dentition

Question 1

features of the tooth

Answer 1

crown
cusp
enamel
dentine
pulp horn
gingiva 
neck - cementoenamel junction
pulp cavity
periodontal ligament
root canal

Question 2

general features of maxillary teeth

Answer 2

more buccal wear and wider

Question 3

general features of mandibular teeth

Answer 3

more lingual wear and narrower

Question 4

incisors

Answer 4

flat and blade like, chiseled edge

Question 5

canines

Answer 5

conical crown
diamond edge
long root
single pointed cusp on bulbous crown
medial and distal lingual fossa

Question 6

premolars

Answer 6

rounder and shorter than canines
2 cusps
usually single root

Question 7

molars

Answer 7

large
square
4 or 5 cusps
2 or 3 roots

Question 8

maxillary incisors

Answer 8

rounder root, cingulum

Question 9

mandibular incisors

Answer 9

smaller and narrower

Question 10

maxillary central incisor

Answer 10

mesially longer and straighter crown, distally rounder corner, root deviates distally

Question 11

maxillary lateral incisor

Answer 11

mesially longer and straighter crown, distally rounder corner, longer root curves distally

Question 12

mandibular central incisor

Answer 12

vertical on both sides, crown smaller than lateral incisor, root deviates distally

Question 13

mandibular lateral incisor

Answer 13

bigger crown than central incisor, shorter distally, crown buccal surface curves distally, more wear distally, root deviates distally

Question 14

maxillary canine

Answer 14

longest root, round and triangular, mesial diamond shape, pointed cingulum

Question 15

mandibular canine

Answer 15

smaller, no cingulum, distal diamond shape, cusp less pointed, root can bifurcate, distally inclined

Question 16

maxillary 1st premolar

Answer 16

often 2 roots (separated by mesial groove), longer cusp buccally, cusps separated by mesiodistal groove

Question 17

maxillary 2nd premolar

Answer 17

1 root, longer, 2 cusps of more equal length, longer distal cup

Question 18

mandibular 1st premolar

Answer 18

1 root, central enamel ridge, buccal cusp longer and larger than lingual

Question 19

mandibular 2nd premolar

Answer 19

1 root, 3 cusps, occlusally appears square, buccal cusp longer

Question 20

maxillary molars

Answer 20

3 roots - 2 buccal and 1 lingual

Question 21

mandibular molars

Answer 21

2 roots - 1 mesial and 1 distal

Question 22

maxillary 1st molar

Answer 22

4 cusps
splayed roots
wide crown
erupts and wears early
inter proximal contact facets

Question 23

maxillary 2nd molar

Answer 23

4 cusps
smaller narrower roots that deviate distally
contact facets

Question 24

maxillary 3rd molar

Answer 24

triangular outline occlusally

one mesial contact

Question 25

mandibular 1st molar

Answer 25

5 cusps - 3 buccal (higher), 2 lingual
crown longer medio-distally
distally curved roots (distal less so)

Question 26

mandibular 2nd molar

Answer 26

4 cusps - 2 lingual, 2 buccal
less oblong than M1 - more square
buccal surface bulbous
roots closer together than M1 and distally curved

Question 27

mandibular 3rd molar

Answer 27

similar to M2 but smaller - roots often fused and distally inclined