Primary teeth descriptors

Question 1

Maxillary central incisors

Answer 1

1. Crown wider and shorter than laterals
2. M&D line more convex than permanents.
3. Root labially inclined and slight distal inclination of root.
4. Root less tapered

Question 2

Maxillary lateral incisors

Answer 2

1. Greater rounding on distal incisal edge.
2. Bulkier than permanent lateral incisor
3. Crown narrower than primary central incisors.
4. Palatal concave.

Question 3

Maxillary canines

Answer 3

1. Symmetrical crown
2. Wide M-D
   3.Diamond shape
   4.Labial slope is sharper and straighter than mandibular.

Question 4

Maxillary first molars

Answer 4

1. Molar tuburcle of zuckerkandl on MB.
2. Crown shorter on the distal
3. Wider M-D than height of crown.
4. Occlusal trapezoid shape

Question 5

Maxillary second molar

Answer 5

1. Slight buccal fissure seperates MB & DB cusps
2. DP cusp smaller than MP cusp
3. Narrower on occlusal plane wider on cervical margin
4. 3 roots- palatal the longest

Question 6

Mandibular central incisors

Answer 6

1. Roots slightly labially inclined.
2. More symmetrical than lateral incisors
3. Cingulum less defined than lateral incisors
4. Root shorter than lateral

Question 7

Mandibular lateral incisors

Answer 7

1. DI corner more rounded
2. crown more fan shaped than central.
3. Root longer than central and more distally inclined
4. Incisal edge sloped towards distal.

Question 8

Mandibular canine

Answer 8

1. labial slightly flatter than max canine
2. lingual shows more concavity
3. labial slope more rounded than maxillary canines.
4. less pronounced marginal ridges and cingulum than maxillary canines.

Question 9

Mandibular first molar

Answer 9

1. Molar tubercle of zukerkandl
2. Prominet cervical bulge
3. Rectangle outline
4. 4 cusps

Question 10

Mandibular second molar

Answer 10

1. Narrow and occlusal/ wider and cervical margin.
2. Mesial root often bifurcated at apex
3. Distal root has no bifurcation.
4. 5 cusps- 3 buccal, 2 lingual