Posterior primary teeth

Question 1

Primary molar crowns are wider in this dimension and shorter in this dimension?

Answer 1

Wider mesiodistally

Shorter cervico-oclusally

Question 2

Which primary molar is smaller?

Answer 2

Primary first molars are smaller than primary second molars

This is opposite of permanent molars which have bigger permanent first molars than permanent second molars

Question 3

Which cervical ridges are prominent from the proximal view and this causes what?

Answer 3

Mesial cervical ridges are prominent from the proximal view and this causes the cervical line to be positioned more apically on the mesial.

Question 4

Where are root furcations located?

Answer 4

They are located nearer to the crown with little or no root trunk.

Question 5

Which primary molar most closely resembles the permanent maxillary first molar?

Answer 5

Primary maxillary second molar

Question 6

What is significiatn about the mesiolingual corner of the occlusal surface on primary maxillary 2nd molar?

Answer 6

It is compressed towards the distal

Question 7

The primary mesiobuccal cusp on primary maxillary second molar is equal in size to what cusp?

Answer 7

mesiolingual cusp

Question 8

Which permanent tooth does the primary mandibular second molar most closely represents?

Answer 8

Permanent mandibular first molar

Question 9

The primary mandibular second molar has how many cusps and how are they in relation to one another?

Answer 9

3 cusps of equal size unlike the permanent mandibular first molar

Question 10

What permanent tooth does the primary maxillary first molar resemble?

Answer 10

Permanent maxillary molars

Question 11

How many cusps are there for the primary maxillary first molars?

Answer 11

Mesiobuccal cusp - widest and longest
Mesiolingual cusp - sharpes
Distobuccal
Distolingual - sometimes absent

Question 12

What divides the large mesiobuccal cusp from the indistinct distobuccal cusp on maxillary first molars?

Answer 12

A notch distal to center

Question 13

Where is the mesial marginal ridge directed primary maxillary first molar?

Answer 13

Distolingually

Question 14

What are occlusal fossa patterns on maxillary first molars?

Answer 14

Three fossa

• large mesial traingular fossa
• medium central fossa
• minute distal fossa

Question 15

What pattern do the grooves on primary maxillary first molars?

Answer 15

H pattern

Question 16

On which tooth is the mesial marginal ridge overdeveloped?

Answer 16

Primary mandibular first molar

Question 17

On the primary mandibular first molars what is the largest and longest cusp?

Answer 17

Mesiobuccal cusp