Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Oral Histology > Ex 2- Eruption + Shedding > Flashcards

Ex 2- Eruption + Shedding Flashcards

1
Q

______ is the movements a tooth makes to attain and maintain its position in the jaw

A

Eruption

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Physiologically, a tooth will move in all directions except _______ to attain and maintain its position in the jaw.

A

apically

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Normally tooth movement occurs _______ ______

A

throughout life

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The movements of eruption are a cellular activity involving different cell types of the periodontal ligament (PDL); _____ , _______, ______ and ______

A

cementoblasts
osteoblasts
osteoclasts
fibroblasts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

________ are from bone marrow and resorb bone when teeth move w/ ortho

A

osteoclasts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

________ is the most numerous cell of the PDL, is thought to play a role in tooth movement

A

fibroblasts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Fibroblasts within the PDL _____ and ______ extracellular substance. They also may become contracting cells _____ ________

A

secrete
lyse (fibroclast)
fibromyocte myofibroblast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Fibromyocte myofibroblast is a cell that is connected to principal collagen bundles that connect the tooth to ______ _____, when it contracts the ______ ______ contract moving the _______

A

alveolar bone
collagen fibers
tooth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the three stages of eruption?

A

Preemergence
Prefunctional
Functional

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

During the preemerence stage of eruption the main direction of movement is _______

A

facially (dentin + enamel forming)

*keeping pace w/ growing jaw

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

During the prefunctional stage of eruption the main direction of movement is _________

A

occlusally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

During the functional stage of eruption the main direction of movement is ________

A

mesially

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

________ stage starts with the appearance of dental lamina and continues to the appearance of reduced enamel epithelium and Hertwig’s root sheath, just prior to start of root dentin formation

A

preemergence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

During the primary tooth germ and secondary dental lamina stages the main direction of movement is ________

A

facially

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

After enamel formation is complete 4 cell layers of enamel organ become _______ _______ ________

A

reduced enamel epithelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Cervical loop is where outer and inner layers of enamel organ come from to form ______ ______ ____ _____

A

Hertwig’s epithelial root sheath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Reduced enamel epithelium is attached to completed enamel surface by a ____ ______ the last secretion of ameloblasts

A

basal lamina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are the 2 main functions of Hertwig’s epithelial root sheath?

A
  • Determines # root canals of tooth

- Determines root dentin outline

19
Q

Bone crypts undergo remodeling and become the ______ ______

A

alveolar process

20
Q

________ stage starts with root dentin formation and ends when tooth reaches _______ plane

A

Prefunctional

occlusal

21
Q

The main direction of movement during the prefunctional stage is _______

A

occlusally

22
Q

Hertwig’s Epithelial root sheath covers root dentin and determines root dentin outline, the apical end continues as _____: determines number of ______ _____

A

diaphragm

root canals

23
Q

Reduced enamel epithelium is over ________ enamel

A

immature

24
Q

During Hertwig’s epithelial root sheath diagram stage the number of root canals are determined: the tooth erupts ____ from this level

A

occlusally

25
Q

When hertwig’s epithelial root sheath elongation he ______ ______ outline is determined and the diaphragm remains at relatively the same level

A

root dentin

26
Q

After root dentin forms ______ breaks up: ______ forms on exposed dentin. This sequence continues ______ until root dentin is completed

A

sheath
cementum
apically

27
Q

_____ ______ ___ ______ are remnants of epithelial cells from Hertwig’s root sheath in the periodontal ligament; appearing during the prefunctional stage of eruption

A

Epithelial rest of Malassez (can causes cysts to form)

28
Q

During the prefunctional stage of eruption, the merged oral epithelium and reduced enamel epithelium undergo _____ ____ because there is no blood supply. The coronal most part emerges into the _____ ____

A

cell death

oral cavity

29
Q

Reduced enamel epthelium becomes _______ _______

A

junctional epithelium

30
Q

Junctional epithelium is attached to the tooth surface by a ____ _____ (acts as a double basal lamina)

A

basal lamina

31
Q

Collagen fibers bundles of PDL are _____ functionally arranged in groups but are arranged _____

A

NOT

obliquely

32
Q

The ______ ____ of eruption starts at the occlusal plane and physiologically continues throughout life

A

functional stage

33
Q

The main movement during the functional stage of eruption is ______

A

mesially (physiologic mesial drift)

34
Q

________ _______ attachment position changes during functional eruption

A

junctional epithelium

35
Q

What are the changes to the jucntional epithelium during functional eruption?

A

-attached to enamel
-attached to enamel + cementum
-attached to cementum
(physiologic passive eruption)

36
Q

Functional arrangement of principal fiber bundles of _____ occurs during _____ stage of eruption

A

PDL

functional

37
Q

During the functional stage of eruption what 3 changes occur in dentin?

A
  • attrition
  • dead tracts
  • reparative (tertiary) dentin
38
Q

During the functional stage of eruption there is continued ______ formation, reduced _____ tissue volume and ______ mineralization

A

dentin
pulp
ectopic

39
Q

______ ______ occurs between the junctional epithelium and adjacent connective tissue (lamina propria)

A

reciprocal induction

40
Q

Dental lamina –> ______ –> cap –> bell –> _______ —> Hetwig’s sheath –> merger –>________ _______ –> occlusal plane

A

bud
apposition
junctional epithelium

41
Q

_______ is the physiologic elimination of primary teeth caused by the resorptive action of __________

A

shedding

odontoclasts

42
Q

Odontoclasts originate in ______ ______ and conveyed to the site by ______ _____

A

bone marrow

blood vessels

43
Q

Odontoclasts resorb the ___ mineralized tissues of teeth

A

3

44
Q

If reduced enamel epithelium comes in close contact w/ osteoclast cells what would occur?

A

protective reduced enamel epithelum breaks down and enamel can be damaged

Oral Histology (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions