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Flashcards in Exam 1 Deck (73):
1

Name the 4 tissues of the Periodontium

Gingiva
Cementum
PDL
Alveolar Bone

2

Functions of the PDL?

1. Supportive; Maintains tooth in socket.
2. Sensory; feeling of pressure & pain
3. Nutritive; provides nutrients to cementum & bone
4. Formative; builds & maintains cementum & alveolar bone of tooth socket.
5. Resorptive; remodel bone in response to pressure.

3

Spongy, latticelike bone filter between the cortical bone and the alveolar bone proper. Oriented around the tooth to form support for the alveolar bone proper?

Cancellous Bone

4

Another name for tooth socket?

Alveolus

5

Small bean shaped structures located on either side of the head, neck, armpits, and groin. They filter out and trap bacteria, fungi, viruses, and other unwanted substances to safely eliminate them from the body?

Lymph Nodes

6

T/F The lymph from the periodontal tissues is drained to the lymph nodes of the head and neck

True

7

Submandibular lymph nodes drain most of the?

Periodontal Tissues

8

Depp Cervical lymph nodes drain the?

palatal gingiva of the maxilla

9

Submental lymph nodes drain the?

gingiva in the region of the mandibular incisors

10

Jugulodigastric lymph nodes drain the?

gingiva in the third molar region

11

Which nerve supplies the periodontium?

Trigeminal Nerve

12

Which branch of the Trigeminal Nerve supplies the maxilla?

the second branch

13

Which branch of the Trigeminal Nerve supplies the Mandible?

the third branch

14

T/F Cementum does not have its own blood or nutrient supply; it receives its nutrients from the PDL

True

15

What is the primary function of the Cementum?

to give attachment to the collagen fibers of the PDL

16

The end of the PDL fibers that are embedded in the cementum and alveolar one are known as the?

Sharpey Fibers

17

A specialized cell junction that connects two neighbors epithelial cells and their cytoskeletons together?

Desmosome

18

A specialized cell junction that connects the epithelial cells to the basal lamina?

Hemidesmosome

19

Functions of the JE?

Attachment and barrier. Provides an attachment between the gingiva and tooth surface providing a seal at the base of the sulcus or pocket. Acts as a barrier between the plaque biofilm and CT of the periodontium

20

The specialized epithelium that forms the base of the sulcus and joins the gingiva to the tooth surface?

Junctional Epithelium

21

Where is the JE located?

slightly coronal to the cementoenamel junction (CEJ)

22

The sequence of events that occur during the development of a disease or abnormal condition

Pathogenesis (Disease Progression)

23

The pathologic deepening of the gingival sulcus is?

Apical Migration

24

Contiuned apical migration of the JE is?

Site of active disease

25

Increased probing depth of a ginival pocket is the result of which of the following?

Enlarged tissue

26

What type of bone resorption occurs in an uneven oblique affecting only one tooth?

Infrabony defect

27

Most common type of bone loss?

Horizontal Bone Loss

28

Bone loss that is an uneven reduction in the height of the alveolar bone.

Vertical Bone Loss

29

Bone Loss, also known as angular bone loss?

Vertical bone loss

30

A disease site that shows continued apical migration of the junctional epithelium over time?

Active disease site

31

A disease site that is stable, with the attachment level of the JE remaining at the same level for a period of time?

Inactive disease site

32

An area of tissue destruction . May involve only one surface of the tooth, such as the distal surface, or several surfaces, or all four surfaces of the tooth?

A disease site

33

Occurs when there is horizontal boss loss?

Suprabony

34

Occurs when there is vertical bone loss?

Infrabony

35

A mesh-like material that surrounds the cells. It is like scaffolding for the cells.

Extracelluar Matrix

36

What does extracellular matrix do?

helps hold cells together and provides a framework within where cells can migrate and interact w/ one another

37

Probing depth in sulcus for healthy tissues?

1-3mm

38

Sulcus probing depth in gingivitis?

May be greater than 3 mm due to swelling of the tissues

39

Pocket depth in periodontitis?

4 mm or greater
May be pus evident on probing

40

What separates the epithelium from the connective tissue?

Wavy Tissue Boundary

41

T/F the epithelium does not have its own blood supply; blood vessels are carried close to the epithelium in the connective tissue papillae

True

42

Fibers that encircle the tooth in a ring-like manner coronal to the alveolar crest and are not attached to the cementum?

Circular fiber

43

Abscess of the periodontium?

Gingival abscess
Periodontal abscess
Pericoronal abscess

44

Changes in color, contour, and consistency of the gingival tissues?

Gingivitis

45

A gingivitis that lasts for a short period of time. Usually characterized by fluid in the gingiva connective tissues that result in swollen gingiva

Acute gingivitis

46

A gingivitis that lasts for months or years. Gingival tissues are enlarged and fibrotic (leathery) in consistency

Chronic Gingivitis

47

Clinical signs of gingivitis?

Red
Swollen
Bleeding likely

48

Clinical signs of periodontitis

Pink or purplish
Swollen or fibrotic
Bleeding

49

A thin mat of extra cellular matrix secreted by the epithelial cells

Basal lamina

50

Have nuclei and acts as a cushion against mechanical stress and wear?

Nonkeratinized epithelial cells

51

Have no nuclei and form a tough, resistant layer on the surface of the skin ?

Keratinization epithelial cells

52

A cell to cell connection ?

Desmosome

53

A cel to basal lamina connection?

Hemidesomoe

54

T/F the interdental gingiva prevents food from becoming packed between the teeth during mastication

True

55

T/F the col is not present if the adjacent teeth are not in contact.

True

56

Located between the facial and lingual papillae and extends beneath the contact area of the two adjacent teeth?

Col

57

A layer of soft connective tissue that covers the root of the tooth and attaches it to the bone of the tooth socket?

PDL

58

A thin layer of hard, mineralized connective tissue that covers the surface of the tooth root?

Cementum

59

Composed of a thin outer layer of epithelium and an underlying core of connective tissue?

The gingiva

60

A layer of compact bone that forms the hard, outside wall of the mandible ad maxilla on the facial and lingual aspects?

Cortical bone

61

T/F The cortical bone is think in the incisor, canine, and premolars regions; cortical bone is thicker in molar region

True

62

T/F the cortical bone will not show up in a radiograph; only the cancellous bone and the alveolar bone proper can be seen on a radiograph

True

63

T/F the motor function of the trigeminal nerve is essential for the act of chewing

True

64

Major artery for maxillary periodontal tissues?

Superior alveolar arteries

65

Major arteries for the mandibular periodontal tissues?

Inferior alveolar artery

66

Smallest structural unit of living matter capable of functioning independently?

Cells

67

Four basic types of tissues are?

Epithelial
Connective
Muscle
Nerve

68

The tissue that makes up the outer surface of the body (skin) and lines the body cavities such as the mouth, stomach, and intestines (mucosa)?

Epithelial

69

A type of epithelium that comprises flat cells arranged in several layers?

Stratified squamous epithelium

70

T/F Keratinization epithelium is found on the palms of the hands and soles of the feet while Nonkeratinized epithelial cells are found as the mucosal lining of the cheeks-mobility to speak, chew and make facial expressions

True

71

Fills the space between the tissues and organs in the body. It binds and supports other tissues?

Connective tissue

72

T/F cementum, dentin, alveolar bone and the pulp are all dental tissues that are specialized forms for connective tissue except enamel. Enamel is an epithelial tissue

True

73

T/F onset of gingivitis: is observed clinically from 4 to 14 days after plaque biofilm accumulates in sulcus

True