4. Eruption and Occlusion of the Primary Dentition

Question 1

4

What amount of the primary dentition exhibits generalized interproximal spacing? What Baume type is this?

Question 2

4

What amount of primary dentition exhibits no interproximal spacing? What Baume type is this?

Question 3

4

Once established at approximately _____, arches remain spaced or non-spaced over the course of primary dentition.

Question 4

4

Spaced vs. non-spaced arches relate to _____ rather than tooth mass differences.

Question 5

5

Where are primate spaces seen?

Question 6

5

Are primate spaces common in both spaced (Baume I) and non-spaced (Baume II) in primary dentitions?

Question 7

6

What are Leeway spaces?

Question 8

6

Maxillary Leeway spaces are ___ mm per quadrant.

Question 9

6

Mandibular Leeway spaces are ____ mm per quadrant.

Question 10

7

Will there be transitional crowding in the mixed dentition with primary spacing of 3-6mm?

Question 11

7

What percentage of incisor crowding is there with primary spacing that is less than 3 mm?

Question 12

7

What percent of incisor crowding will there be if there is no primary spacing?

Question 13

7

What percent of incisor crowding will there be if the primary teeth are crowded?

Question 14

8

What determines the primary molar relationship?

Question 15

8

What is the flush terminal plane?

Question 16

8

What is the distal step terminal plane?

Question 17

8

What is the mesial step terminal plane?

Question 18

9

What is the percent incidence for the flush terminal plane?

Question 19

9

What is the percent incidence for the mesial step terminal plane?

Question 20

9

What is the percent incidence for the distal step terminal plane?

Question 21

10

What is the normal molar relationship in the primary dentition?

Question 22

10

When the first permanent molars erupt distal to the primary molars, their occlusal relationship (class I, II, III) is initially determined by what?

Question 23

10

Final permanent molar relationship is the result of the cumulative effects of what three things?

Question 24

11

What is early mesial shift?

Question 25

11

What does early mesial shift occur due to?

Question 26

11

Early mesial shift occurs at about what age?

Question 27

12

What is late mesial shift?

Question 28

12

What does late mesial shift often contribute to?

Question 29

12

Why do mandibular permanent molars have a greater late mesial shift?

Question 30

13

What is differential mandibular growth?

Question 31

13

In mixed dentition, how does the differential growth of the jaws carry the mandible relative to the maxilla?

Question 32

14

Distal step always leads to what?

Question 33

14

Mesial step can result in what two kinds of molar occlusion?

Question 34

14

Transition possibilities fro mprimary molar relationships to permanent molar relationships is usually accomplished by what measurement of the lower molar moving forward?

Question 35

15

How should you start analysis of the primary canine occlusion?

Question 36

15

What are the 3 classifications of primary canine occlusion?

Question 37

16

Describe class I (mesial step) of where the cusp of the maxillary primary canine fits?

Question 38

16

Class I mesial step canine occlusion usually results in what relationships?

Question 39

17

Describe class II (distal step/end-on canines).

Question 40

17

Class II (distal step/end-on canines) usually results in what relationships?

Question 41

18

Describe class III (Excessive mesial step) canine occlusion.

Question 42

18

What molar relationship does class III (excessive mesial step) result in?

Question 43

20

What are three types of anterior radiographs?

Question 44

20

What are two types of posterior radiographs?

Question 45

20

What are 3 types of extra oral radiographs?

Question 46

21

What should you be able to identify and outline in an anterior radiograph of the primary dentition?

Question 47

21

Is it normal for permanent incisors to show overlap radiographically? Would overlap seen be a good predictor of future crowding?

Question 48

22

It is important to locate and track the eruption of the ______ while the patient is in primary dentition.

Question 49

23

What three things should be identified to aide in estimations of spacing issues and inform decisions about guidance of eruption?

Question 50

23

If results of clinical examination show asymmetric eruption in the primary or permanent dentition, what should the clinician do?

Question 51

23

What are 4 common examples that might explain why there is asymmetric eruption in the primary or permanent dentition?

Question 52

24

What shape should be seen in the arches of ideal primary occlusion?