300 OA Facts

Question 1

Primary teeth are ______ than permanent teeth are consequently more worn

Answer 1

Less mineralized

Question 2

What is the difference in space from the primary to the permanent dentition?

Answer 2

2-4mm

Question 3

Mamelons that remain beyond the age of 10 generally indicate an?

Answer 3

Open bite

Question 4

Calcification of the primary roots is normally completed at age?

Answer 4

3-4 years of age

Question 5

What is the usual pattern of eruption of primary teeth?

Answer 5

Central’s, laterals, 1st molars, canines, 2nd molars

Question 6

The primate space develops in the Mx primary dentin between?

Answer 6

Between the lateral and canine

Question 7

The mandibular primary primate space is located between?

Answer 7

Between the canine and first molar

Question 8

The primary spacing for the anterior teeth is most frequently caused by the?

Answer 8

Growth of the dental arches

Question 9

The direction of the primary enamel rods in cervical third is in the?

Answer 9

Occlusal direction

Question 10

Primary molars differs from permanent molars in that their roots are more?

Answer 10

Divergent

Question 11

The primary molar lacks an identifiable?

Answer 11

Root trunk

Question 12

The primary Mn central incisor has the smallest _______ crown dimension?

Answer 12

Faciolingual

Question 13

The primary and permanent Mx central incisor is the most?

Answer 13

Bilaterally symmetrical tooth

Question 14

In delayed resorption of primary incisors the permanent incisors usually erupt?

Answer 14

Lingual (shark teeth)

Question 15

The primary central incisor exhibits a prominent _______ on the facial and lingual surfaces?

Answer 15

Cervical ridge

Question 16

From the facial view the crown of a primary canine has a?

Answer 16

Mesio-incisal slope longer than the distoincisal

Question 17

The cusp tip of the primary canine is generally off set to the?

Answer 17

Distal

Question 18

The Mx 1st primary molar has a crown that somewhat resembles a?

Answer 18

Permanent premolar

Question 19

The Mx 1st molar has roots that resembles a typical?

Answer 19

Permanent Mx molar

Question 20

The cervical ridge is most prominent for the primary MX teeth on the what surface of the 1st molar?

Answer 20

MF surface

Question 21

The primary MX 2nd molar is the primary tooth that generally has an?

Answer 21

Oblique ridge

Question 22

Primary 2nd molar is the only primary posterior tooth that has?

Answer 22

And oblique and transverse ridges and DL groove

Question 23

The primary end molar generally exhibits a ?

Answer 23

Cusp of carabelli

Question 24

What is the last primary teeth to erupt?

Answer 24

MX 2nd molars

Question 25

The primary 2nd molar exhibits more cusps than?

Answer 25

Primary 1st molar

Question 26

The primary tooth that has the most distinctly prominent facial cervical ridge is?

Answer 26

MN 1st molar

Question 27

Facial view of a primary MN 1st molar the CEJ is most apically positioned on the ?

Answer 27

Mesial 1/3

Question 28

The primary MN 1st molar usually exhibits a ?

Answer 28

Distal triangular fossa Central fossa usually displaced to the distal

Question 29

The primary MN 1st molar has the MOST distinct?

Answer 29

Distinct transverse ridge

Question 30

The primary 1st MN molar does NOT look like any?

Answer 30

Permanent tooth

Question 31

The primary teeth that differ most from permanent teeth are?

Answer 31

MN 1st molars

Question 32

The highest and sharpest cusp on a primary Mn 1st molar is the ?

Answer 32

Mesiolingual

Question 33

The teeth whose function is primarily biting?

Answer 33

Incisors

Question 34

The Mx central has the greatest?

Answer 34

Faciolingual axial inclination

Question 35

The tooth that has the greatest cervical curvature (on mesial) of any other tooth?

Answer 35

Mx central

Question 36

The CEJ dips dippers on?

Answer 36

“Think Mx Central” - ant teeth than post teeth - Mx than MD - mesial side of tooth than distal - greatest on mesial of the MX central

Question 37

The only anterior teeth that are wider mesio-distally than faciolingually

Answer 37

Mx incisors

Question 38

Has the greatest MD crown dimension of any ANTERIOR tooth

Answer 38

Mx central

Question 39

This tooth has measurement that is nearly identical for inciso-cervical versus mesio-distal?

Answer 39

Mx central