Peridontium: The Tooth Supporting Structures

Question 1

Peri =

Answer 1

Around

Question 2

Odontos =

Answer 2

Tooth

Question 3

Tissues of the periodontium

Answer 3

1. Cementum
2. Alveolar bone
3. Periodontal ligament
4. Gingiva

Question 4

_________ is located coronal to CEJ of each tooth.

Answer 4

Gingiva

Question 5

Function: protects underlying tooth-supporting structures of periodontium from oral environment

Answer 5

Gingiva

Question 6

________ is a shallow linear depression
separating free and attached gingiva

Answer 6

Free gingival groove

Question 7

_________ is where the pink attached gingiva
meets the red alveolar mucosa

Answer 7

Mucogingival junction

Question 8

4 anatomical areas of gingiva

Answer 8

1. Free Gingiva
2. Attached Gingiva
3. Interdental Gingiva
4. Gingival Sulcus

Question 9

Unattached portion that surrounds a tooth in the region of the CEJ

Answer 9

Free Gingiva

Question 10

The free gingiva is attached to the tooth by

Answer 10

The junctional epithelium

Question 11

The part of the gingiva that is tightly bound to the underlying cementum

Answer 11

Attached gingiva

Question 12

What is the color of healthy attached gingiva

Answer 12

Pale or light coral pink

Question 13

Healthy gingiva may have a _______ appearance, like an orange peel.

Answer 13

Stipple

Question 14

What is the purpose of the attached gingiva?

Answer 14

Allows tissue to withstand forces during chewing, speaking, and toothbrushing.

Question 15

Portion of gingiva that fills the space
(embrasure) between 2 adjacent teeth.

Answer 15

Interdental gingiva

Question 16

What is the purpose of interdental gingiva?

Answer 16

The interdental gingiva prevents food from
becoming packed between teeth during chewing.

Question 17

Interdental gingiva consists of what 2 interdental papillae:

Answer 17

1. Lingual papillae
2. Facial papillae

Question 18

_______is a valley-like depression apical to the
contact area of 2 adjacent teeth that connect facial and lingual papillae.

Answer 18

Gingival Col

Question 19

T/F: The col will be present if there is a large space between 2 teeth or there is a notable gingival recession

Answer 19

False.
The col will not be present if there is a large space between 2 teeth or there is a notable gingival recession

Question 20

The V-shaped shallow space between free gingiva and tooth surface.

Answer 20

Gingival Sulcus

Question 21

Measured by a periodontal probe, a healthy sulcus measures

Answer 21

1-3mm

Question 22

________seeps from underlying connective tissue into the sulcular space.

Answer 22

Gingival cervicular fluid

Question 23

What is PDL

Answer 23

Periodontal ligament

Question 24

Layer of connective tissue that covers the
root of the tooth and attaches it to the bone
of the tooth socket.

Answer 24

PDL - Periodontal ligament

Question 25

5 functions of the periodontal ligament

Answer 25

1. **Supportive**: to maintain tooth in socket. 2. **Sensory**: provides feelings like pressure and pain. 3. **Nutritive**: by providing nutrients to cementum and bone. 4. **Formative**: by providing cementoblasts and osteoblasts. 5. **Remodeling**: of alveolar bone in response to pressure.

Question 26

Thin layer of hard, mineralized connective tissue that covers the surface of the root.

Answer 26

Root cementum

Question 27

Primary function is for periodontal ligament attachment

Answer 27

Root cementum

Question 28

_________ are the terminal endings of periodontal ligaments attached to cementum.

Answer 28

Sharpey's fibers

Question 29

Excessive deposition of cementum on the tooth roots.

Answer 29

hypercementosis

Question 30

Mineralized connective tissue that forms bones of the upper and lower jaw to support roots of teeth Forms bony sockets that provide support to roots of teeth.

Answer 30

Alveolar bone

Question 31

The alveolar bone is comprised of 3 layers of hard tissue covered by a layer of connective tissue:

Answer 31

1. Alveolar bone proper 2. Cortical Bone 3. Cancellous bone

Question 32

________ is the bony socket that houses the tooth.

Answer 32

Alveolus

Question 33

_________ (holes) allow blood vessels to connect cancellous bone to periodontal ligament

Answer 33

Foramina

Question 34

Answer 34

Alveolar bone proper

Question 35

T/F: Sharpey’s fibers are embedded in alveolar bone proper.

Answer 35

True

Question 36

________ is a layer of compact bone that forms the outer wall on facial and lingual surfaces

Answer 36

Cortical bone

Question 37

(aka spongy bone)

Answer 37

Cancellous bone

Question 38

(aka spongy bone) that fills the interior portion of the alveolar process and is found mostly in the interproximal areas

Answer 38

Cancellous bone

Question 39

Periosteum

Answer 39

is a layer of connective tissue that covers the outer surface of bone.