Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

AU 15- Periodontology > Anatomy of the Periodontium > Flashcards

Anatomy of the Periodontium Flashcards

1
Q

What four parts make up the periodontium?

A
  1. Gingiva
  2. Periodontal Ligament
  3. Root Cementum
  4. Alveolar Bone (ABP)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cementum is connected to PDL through _________.

A

Sharpey’s Fibers

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

The alveolar bone proper has two plates: the inner plate is on the ____side, the outer plate is on the ____ side.

A

inner: PDL-side
outer: gingival-side

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

What are the two main functions of the PDL?

A
  1. attach the tooth to bony tissue of the jaw

2. Maintain integrity of masticatory mucosa

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

When does the periodontium begin development and from where do cells originate?

A 
Early in embryonic phase
neural crest (neural tube)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Neural crest cells will migrate into the _____ branchial arch and form _______ beneath the stomadeal epithelium.

A

first

ectomesenchyme

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

What are the three forms of the dental lamina?

A

Bud, Cap, Bell

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

Ectomesenchyme condenses around the dental organ to form the dental papilla which will give rise to _____ and _____.

A

Dentin and Pulp (dental papilla!)

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

What does the dental follicle give rise to?

A

Periodontium (dental follicle!)

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

Dental Papilla determines the _____ of the tooth; whereas, dental follicle determines the _______.

A

shape

periodontium/root

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

The outer and inner enamel epithelium proliferate apically and form ______.

A

Hertwig’s Epithelial Root Sheath

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

Which forms first, cementum or dentin?

A

Dentin is first

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

When does cementum production begin?

A

The root sheath breaks down and forms fenestrations, ectomesenchymal cells of the follicle contact the root surface and induces the differentiation of these cells into cementoblasts.

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

Inner cells of the root sheath secrete enamel-related proteins known as _______.

A

Amelogenins

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

________ induces differentiation of ectomesenchymal cells into cementoblasts.

A

Amelogenin

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

Periodontal ligament is formed by ________ that are differentiated from dental follicle _____ to the cementum.

A

Fibroblasts

lateral

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

_______ differentiate from dental follicle ectomesenchymal cells (ABP).

A

Osteoblasts

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

How long after eruption does the root complete its formation?

A

3 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

True or False: Ectomesenchymal cells remain in mature periodontium.

A

True; ectomesenchymal cells participate in turnover

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Definition: Part of the masticatory mucosa which covers the alveolar process and surrounds the cervical portion of the teeth.

A

Gingiva

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What are the three parts of gingiva?

A

Free Gingiva
Attached Gingiva
Interdental Papilla

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

True or False: The free gingival groove can always be found in a patient where the free and attached gingiva meet.

A

False: although that is the location, it is not always visible in the mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Maxillary and mandibular differences in gingival appearance include stippling in ________ and thinness in _______.

A

maxillary

mandibular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Describe the boundaries of free gingiva.

A

Free gingiva is between the free gingival margin and free gingival groove (FGM–>FGG)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Free gingiva is made up of ________epithelium.

A

keratinized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

________ is the coronal end of gingiva and is located 1.5-2.0 mm coronal to the CEJ.

A

Free gingival margin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

The _____ corresponds to the CEJ in health, whereas the _____ is coronal to the CEJ in health.

A

Free Gingival Groove at the CEJ

Free Gingival Margin coronal to CEJ

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Gingival epithelium is made of what three subcategories?

A

Oral Epithelium
Sulcular Epithelium
Junctional Epithelium

29
Q

_____ epithelium faces the oral cavity; _______ epithelium faces the tooth surface (without contacting it).

A

Oral

Sulcular

30
Q

______ epithelium provides contact between gingiva and the tooth (marks transition between free and attached)

A

Junctional

31
Q

During a gingivectomy, which part of the gingiva is removed? Can it regenerate?

A 
Oral Sulcular (OSE)
yes
32
Q

On a microscopic level, free gingiva spans from ____ to _____.

A

Free Gingival Margin to Junctional Epithelium

33
Q

Name three characteristics of attached gingiva.

A
  1. Firm texture
  2. Coral Pink
  3. Immobile
34
Q

True or False: the width of attached gingiva increases with age.

A

True (passive eruption)

35
Q

Lingually, the attached gingiva of the mandible is narrowest in the ______ region and widest in the _____ region.

A

Incisor

Molar

36
Q

Bucally, the attached gingiva is narrowest in the _____ region and widest in the _____ region.

A

premolar

incisors

37
Q

Definition: the junction between attached gingiva and alveolar mucosa.

A

Mucogingival Junction (MGJ)

38
Q

True or False: There is no mucogingival junction in the palate.

39
Q

Why is there no mucogingival junction in the hard palate?

A

MGJ marks a change between keratinized to unkeratinized epithelium. The hard palate is ALL keratinized

40
Q

What are four functions of the attached gingiva?

A
  1. Withstand friction
  2. Provide thick connective tissue
  3. Support MG
  4. Prevent inflammation via width and thickness
41
Q

True or False: 60% of adults have stippling of maxillary gingiva.

A

False: only 40% (regardless of health)

42
Q

Another name for marginal gingiva is ______.

43
Q

Keratinized gingiva minus marginal gingiva =

A

attached gingiva

44
Q

The contact relationships between adjacent teeth, the width of proximal tooth surfaces, and the course of the CEJ will determine the shape of the _______.

A

interdental papilla (IP)

45
Q

True or False: Interdental papilla only exist if teeth are present on both sides.

46
Q

The concavity seen in contact areas of premolar and molar regions is know as _____.

47
Q

The col/interdental papilla is ______ epithelium.

A

nonkeratinized

48
Q

At what age will the bottom of the gingival sulcus of a healthy mouth be found apical to the CEJ?

49
Q

Molars have ______ interdental papilla than premolars.

50
Q

Which teeth are at highest risk for periodontal diseases?

A

Molars, because they have the largest interdental papilla (nonkeratinized)

51
Q

What are three qualities of oral epithelium?

A
  1. keratinized
  2. stratified
  3. squamous
52
Q

Squamous epithelium of the oral cavity are also called ________.

A

keratinocytes

53
Q

What are the four layers of oral epithelium from inside (connective tissue side) to outside?

A

Basal Layer
Prickle Cell Layer (spinosum)
Granular Cell Layer (granulosum)
Keratinized Cell Layer (corneum)

54
Q

The keratinized cell layer may be either orthokeratinized or parakertinized; what is the difference?

A

ortho- no nucleus

para- nuclear remnants

55
Q

From the basal layer (innermost) to the granular cell layer, the number of desmosomes _____.

56
Q

From the basal layer (innermost) to the granular cell layer, the number of organelles _____.

57
Q

From the basal layer (innermost) to the granular cell layer, the number of cytoplasmic tonofilaments _______.

58
Q

90% of the cells of the oral epithelium are _____.

A

keratinocytes

59
Q

What type of cells synthesize pigment?

A

melanocytes

60
Q

What type of defense cells are most numerous in the oral epithelium?

A

Langerhans

61
Q

What type of sensory cells are prevelent in the oral epithelium?

A

Merkel’s Cells

62
Q

Where is the basement membrane?

A

between the basal layer of the oral epithelium and the underlying connective tissue

63
Q

The basement membrane of oral epithelium is ____ thick, rich in _____, and contains _______ complexes.

A

1-2 micrometers thick
rich in glycoproteins
contains protein-polysaccharide complexes

64
Q

What are the two layers of the basement membrane?

A 
Lamina Lucida (next to basal layer)
Lamina Densa (next to CT)
65
Q

How is epithelium connected to the basement membrane?

A

Hemidesmosomes (two cells connect hemidesmosomes to form a desmosome)

66
Q

Which biotype of epithelium will show greater signs of stippling?

67
Q

Stippling is caused by the fusion of _______.

A

rete pegs (epithelial ridges)

68
Q

Rete pegs intertwine with _________.

A

Connective tissue papillae

AU 15- Periodontology (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions