primary)

Answer 13

protostylid

Question 14

variation of max first molar

Answer 14

carabelli cusp

Question 15

components for trigon

Answer 15

mb, ml, db cusps

Question 16

components of talon

Answer 16

dl cusp

Question 17

horns for max first molar

Answer 17

4 or 5 horns

Question 18

where is carabelli cusp found

Answer 18

ml cups

Question 19

horns for max second molar

Answer 19

4 horns

Question 20

variations for upper second molar

Answer 20

enamel pearls, enamel extensions, furcation, carabelli trait

Question 21

horns for lower first molar

Answer 21

5 horns

Question 22

horns for lower second molar

Answer 22

4 horns

Question 23

absence of all teeth

Answer 23

anadontia

Question 24

abrasion

Answer 24

progressive loss of hard tooth substance due to mechanical action other than mastication (eg. improper tooth brushing)

Question 25

attrition

Answer 25

normal wear of teeth due to tooth-to-tooth contact

Question 26

abfraction

Answer 26

tooth tissue loss that occurs at the gingival margin due to bending forces applied to the tooth

Question 27

erosion

Answer 27

gradual loss of tooth tissue due to chemical processes (eg. acid)

Question 28

root bent

Answer 28

dilaceration

Question 29

extra enamel at the primary upper molars

Answer 29

parastyle