Permanent teeth descriptors

Question 1

Maxillary central incisors

Answer 1

1.Shovel shaped crown
2.Mesio-incisal edge squarish.
3.Disto-incisal edge more rounded.
4.Pronounced CEJ

Question 2

Maxillary lateral incisors

Answer 2

1. Square mesio-incisal edge.
2. Rounded disto-incisal edge.
3. Has a pit unlike central incisor
4. Shovel shape
5. Smaller than central

Question 3

Maxillary canines

Answer 3

1. Pentagonal shaped crown
2. Bulky cingulum
3. Single pointed cusp
4. Mesial slope of incisal edge shorter than distal.

Question 4

Maxillary first premolar

Answer 4

1. Bi-furcated root
2. Buccal wider that palatal
   3.Buccal cusp higher than palatal cusp
3. Concave mesial/ distal outline

Question 5

Maxillary second premolar

Answer 5

1. More rounded crown shape that first premolar.
2. More distal lean on root that first premolar.
3. Two cusps of similar height.
4. Distal narrower and more curved

Question 6

Maxillary first molar

Answer 6

1. Cusp of carabelli
2. Irregular cervical margin
3. Mesial wider and straighter
4. Distal narrower and more curved.

Question 7

Maxillary second molar

Answer 7

1. Narrower on cervical margin
2. Wider of occlusal plane
3. Slight buccal fissure seperates MB & DB.
4. Mesial and distal surfaces convex.

Question 8

Maxillary third molar

Answer 8

1. 3 lobes
2. May not have DL cusp at all.
   3.Transverse ridge
3. 3 roots closer together and shorter

Question 9

Mandibular central incisors

Answer 9

1. crown narrower and more symmetrical than lateral.
2. Straight root- slight curve on mesial side of root.
3. Straighter incisal edge compared to lateral
4. Cingulum more central.

Question 10

Mandibular lateral incisors

Answer 10

1. Crown slightly larger and more fan shaped than central.
2. Disto-incisal edge more curved.
3. Root has definite curve to distal.
4. Cingulum offset distally

Question 11

Mandibular canines

Answer 11

1. Smaller and less bulky than max canines.
2. Cusp not has sharp at max canines.
3. Rounded disto-incisal and mesio-incisal angles.
4. Distal incisal slope longer then mesial slope.

Question 12

Mandibular first premolar

Answer 12

1. Narrower and appears taller than second premolar.
2. Tip of cusp offset mesially
   3.Mesial slope shorter than distal slope.
3. Cusps unequal height.

Question 13

Mandibular second premolar

Answer 13

1. Wider and appears shorter than first premolar.
2. Tip of cusp centered
3. Less sharp cusp than first premolar
4. M&D slopes of equal length

Question 14

Mandibular first molar

Answer 14

1. 5 cusps- 3 buccal & 2 lingual
2. Two roots- 1 mesial and 1 distal unlike max first molar has 3.
3. One slight lingual fissure
4. …

Question 15

Mandibular second molar

Answer 15

1. 4 cusps- 2 buccal, 2 lingual
2. ML cusp higher than DL cusp.
3. MB cusp higher than DB cusp
4. 2 roots- closer together and shorter than first molar.

Question 16

Mandibular third molar

Answer 16

1.2 roots often fused.
2. Smaller than other 2 molars
3. Transverse ridge
4. 3 cusps.