(E1) 6 - Eruptive Movements Part 1

Question 1

All eruptive movements begin during _______ and continue throughout __________

Answer 1

• tooth development
• functional tooth occlusion

Question 2

Positional changes in the tooth due to movement facilitate ________ or
allow the tooth to maintain functional occlusion

Answer 2

eruption

Question 3

___________ controls eruption

Answer 3

Reciprocal signaling

Question 4

What are the 3 phases of eruptive movements?

Answer 4

Question 5

Image of Eruptive Movements

Answer 5

Question 6

Pre-Eruptive Movements: Time, Function, Purpose, Outcome

Answer 6

Question 7

What are the two stages of pre-functional movements?

Answer 7

• intraosseous
• supraosseous

Question 8

Eruptive, Pre-functional Movements: Time, Function, Purpose

Answer 8

Question 9

Post-Eruptive Movements: Time, Purpose, Position

Answer 9

Question 10

What is the function of pre-eruptive movements?

Answer 10

Question 11

Where do pre-eruptive movements occur?

Answer 11

within bony crypts that surround growing tooth germ crown

Question 12

Hard tissues of the tooth recognized during _______ stage : enamel / primary coronal dentin

Answer 12

pre-eruptive

Question 13

Pre-Eruptive Movements: What are the types of movements occurring?

Answer 13

Question 14

Describe what is happening during the different forms of Jaw Development

Answer 14

Question 15

Describe the movement of anterior permanent teeth

Answer 15

Question 16

Describe the movement of posterior permanent teeth

Answer 16

Question 17

All eruptive movements are ______

Answer 17

pre-functional

Question 18

Rate of movement between eruptive stages

Answer 18

Question 19

What is required to establish an eruption pathway?

Answer 19

Question 20

What is required for penetration of a tooth through oral mucosa/emergence into oral cavity?

Answer 20

Fusion of REE to Oral Epithelium

Question 21

What is required for differentiation/remodeling of alveolar bone and PDL?

Answer 21

Question 22

Mechanism of Action for the creation of an eruption pathway

Answer 22

Question 23

What is the outcome as osteoclasts are stimulated to create an eruptive pathway?

Answer 23

Question 24

_____ continues as the tooth moves axially.

Answer 24

• Root Elongation

Question 25

What is occurring during clinical eruption?

Answer 25

Question 26

What is occurring during active eruption?

Answer 26

Question 27

What does clinical eruption mean?

Answer 27

Question 28

Outcomes of Clinical Eruption

Answer 28

Question 29

What is the Junctional Epithelium and what is its function?

Answer 29

Question 30

What is the DGJ?

Answer 30

Dentogingival Junction - the junction between the tooth surface and future gingiva

Question 31

What is active eruption?

Answer 31

Question 32

Mechanism of Action for Active Eruption

Answer 32

Question 33

What are the outcomes of Active Eruption?

Answer 33

Question 34

Define Clinical Crown

Answer 34

the exposed crown extending from the cusp tip to the area of the dentogingival (JE) attachment.

Question 35

Define Anatomical Crown

Answer 35

refers to the entire crown, extending from the cusp tip to the cementoenamel junction.

Question 36

Define Dentogingival Junction

Answer 36

is the point where the free gingival margin, sulcular epithelium and junctional epithelium meet

Question 37

__________ refers to continued exposure of anatomical crown due to an apical shift of gingiva and Junctional epithelium (no tooth movement)

Answer 37

Passive eruption

Question 38

_________________ due to periodontal disease/ inflammation will expose more cementum as JE moves below CEJ due to loss of attachment epithelium:

Answer 38

Gingival recession

Question 39

What does signaling lead to in the coronal region?

Answer 39

signaling leads to bone resorption→eruption path

Question 40

What does signaling lead to in the apical region?

Answer 40

signaling leads to bone deposition and cellular differentiation of root structures→ maintain jaw height

Question 41

The stellate reticulum cells of EO/REE secrete______ binds to receptor ________ on Dental Follicle (DF) cells

Answer 41

- PTHrP - PTH1R

Question 42

Impact of PTHrP binding to PTH1R on DF:

Answer 42

Question 43

________ occurs in the coronal region of the developing tooth to create eruption pathway → necessary for intraosseous eruptive phase

Answer 43

Osteoclastogenesis

Question 44

Eruption Pre-Functional: Mechanisms of Action

Answer 44

Question 45

The outcome of signaling disruption on eruptive movements:

Answer 45

Tooth fails to emerge but a clear eruption pathway exists