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Flashcards in Exam 1 Study Guide Deck (60):
1

Tissues of the periodontium include

1.) Gingiva
2.) Cementum
3.) PDL
4.) Alveolar Bone.

2

Periodontium

the functional system of tissues that surrounds the teeth and attaches them to the bone

3

Gingiva

Provides a tissue seal around the cervical portion of the teeth and holds tissue against tooth

4

Gingiva is comprised of

A thin outer layer of epithelium and an underlying core of connective tissue

5

Gingivitis

A type of Periodontal disease characterized by changes in color, contour and consistency of the gingival tissue.

6

Clinical picture of gingivitis

Red (Erythematous), swollen with bleeding likely.

7

Gingival pocket

PDL and Alveolar bone are still intact. Supragingival fibers are destroyed.

8

Gingivits is observed clinically from

4-14 days

9

Tissue damage is irreversible in

Periodontitis

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Tissue damage is reversible in

Gingivitis

11

A bacterial infection that is confined to the gingiva

Gingivitis

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A bacterial infection that includes all parts of the periodontium

Periodontitis

13

Periodontal disease

A bacterial infection of the periodontium. ((Can include all parts of just the gingiva))
-- Not to be confused with periodontitis

14

2 types of periodontal disease

1.)Gingivitis
2.)Periodontitis

15

Extracellular Matrix

A gel-like substance containing interwoven protein fibers that surrounds most cells.
--Is mesh like.

16

5 Functions of the PDL

1.) Supportive
2.) Sensory
3.)Nutritive
4.)Formative
5.)Resorptive

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Tissue that has plentiful cells that are connected to one another by desmosomes

The Junctional Epithelium

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Supportive Function of PDL

Provides cushion for Occlusal Forces and attaches tooth to the socket

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Sensory Function of PDL

transmits tactile pressure and pain sensations

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Nutritive Function of PDL

Has blood vessels that provide nutrients to cementum and bone

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Formative Function of PDL

Has cementoblasts producing Cementum throughout life of tooth

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Resorptive Function of PDL

has osteoclasts that can resorb bone and cementum

23

Without the PDL the tooth

would fall out of the socket and be lost

24

Cementum can be damaged by

Scaling

25

Another name for the tooth socket

Alveolar Bone Proper

26

Sharpey Fibers are

the ends of PDL fibers that are embedded in the cementum and alveolar bone

27

The nerve supply to the periodontium comes from

Trigeminal Nerve (CNV)
-2nd branch-Maxillary
-3rd branch-Mandibular

28

Microscopically, a healthy periodontium will have whattype of appearance?

Smooth

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Connects 2 cells together

Desmisome

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Connects a cell to the basil lamina

Hemidesmisome

31

Fibers that circle the tooth in a ringlike matter are?

Circular fibers

32

How are sharpeys fibers embedded into the tissue

As Cementum forms it hardens around one end of the sharpey fibers and As alveolar bone forms it surrounds on the opposite side.

33

A tissue that has no blood vessels or nerves and does not regenerate once it is destroyed

Cementum

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Pathogenesis

Development of a disease

35

The most common type of bone loss is

Horiztonal

36

The extracellular Matrix helps

hold cells together and provides a framework so that cells can migrate and interact with one another

37

Horizontal bone loss

Results in fairly even, overall reduction in the height of the bone

38

Verticle bone loss

Results in an uneven reduction in bone height, more rapid progression of bone loss next to the root surface
*Leaves a trenchlike area of missing bone alongside the root

39

Vertical bone loss results in

Infrabony pockets

40

Pseudopockets

Gingival pockets involving no destruction of the PDL fibers or alveolar bone

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Aatachment loss

the destruction of the fibers and alveolar bone that support the teeth

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Disease site

An area of tissue destruction (can involve 1 or all surfaces of the tooth)

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Active disease site

disease site that shows continued apical migration of the Junctional Epithelium over time.
-EX: A pocket read 5MM 3 months ago but today it read 6MM

44

Inactive disease site

stable disease site that attachment level of junctional epithelium remains the same over a period of time

45

Aggressive Periodontitis

Formerly known as early onset periodontitis

46

3 types of Periodontitis

Agressive, Chronic and less common types.

47

most lymph of the periodontium drains t?

the head and neck

48

Lymphnodes of the head and neck include

Submental nodes, Submandibular nodes, Deep cervical nodes and Jugulodigastric nodes.

49

Epithelial tissue

Makes up outer surface of the body and lines cavities of body.
*Characterized by plentiful cells and sparse Extrcellular matrix

50

Connective Tissue

Fills spaces between tissues and organs .
*Characterized by Few cells and abundance of Extracellular Matrix

51

How thick is the Junctional epithelium

15-30 Cells thick and Coronal Zone
4-5 Cells thick at the Apical zone

52

Junctional epithelium forms

the base of the sulcus and joins the gingiva to the tooth surface.

53

A localized collection of pus within the tissues of the periodontium

Periodontal abscess

54

Clinical signs of periodontal abscess

Circumscribed, localized swelling. Possible increase in tooth mobility. Fistula possible.
*tooth usually has vital pulp*

55

Periodontitis associated with endodontic Lesions

A tooth that has an abscess that is causing death to the tissues around the tooth (the periodontium)

56

Cancellous Bone

Spongy, lattice like bone filler between the cortical bone and the alveolar bone proper

57

what is the function of cancellous bone

Oriented around the tooth to form support for the alveolar bone proper.

58

Cortical bone

hard, outer layer of bone on the F and L surfaces of the jaw.

59

Cell junctions

cellular structures that mechanically attach cell to cell or cell to basil lamina

60

2 types of cell junctions

1.) Desmisomes
2.) Hemidesmisomes