Unit 1: The Periodontium and Microscopic Anatomy

Question 1

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

Answer 1

The periodontium

Question 2

What is included in the periodontium?

Answer 2

Gingiva
Cementum
Periodontal ligament
Alveolar bone

Question 3

Label pink

Answer 3

Gingiva

Question 4

Label orange

Answer 4

Cementum

Question 5

Label blue

Answer 5

Periodontal ligament

Question 6

Label brown

Answer 6

Alveolar bone

Question 7

Covers the cervial portions of the teeth and the alveolar process of the jaw

Answer 7

Gingiva

Question 8

Thin layer of tissue covering the root

Answer 8

Cementum

Question 9

Fibers that surround the root of the tooth, attach to the bone of the socket and cementum

Answer 9

Periodontal ligament

Question 10

Surrounds the root giving it support and protection

Answer 10

Alveolar bone

Question 11

Divisions of the gingiva

Answer 11

Free gingiva
Attached gingiva
Interdental gingiva
Gingival sulcus

Question 12

Label 1

Answer 12

Free gingival line

Question 13

Label 2

Answer 13

Muccogingival junction

Question 14

Label 3

Answer 14

Gingival margin

Question 15

Label 4

Answer 15

Free gingiva

Question 16

Label 5

Answer 16

Attached gingiva

Question 17

Label 6

Answer 17

Alveolar mucosa

Question 18

What type of gingiva is unattached?

Answer 18

Free gingiva

Question 19

What type of gingiva is tightly connected to the cementum on the cervical-third of the root and to the periosteum of the alveolar bone?

Answer 19

Attached gingiva

Question 20

Where is the attached gingiva widest?

Answer 20

Insicor and molar region

Question 21

Where is the attached gingiva narrowest?

Answer 21

Premolar region

Question 22

Is the attached gingiva sometimes stippled even in healthy gums?

Answer 22

Yes

Question 23

Does the attached gingiva vary in colour/pigmentation?

Answer 23

Yes

Question 24

Colour of healthy gingiva?

Answer 24

Pink

Question 25

Contour of healthy gingiva?

Answer 25

Marginal, meets at the tooth, slightly rounded Papilla are pointed, filled the space between the teeth

Question 26

Consistancy of healthy gingiva?

Answer 26

Firm

Question 27

Texture of healthy gingiva?

Answer 27

Smooth and/or stippled

Question 28

Margins of healthy gingiva?

Answer 28

Slightly coronal to the CEJ

Question 29

Bleeding index of healthy gingiva?

Answer 29

No bleeding on probing

Question 30

What fills the embrausers between teeth and includes a facial and lingual papillae and COL?

Answer 30

Interdental gingiva

Question 31

What is the valley-like depression/concavity in the interdental gingiva that lies apical to the contact area of two adjacent teeth?

Answer 31

COL

Question 32

What is the clinically normal measurement for the gingival sulcus?

Answer 32

1-3mm

Question 33

What is the layer of connective tissue covering the root, attaching it to the bone of the tooth socket?

Answer 33

Periodontal ligament

Question 34

What does the periodontal ligament do?

Answer 34

Supports the tooth and absorbs mechanical load

Question 35

Tissues of the periodontal ligament contain:

Answer 35

Fibroblasts Cementoblasts Osteoblasts

Question 36

What does cementum do?

Answer 36

Protects the root from resorption during ortho Gives attachment to the periodontal ligament Protects the dentin and seals the end of the dentinal tubules

Question 37

What is the term for excessive cementum being deposited in the apical third of the root?

Answer 37

Hypercementosis

Question 38

Label 1

Answer 38

Alveolar bone proper

Question 39

Label 2

Answer 39

Cortical bone

Question 40

Label 3

Answer 40

Cancellous bone

Question 41

What does alveolar bone proper do?

Answer 41

Lines the tooth socket

Question 42

What does cortical bone do?

Answer 42

Forms the wall of the maxilla and mandible

Question 43

What does cancellous bone do?

Answer 43

Fills the interior portion of the alveolar process

Question 44

Innervation of the maxillary alveolar gingiva

Answer 44

Superior alveolar nerves Infraorbital Greater palatine Nasopalatine

Question 45

Innervation of the mandibular alveolar gingiva

Answer 45

Mental Buccal Supralingual branch of the lingual nerve

Question 46

Innervation of the maxillary teeth and periodontal ligaments

Answer 46

Superior alveolar

Question 47

Innervation of the mandibular teeth and periodontal ligaments

Answer 47

Inferior alveolar

Question 48

Lymphatic system: submandibular nodes drain the

Answer 48

Periodontal tissues

Question 49

Lymphatic system: deep cervial nodes drain the

Answer 49

Palatal gingiva of the maxilla

Question 50

Lymphatic system: submental nodes drain the

Answer 50

Gingiva in the region of the mandibular incisors

Question 51

Lymphatic system: jugulodiagastric nodes drain the gingiva in the

Answer 51

3rd molar region

Question 52

What tissue makes up the outer surface of the body and lines body cavities?

Answer 52

Epithelial tissue

Question 53

What tissue filles spaces between tissues and organs?

Answer 53

Connective tissue

Question 54

What is the extracellular matrix of the epithelial tissue?

Answer 54

Basal lamina

Question 55

Layers of epithelial tissue

Answer 55

Outermost layer - keratinized Inner layers - non-keratinized Basal cells Basal lamina

Question 56

What are epithelial cells that attach to one another by special cell junctions increasing strength of the tissue?

Answer 56

Cell junctions

Question 57

What is an epithelial cell to cell connection calls?

Answer 57

Desmosome

Question 58

What is epithelial cell to basal lamina junction called?

Answer 58

Hemidesmosome

Question 59

Hemidesmosomes attach

Answer 59

Internal basal lamina to enamel surface External basal lamina to connective tissue

Question 60

These epithelial cells join the gingiva to the surface at the base of the suclus

Answer 60

Junctional epithelium

Question 61

Label 1

Answer 61

Sucular epithelium

Question 62

Label 2

Answer 62

Junctional epithelium

Question 63

Label 3

Answer 63

Oral epithelium

Question 64

Does healthy junctional epithelium have a smooth surface with the connective tissue?

Answer 64

Yes

Question 65

The ends of the periodontal ligament fibers that are emedded in the alveolar bone and the cementum are known as

Answer 65

Sharpey's Fibers