L.2 Development of the Dentition 2

Question 1

Spacing is good yo: more than 6mm will mean a __% chance of crowding in the permanent dentition

Answer 1

0%

Question 2

Spacing of __-__mm in the primary dentition yields a 205 chance of crowding in the permanent dentition

Answer 2

3-6mm

Question 3

Spacing of less than 3mm in the primary dentition yields __% probability of crowding in the permanent arch.

Answer 3

50%

Question 4

What is the % chance of crowding in the permanent teeth id there is no spacing in the primary teeth? crowding in the primary??

Answer 4

no spacing 66%, crowding 100%!

Question 5

Where are the two primate spaces?

Answer 5

mesial to the maxillary canine and distal to the mandibular canine

Question 6

What is the ideal occlusion for primary teeth? What permanent class occlusal relationship will it led to ?

Answer 6

mesial step…class I

Question 7

an exaggerated mesial step occlusion in primary teeth is most likely to lead to which class occlusion in the permanent occlusion?

Answer 7

class III

Question 8

a distal step occlusal relationship in primary teeth is most likely to lead to what class permanent occlusal relationship?

Answer 8

class II

Question 9

What are the ideal overbites and over jets?

Answer 9

2mm for both

Question 10

When is the greatest spacing for primary teeth?

Answer 10

3-4 years old

Question 11

Your strong point lol….MIXED DENTITION!!! Early- __-__ years old = incisors and first molars

Answer 11

6-9 years old

Question 12

Your strong point lol….MIXED DENTITION!!! Late- ___-___ years old = canines, 1st, 2nd PMs

Answer 12

9-12 y/o

Question 13

SO covering both early and late mixed dentition it is from the ages of ___-___

Answer 13

6-12 yo

Question 14

ERUPTION FOLLOWS EXFOLIATION BY HOW LONG?

Answer 14

6 months

Question 15

Enamel of permanent tooth complete about ___ years prior to eruption

Answer 15

3 years

Question 16

Root formation complete about __ years after eruption (permanent teeth)

Answer 16

3 years

Question 17

Eruptive force of _______ (the freaking KEY to space mgmt) closes spaces between remaining primary molars

Answer 17

1st permanent molar

Question 18

What are the two most common primary types of occlusion?

Answer 18

1.mesial step (49%) 2. flush (37%)

Question 19

In an Angle Class I, the chin grows in which direction?

Answer 19

downward and outward

Question 20

In an Angle Class II, the chin grows in more of a _____ direction.

Answer 20

downward (vertical)

Question 21

In an angle class III, the chin grows in more of a ______ direction.

Answer 21

horizontal

Question 22

How much larger are the maxillary permanent incisors than the primaries?

Answer 22

7.6mm larger

Question 23

How much larger are the mandibular permanent incisors than the primaries?

Answer 23

6.0mm larger

Question 24

What % of 6 year olds have a diastema when their maxillary centrals erupt?

Answer 24

44-97%!!! NORMAL

Question 25

What are two reasons for diastema if it is not normal?

Answer 25

habit or frenum

Question 26

What is the eruption sequence of the permanent maxillary teeth? How is it different from mandibular?

Answer 26

6-1-2-4-5-3-7-8 (mandibular is MUCH MORE ORDERLY because the canine plays nice...6-1-2-3-4-5-6-7-8)

Question 27

What is the name for tooth size difference between the primary canines and molars and the permanent successors.

Answer 27

LEEWAY SPACE

Question 28

The difference in primary space and permanent space on the maxilla is ____mm per quadrant

Answer 28

1.5mm per quadrant

Question 29

The difference in primary space and permanent space on the mandible is ____mm per quadrant

Answer 29

2.5mm

Question 30

What is the majority of leeway space caused by?

Answer 30

E space (primary second molar)

Question 31

What is the normal E space on the max and mand?

Answer 31

max 1.5mm mand 2.0mm

Question 32

**At birth, the only permanent teeth that show traces of hard tissue formation are the ____________

Answer 32

first permanent molars

Question 33

With the exception of the third molars, all permanent teeth demonstrate hard tissue formation at @ ___ years of age...BUT when do the whizzy's come in?

Answer 33

3 years...whizzy at 8 years

Question 34

Permanent initiation of teeth is at ___ weeks In Utero

Answer 34

20 weeks

Question 35

The permanent 1st molar first molar initiates at ___ months In Utero

Answer 35

5 months

Question 36

Permanent anterior teeth begin developing _______ to the incisal level of the primary teeth

Answer 36

LINGUAL

Question 37

As primary teeth erupt, the permanent successors are positioned lingual to the ______ third of their roots.

Answer 37

APICAL

Question 38

Premolars SHIFT from a location near the _______ area of the primary molars to a location enclosed within the _____ of the primary molars.

Answer 38

occlusal.....roots