Quiz 7

Question 0

Part of the tooth below the gingival sulcus or periodontal pocket
- part of the root to which the periodontal ligaments are attached

Answer 0

Clinical root

Question 1

Part of the tooth above the attached periodontal tissue; area of dental hygiene treatment

Answer 1

Clinical crown

Question 2

Part of the tooth covered by enamel

Answer 2

Anatomic crown

Question 3

Part of the tooth covered by cementum

Answer 3

Anatomic root

Question 4

Covers the gingiva and hard palate (areas used during the mastication of food)

Answer 4

Masticatory mucosa

• firmly attached to alveolar bone (except for free gingiva)
• epithelial covering is generally keratinized (can withstand the abrasiveness of chewing)

Question 5

Covers the inner surface of the lips and cheeks, maxillary and mandibular vestibules, alveolar ridges, floor of the mouth, soft palate

Answer 5

Lining mucosa

• non keratinized epithelium- tissue is more fragile, requires moist secretions to stay healthy
• loosely attached underlying connective tissue

Question 6

Covers dorsum of tongue

* composed of many papillae, some of which contain taste buds

Answer 6

Specialized mucosa

Question 7

The functional unit of tissues that surrounds and supports the tooth

Answer 7

The periodontium

* the periodontal ligament, cementum, and bone make up the attachment apparatus

Question 8

Fibrous connective tissue that surrounds and attaches the roots of teeth in cementum and alveolar bone

Answer 8

Periodontal ligament

Question 9

Around the cervical area within the gingival tissues

Answer 9

Gingival fiber groups

Question 10

Surrounding the root

Answer 10

Principal fiber groups

Question 11

Extend from the cementum in the cervical region into the free gingiva, give support to the gingiva **

Answer 11

Dentogingival (free gingival) fibers

Question 12

Extend from the alveolar crest into the free and attached gingiva, provide support **

Answer 12

Alveologingival (attached gingival) fibers

Question 13

Continuous around the neck of the tooth, help to maintain the tooth in position **

Answer 13

Circumferential (circular) fibers

Question 14

Extend from the cervical cementum over the alveolar crest to blend with fibers I the periosteum of the bone

Answer 14

Dentoperiosteal (alveolar crest) fibers

Question 15

Extend from the cervical area of one tooth across to an adjacent tooth (on the medial or distal only) provide resistance to separation of teeth **

Answer 15

Transseptal fibers

Question 16

From the root apex to adjacent surrounding bone to resist vertical forces

Answer 16

Apical fibers

Question 17

From the root above the apical fibers obliquely toward the occlusal to resist vertical and unexpected strong forces

Answer 17

Oblique fibers

Question 18

From the cementum in the middle of each root to adjacent alveolar bone to resist tipping of the tooth

Answer 18

Horizontal fibers

Question 19

From the alveolar crest to the cementum just below the cementoenamel junction to resist intrusive forces

Answer 19

Alveolar crest fibers

Question 20

From cementum between the roots of multi rooted teeth to the adjacent bone to resist vertical and lateral forces

Answer 20

Interradicular fibers

Question 21

Thin later of calcified connective tissue which covers the tooth from the CEJ to and around the apical foramen

Answer 21

Cementum

Question 22

Functions of cementum

Answer 22

• seals the tubules of the root dentin

- provides attachment for the periodontal fiber groups

Question 23

Characteristics of cementum

Answer 23

• thickness is 50-200 um about the apex; 30-60 um about the cervical area
• cementum is insensitive because vascular and nerve connections are missing
• relationship of enamel and cementum

**10% do not meet area of exposed dentin, in 30% they meet edge to edge, and 60% the cementum overlaps the enamel

Question 24

Supports the teeth/ provides attachment for periodontal ligament fibers

Answer 24

Alveolar bone

Question 25

Part of the Masticatory mucosa that surrounds the neck of the teeth and is attached to the teeth and alveolar bone, composed of free gingiva, attached gingiva and interdental gingiva or interdental papilla

Answer 25

Gingiva

Question 26

Gingival margin to the free gingival groove, coronal to attached gingiva

Answer 26

Free gingiva

Question 27

Depression that demarcates the end of the free gingiva, May or may not be present

Answer 27

Free gingival groove

Question 28

Most coronal portion of the free gingiva, edge of the gingiva nearest the incisal or occlusal surface, marks the opening of the gingival sulcus

Answer 28

Gingival margin

Question 29

Gingival sulcus

Answer 29

- internal aspect of the free gingiva - creates shallow groove hat separates the free gingiva from the surface of the tooth - healthy sulci are shallow and maybe be only 0.5 mm** - average depth= 1.8 mm

Question 30

Forms the floor of the gingival sulcus

Answer 30

Junctional epithelium * wedge shaped &a continuous with the sulcular epithelium * completely encircles the tooth - has 2 basement membranes: one adjacent to the connective tissue and one adjacent to the tooth surface

Question 31

Position of the junctional epithelium

Answer 31

- As tooth erupts, attachment is on enamel - During eruption- migrates toward the CEJ - full eruption- eruption is on the cementum where it becomes firmly attached

Question 32

Occupies the interproximal area between 2 adjacent tooth; also called EMBRASURE

Answer 32

Interdental gingiva (papilla)

Question 33

Depression between the lingual or palatal and the facial papillae - under the contact area; depends when gingiva enlargement occurs

Answer 33

Col

Question 34

Free gingiva to the MGJ

Answer 34

Attached gingiva | *firmly bound to the underlying cementum and alveolar bone

Question 35

Line that marks the connection between attached gingiva an alveolar mucosa

Answer 35

Mucogingival junction * * no alveolar mucosa is present on the palate - palatal tissue is firmly attached to the bone of the roof of the mouth

Question 36

Moveable tissue loosely attached to the underlying bone - smooth shiny surface with nonkeratinized, thin epithelium, extends from the MGJ into the mucolabial and mucobuccal fold

Answer 36

Alveolar mucosa

Question 37

Filled with crystals of various calcium phosphate (mineralized dental biofilm)

Answer 37

Calculus