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Periodontics 1 > The Normal Periodontium > Flashcards

The Normal Periodontium Flashcards

1
Q

Masticatory Mucosa (Type & Location)

A
  • Keratinized stratified squamous epithelium

- Hard palate, attached gingiva, dorsum of tongue

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2
Q

Lining Mucosa (Type & Location)

A
  • Non-keratinized stratified squamous epithelium

- Buccal mucosa (cheeks), Labial mucosa (lips)

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3
Q

Specialized Mucosa (Location)

A
  • dorsum of tongue, taste buds
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4
Q

Where are rete peges located?

A

Masticatory epithelium (palate, attached gingiva)

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5
Q

Layers of gingival epithelium? (superficial -> deep)

A

Corneum, granulosum, spinosum, basale

- Coneum is constantly being shed

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6
Q

How does the epithelium/connective tissue interface?

A

Connective tissue projects into epithelium

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7
Q

Layers of basement membrane?

A 
Basal Lamina
  - Lamina lucida
  - Lamina Densa (Collagen 4-- MOST COMMON)
Attaching Proteins (Collagen 7)
Lamina Reticularis (Collagen 3)
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8
Q

Hemidesomosomes connect what to what?

A

Epithelium to basement membrane (Lamina lucica, lamina densa)

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9
Q

Where do melanocytes reside?

A

Basal epithelia layer – (basement membrane)

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10
Q

Where are langerhan cells located?

A

Among keratinocytes… gingival epithelium

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11
Q

What is the gingiva comprised of?

A

Attached gingiva
Unattached gingiva
Interdental ginigiva

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12
Q

T/F Surround bone of the alveolar process is considered periodontium?

A

False, the bone surrounding the alveolar bone is not apart of the periodontium

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13
Q

Functions of perioduntium?

A 
Defend
Resist
Attach
Maintain
Adjust
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14
Q

What features are found in the gingival epithelium?

A 
keratinocytes
Desmosomes
Tonofilaments 
           - keratin intermediate filaments in desmosomes
Basal lamina
Hemidesmosomes
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15
Q

Anatomy of the gingiva includes? (FISA)

A

Free gingiva
Interdental gingiva
Sulcus
Attached gingiva

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16
Q

What lies between the free gingiva and the attached gingiva?

A

Marginal Groove

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17
Q

What lies between the attached gingiva and the alveolar mucosa?

A

Mucogingival junction

18
Q

What are the gingival boundaries?

A

Upper edge – gingival margin

Lower edge – alveolar mucosa

19
Q

What part of the gingiva is most prone to inflammation?

A

Free gingiva

20
Q

Sulcus depth that is healthy?

A

Less than or equal to 3mm

21
Q

What type of tissue makes up the free gingiva (buccally or lingually)?

A

Keratinized stratified squamous epithelium

22
Q

What is the base of the sulcus formed by?

A

Junctional Epthelium

23
Q

The walls of the sulcus are made of what tissue type?

A

non-keratinized (Semipermeable)

24
Q

Where should the base of the sulcus (junctional epithelium) normally be?

A

Attached to enamel

25
Q

What purposes does the gingival crevicular fluid have?

A

Cleanse sulcus
Adhesion of epithelium to tooth
Antimicrobial
Antibodies

26
Q

Where does gingival crevicular fluid come from?

A

from the CT by means of osmosis

27
Q

Cellular items in GCF?

A

bacteria
Sluffed epithelial cells
leukocytes (PMN’s, lymphocytes, monocytes)

28
Q

Electrolytes in GCF?

A

Potassium, Sodium, Calcium, Magnesium, Fluoride

- inflammation = higher Ca, and Na

29
Q

Metabolic end products from bacteria in GCF?

A 
Lactic acid
Urea
Hydroxyproline
Endotoxins
Cytokines (interleukins, TNF-alpha)
Hydrogen Sulphide
30
Q

Textured gingiva is called what?

A

Stippling

31
Q

Facial attached gingiva measurements

A 
maxillary
  - incisors - 3.5 to 4.4 mm
  - premolar - 1.9 mm
mandibular
  - 3.3 to 3.9 mm
  - 1.8 mm
32
Q

What type of tissue lines the palate?

A

attached tissue (masticatory mucosa)

33
Q

Interdental gingiva is also known as?

A

papillae

34
Q

What connects facial and lingual papillae?

A

The COL

35
Q

What is the COL?

A

Depression between facial and lingual interdental gingiva.

More susceptible to disease.

36
Q

Is the COL keratinized or non-keratinized?

A

non-keratinized

37
Q

What is the junctional epithelium continuous with?

A

sulcular epithelium

38
Q

Where is the junctional epithelium derived from?

A

REE.

REE turns into JE 3-4 years post eruption

39
Q

What is a unique histological feature to the JE?

A

2 basement membranes
- internal basal lamina (attaches to enamel –
hemidesmosomes)
- external basal lamina (attaches to CT)

40
Q

Where does the JE normally in an adult lie?

A

Close to the CEJ

41
Q

How fast does the JE turnover?

A

VERY RAPID

Periodontics 1 (3 decks)

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