teeth

Question 1

maxillary central incisor

11/21

Answer 1

• thick straight root with blunt apex
• square mesial corner, round distal corner
• large cingulum displaced distally

Question 2

mandibular central incisor

41/31

Answer 2

• straight incisal edge
• highly symmetrical
• centered cingulum
• long thin straight root

Question 3

maxillary lateral incisor

12/22

Answer 3

• square mesial corner, round distal corner
• centered cingulum
• less symmetrical than central

Question 4

mandibular lateral incisor

42,32

Answer 4

• asymmetrical
• incisal edge slopes distally
• cingulum slightly distally placed
• long thin straight root

Question 5

maxillary canine

13, 23

Answer 5

• sharp pointed cusp, diamond crown
• BULKY centered cingulum.
• defined palatal ridges
• single long blunt root.

Question 6

mandibular canine

43, 33

Answer 6

• less pointed cusp than maxillary (looks more rectangular)
• cingulum distally placed
• flatter lingual surface
• long THIN root

Question 7

maxillary first premolar

14, 24

Answer 7

• buccal cusp taller, broader than palatal cusp
• mesial marginal groove
• often 2 roots
• *longer mesial slope on buccal cusp

Question 8

mandibular first premolar

44, 34

Answer 8

• buccal cusp taller and broader than lingual cusp
• crown TILTED on occlusal plane 45deg to long axis
• small & non-functional lingual cusp.
• 1 root

Question 9

maxillary second premolar

15, 25

Answer 9

• buccal & palatal cusps almost equal length
• oval occlusal outline, more supplemental grooves
• 1 root, longer than 4

Question 10

mandibular second premolar

45, 35

Answer 10

• buccal cusp only slightly taller than lingual cusp, centered over apex
• can have 2 or 3 cusps, 3 cusp form has lingual groove between lingual cusps
• circular occlusal outline, y-shaped fissures, distally-placed lingual groove

Question 11

maxillary first molar

16, 26

Answer 11

• Rhomboidal
• Occlusal fissures: AO is L shaped, OP // oblique ridge
• 4 cusps, Carabelli’s cusp may be present
• Square DiPa cusp (smallest cusp)
• 3 Divergent roots

Question 12

mandibular first molar

46, 36

Answer 12

• Rectangular
• 5 cusps: 3 buccal, 2 lingual
• 2 divergent roots

Question 13

maxillary second molar

17, 27

Answer 13

• Rhomboidal
• Occlusal fissures: AO is L shaped, OP // oblique ridge
• 4 cusps
• Round DiPa cusp (smallest cusp)
• 3 less divergent roots

Question 14

mandibular second molar

47, 37

Answer 14

• Hot cross bun
• 2 less divergent roots
• Lingual cusps taller than buccal
• Prominent MeBu bulge