5. Eruption and Occlusion in the Permanent Dentition

Question 1

3

What are the 6 stages of eruption for the permanent teeth?

Question 2

5

What area the two necessary processes for pre-emergent eruption?

Question 3

5

It has been shown that animals that the rate of bone resorption and the rate oof tooth eruption are not controled by the same physiological mechanism. Therefore, these studies indicate that ___ is the rate limiting factor in pre-emergent eruption.

Question 4

6

What are 5 theories of physiologic mechanisms that may be associated with permanent tooth eruption?

Question 5

7

What systemic system is involved in permanent tooth eruption?

Question 6

7

There is a high correlation of issues with tooth eruption and decreased function of what two endocrine glands?

Question 7

7

How may premature loss of primary teeth affect eruption of permanent?

Question 8

7

Will supernumerary teeth delay or accelerate permanent eruption?

Question 9

7

How may trauma impact eruption?

Question 10

8

During the time of crown formation, there is a very slow _______ drift of the tooth follicle within the bone.

Question 11

8

Beginning of calcification to completion of enamel formation takes how many years? What are two exceptions to this?

Question 12

8

Each tooth starts to move toward occlusion at approximately the time of what?

Question 13

8

The leading edge of the crown breaks through the alveolar crest at when approximately how much of the root is formed?

Question 14

8

Eruption into the oral cavity to root completion takes how many years?

Question 15

8

What is the interval between crown completion and eruption into occlusion?

Question 16

9

Generally, loss of primary molars before age ___ delays eruption of permanent premolars.

Question 17

9

Generally, the loss of primary molars after age ___ acceleerates eruption of permanent premolars.

Question 18

10

What is the term for the abnormal direction of tooth eruption that can occur with any tooth and will cause interference with normal tooth eruption?

Question 19

10

What is the term for a condition where the tooth fails to erupt into the oral cavity and may denote loss of eruptive potential.

Question 20

10

What is the term for fusion of cementum with bone occuring at any time during course of eruption and with any tooth and will cause interference with normal tooth eruption?

Question 21

13

What is the eruption sequence of the maxillary permanent teeth?

Question 22

13

What is the eruption sequence of the mandibular permanent teeth?

Question 23

14

What percent of the time does the desired eruption sequence of the permanent teeth occur?

Question 24

14

What is the most common variation in the permanent teeth eruption sequence?

Question 25

14

Incisor transition from primary to permanent is typically complete by _____ to establish the classic/stereotypical mixed dentition stage of permanent first molars and incisors along with primary teeth (C,D,E) in the buccal segment.

Question 26

15

What is symmetrical eruption?

Question 27

15

Permanent teeth tend to drift ____ and tip ____ if space is available.

Question 28

15

Mesial movement of permanent teeth is the greatest during _____ and ______ into the oral cavity before reaching occlusal contact.

Question 29

16

What is the average age of eruption of permanent first molars?

Question 30

16

Starting at _____, practitioners should screen for pathology associated with eruption such as ectopic eruption and pericornitis.

Question 31

17

What are the first succedaneous teeth to erupt? What does this mean?

Question 32

17

At what age do maxillary entral incisors and mandibular lateral incisors erupt?

Question 33

17

What is typically the last group of permanent incisors to erupt?

Question 34

17

What is the term for a discrepancy in the sum of the MD crown width between the primary and permanent incisors?

Question 35

18

The Ugly Duckling stage is the time occuring starting with the eruption of the ______ and ending with the eruption of the ______.

Question 36

18

What is the average age for the Ugly Duckling stage?

Question 37

18

What characterizes the ugly duckling stage?

Question 38

18

Why do primary teeth appear whiter than permanent teeth?

Question 39

19

At what age do mandibular permanent canines typically erupt?

Question 40

19

What is typically the last succedaneous tooth to erupt and at what age does this occur?

Question 41

19

At what age should kids be screened for pathology associated with canine eruption?

Question 42

19

What percent of kids exhibit displaced maxillary canine eruption?

Question 43

23

Monitoring the eruption of which teeth is important when considering any age manipulation of Leeway Space?

Question 44

25

Which teeth are not succedaneous?

Question 45

25

At what age do second molars erupt?

Question 46

26

What is class I molar relationship and what percent of the time does it occur?

Question 47

26

What is class II molar relationship and what percent of the time does it occur?

Question 48

26
What is class III molar relationship and at what percent of the time does it occur?

Question 49

26

Which cusps and grooves determine the molar relationship?

Question 50

29 and 30

What are the two types of class II molar relationships seen?

Question 51

33

What is class II division 1 molar relationship?

Question 52

33

What is class II division 2 molar relationship?