Deck 11: Periodontium: Periodontal Ligament

Question 1

The width (thickness)of the periodontal ligament increases with age.

Answer 1

False

Question 2

Which gingival fiber group extends between adjacent teeth?

A) Circular
B) Transseptal
C) Free gingival
D) Attached gingival

Answer 2

Transseptal

Question 3

Which change is associated with the aging of cementum and alveolar bone?

A) Scalloping
B) Cellular hyperactivity
C) Increased cell reproduction
D) Fiber attachments cover the entire surface

Answer 3

Scalloping

Question 4

Which of the following best defines epithelial rest?

A) Diminished functional activity caused by aging
B) A decrease in the production of epithelial cells
C) A marking created by deposition of cementum
D) A mass of cells in the remnants of the root sheath

Question 5

Macrophages are normally present in the periodontal ligament.

Question 6

______________ create and destroy collagen fibers,as needed.

A) Fibroblasts
B) Osteoclasts
C) Macrophages
D) Cementoblasts

Question 7

Which of the following is found on the surface of cementum?

A) Fibroblasts
B) Cementicles
C) Cementocytes
D) Cementoblasts

Question 8

Cementum is constantly being created as new fibers appear along the root surface.

Question 9

The periodontal ligament (periodontium)has a width of _________ mm.

A) 0.015 to 0.038
B) 0.15 to 0.38
C) 0.045 to 0.080
D) 0.45 to 0.80

Question 10

The periodontal ligament is thinnest in the midroot zone.

Question 11

Which arises from the dental follicular tissue?

A) Dentin
B) Enamel
C) Cementicles
D) Periodontium

Question 12

The periodontal ligament performs which secondary function?

A) Insulating and protecting the pulp
B) Forming cementum, bone, and enamel
C) Providing a sensory supply to the cementum
D) Supplying nutrients to the cementum and alveolar bone

Question 13

Osteoclasts facilitate bone resorption in periodontal disease.

Question 14

Tooth movement will elicit the ________ of cementum.

A) necrosis
B) ingestion
C) resorption
D) absorption

Question 15

The periodontal ligament connects with the gingival tissues.

Question 16

The jaw jerk reflex is a test for which structure?

A) Pterygoid muscle
B) Trigeminal nerve
C) Periodontal ligament
D) Temporomandibular joint

Question 17

The primary function of the periodontal ligament is to do which of the following?

A) Support the teeth.
B) Provide nutrition.
C) Transmit neural input.
D) Protect the cementum.

Question 18

_______________ is (are)highly cellular,vascular,and neural.

A) Oxytalan fibers
B) Interstitial spaces
C) Periodontal ligaments
D) Fibrous connective tissue

Question 19

Which pressure receptors are found in the periodontal ligament?

A) Ruffini
B) Pacinian
C) Meissner
D) All of the above

Question 20

The periodontal ligament is composed of fibers,cells,and ___________.

A) synovial fluid
B) visceral fascia
C) crevicular fluid
D) intercellular substance

Question 21

___________ stem from monocytes within the blood vascular system.

Question 22

Name two objects in the periodontal ligament that are phagocytosed by macrophages.

Question 23

List the five dentoalveolar fibers of the periodontal ligament.

Question 24

The overall general health of an individual affects the health of the periodontium.

Question 25

Fibroblasts are most concentrated in the _______ _________.

Question 26

Epithelial rests always occur along the root surface.

Question 27

Receptors and nerves located in the periodontal ligament transmit information regarding pressure and mandibular position.

Question 28

The most important function of the periodontal ligament is to sense movement.

Question 29

Interstitial spaces contain _______ _______ and nerve trunks that maintain the vitality of the periodontal ligament (PDL).

Question 30

Cementoblasts repair resorbed cementum.

Question 31

Cemental spikes occur with excessive deposition around depleted fiber bundles.