Perio 1 - Test 1

Front 1

Which of the following is Not one of the tissues of the periodontium?
a. Periodontal ligament
b. Body of the mandible
c. Gingiva
d. Cementum

Back 1

b. Body of the mandible

Front 2

T/F Cementum is NOT necessary to the health of the periodontium because the underlying dentin will protect the root if the cementum is removed by toothbrushing abrasion or from dental procedures?

Back 2

False

Front 3

Which tissue of the periodontium may be pigmented in dark skinned individuals?

Back 3

Attached Gingiva

Front 4

T/F: Healthy gingival tissue ALWAYS has a dimpled appearance known as stippling?

Back 4

False

Front 5

T/F One function of the attached gingiva is to prevent the free gingiva from being pulled away from the tooth when tension is applied to the alveolar mucosa?

Back 5

True

Front 6

What forms the base of the gingival sulcus?

Back 6

Junctional Epithelium

Front 7

On the tooth side, the periodontal ligament fibers are embedded in which of the following structres?

Back 7

Cementum

Front 8

T/F Cementum does not have its own blood supply; it receives its nutrients from the periodontal ligament?

Back 8

True

Front 9

Which of the following is the thin layer of bone that lines the tooth socket?

Back 9

Alveolar bone proper

Front 10

Is the functional system of tissues that surrounds the teeth and attaches them to the jaw bone?

Back 10

Periodontium

Front 11

The tissues of the periodontium include?

Back 11

Gingiva, PDL, Cementum and Alveolar bone

Front 12

The gingiva is divided into four anatomical areas which are?

Back 12

Free gingiva

Gingival sulcus

Interdental gingiva

Attached gingiva

Front 13

What is the coronal boundary of the gingiva ?

Back 13

Gingival Margin

Front 14

What is the apical boundary of the gingiva?

Back 14

Alveolar mucosa

Front 15

Function of the Attached Gingiva?

Back 15

Allows the gingival tissue to withstand the mechanical forces created during activities such as mastication, speaking, and toothbrushing

Front 16

A valley like depression in the portion of the interdental gingiva that lies directly apical to the contact area?

Back 16

Col

Front 17

T/F Little or no fluid is found in the healthy gingival sulcus, but the fluid flow increases in the presence of dental plaque biofilm and the resulting gingival inflammation.

Back 17

True

Front 18

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

Back 18

PDL

Front 19

What type of tissue is the PDL composed of?

Back 19

Mainly of dense fiberous connective tissue

Front 20

What are the five functions of the PDL?

Back 20

1)Supportive function

2)Sensory function; pressure and pain

3)Nutritive function; provides nutrients to the cementum and bone

4)Formative function

5)Resorption function

Front 21

There are two main types of cementum, which are?

Back 21

Acellular and Cellular

Front 22

What is the thin layer of bone that lines the socket to surround the root of the tooth?

Back 22

Alveolar bone proper ( or cribriform plate)

Front 23

What is a layer of compact bone that forms the hard, outside wall of the mandible and maxilla on the facial and lingual aspect; surrounds the alveolar bone proper and gives support to the socket?

Back 23

Cortical bone

Front 24

What is the most coronal portion of the alveolar process?

Back 24

Alveolar Crest

Front 25

In health, the alveolar crest is located ___ to ___ mm apical to the CEJ of the teeth

Back 25

1-2mm

Front 26

What is the latticelike bone that fills the interior portion of the alveolar process ?

Back 26

Cancellous Bone

Front 27

Is oriented around the tooth to form support for the alveolar bone proper?

Back 27

Cancellous Bone

Front 28

what is a layer of connective soft tissue covering the outer surface of the bone?

Back 28

Periostium

Front 29

Which of the following tissue serves as a covering tissue for the outer services of the body and a lining tissue for the body cavities such as the mouth, stomach, and intestines?

Back 29

Epithelial Tissue

Front 30

Which of the following tissue fills the spaces between the tissues and organs of the body?

Back 30

Connective Tissue

Front 31

Which of these epithelial layer is comprised of cells with nuclei that act as a cushion against mechanical stress and wear?

Back 31

Nonkeratinized Layer

Front 32

Epithelial cell junctions are cellular structures that can attach:

Back 32

An epithelial cell to a neighboring epithelial cell; an epithelial cell to a basal lamina

Front 33

The function of a cell junction is to:

Back 33

Allow cells to bind together to function as a strong structural unit.

Front 34

A cell junction that connects an epithelial basal cell to the basal lamina is termed?

Back 34

Hemidesmosome

Front 35

T/F In most places in the body, the epithelium meets the connective tissue in a wavy, uneven junction.

Back 35

True

Front 36

The deep extensions of epithelium that reach down into the connective tissue are termed:

Back 36

Epithelial Ridges

Front 37

T/F Connective tissue is comprised of a gel like substance, fibers, and few cells.

Back 37

True

Front 38

In the junctional epithelium, epithelial cell attach to neighboring epithelial via:

Back 38

Desmosomes

Front 39

The junctional epithelium attaches to the tooth surface via the:

Back 39

Hemidesmosomes and the internal basal lamina

Front 40

What is a group of interconnected cells that perform a similar function within an organism?

Back 40

Tissue

Front 41

The tissues of the body consist of ______ and __________.

Back 41

Cells and extracellular matrix

Front 42

What are the four basic types of tissue?

Back 42

Epithelial, connective, nerve, and muscle

Front 43

What is a meshlike material that surrounds the cells?

Back 43

Extracellular Matrix

Front 44

The extracellular matrix consists of ground substance and fibers; the ground substance composed of?

Back 44

A gel like material that fills the space between the cells.

Front 45

Which tissue is more plentiful of extracellular matrix than cells?

Back 45

Connective tissue

Front 46

Which tissue has less of the extracellular matrix but has more cells?

Back 46

Epithelial tissue

Front 47

The skin and mucosa of the oral cavity are made up of:

Back 47

Stratified squamous epithelium

Front 48

A portion of the gingiva that fills the area between two adjacent teeth APICAL to the contact area?

Back 48

Interdental Gingiva

Front 49

In epithelial tissue, the thin mat of extracellular tissue is termed?

Back 49

Basal Lamina

Front 50

Form a tough, resistant layer on the surface of the skin; have no nuclei?

Back 50

Keratinized epithelial cells

Front 51

Which tissue contain no blood vessels, nourishment is received from blood vessels contained in the underlying connective tiisue?

Back 51

Epithelial tissue

Front 52

What holds the epithelial tissue together?

Back 52

Cell junctions

Front 53

How do epithelial and connective tissue meet?

Back 53

Tissue boundary either a wavy or a smooth boundary

Front 54

The epithelial cells of the junctional epithelium are connected by?

Back 54

Desmosomes

Front 55

What is the function of the Junctional epithelium?

Back 55

The JE attaches the gingiva to the enamel and/or the cementum of the tooth.

Front 56

The extracellular martix of the JE consists of an ____ and ____ basal lamina.

Back 56

Internal and external

Front 57

What are the principle fiber groups of the PDL?

Back 57

Alveolar crest fibers group, Horiztonal, Oblique, Apical, Interradicular

Front 58

This fiber group extends from the cervical cementum, running downward in a diagonal direction, to the alveolar crest. This fiber group resists Horizontal movements to the tooth.

Back 58

Alveolar crest fibers group

Front 59

Extend from the periosteum of the alveolar crest into the gingiva connective tissue. ( Part of the supragingival fiber bundles)

Back 59

Alveologingival fibers

Front 60

These fiber bundles attach the gingiva to the bone. ( Part of the supragingival fiber bundles)

Back 60

Alveologingival fibers

Front 61

Encircle the tooth in a ringlike manner coronal to the alveolar crest and are not attached to the cementum of the tooth.( Part of the supragingival fiber bundles)

Back 61

Circular fibers

Front 62

These fiber bundles connect adjacent teeth to one another..( Part of the supragingival fiber bundles)

Back 62

Circular fibers

Front 63

These fibers act to attach the gingiva to the teeth?

Back 63

Dentogingival fibers

Front 64

Extend laterally from the periosteum of the alveolar bone. These fibers attach the gingiva to the bone.

Back 64

Periostogingival fibers

Front 65

Extend in a mesiodistal direction along the entire dental arch and around the last molars in the arch, These fiber bundles link adjacent teeth into a dental arch unit?

Back 65

Intergingival fibers

Front 66

Encircle several teeth. These fiber groups link adjacent teeth into a dental arch unit?

Back 66

Intercircular fibers

Front 67

Are located in the papillae coronal to (above) the transseptal fiber bundles.These fiber groups connect the oral and vestibular interdental papillae of posterior teeth?

Back 67

Interpapillary fibers

Front 68

Extend from the cementum near the CEJ and run horizontally between adjacent teeth. These fiber bundles link adjacent teeth into a dental arch unit.

Back 68

Transgingival fibers

Front 69

Located apical to the alveolar crest fibers. They extend from the cementum to the bone at right angles to the long axis of the root.This fiber group resists horizontal PRESSURE against the crown of the tooth.

Back 69

Horizontal fiber group

Front 70

Located apical to the horizontal group. They extend from the cementum to the bone, running in a diagonal direction. This fiber group risists vertical pressure that threaten to drive the root into its socket.

Back 70

Oblique fiber group

Front 71

Extend from the apex of the tooth to the bone. This fiber group secures the tooth in its socket and resists forces that might lift the tooth out of the socket.

Back 71

Apical fiber group

Front 72

Present only in multirooted teeth, extend from the cementum in the furcation area of the tooth to the interradicular septum of the alveolar bone. These fiber groups help stabilize the tooth in its socket.

Back 72

Interradicular fiber group

Front 73

The ends of the PDL fibers that are embedded in the cementum and alveolar bone are known as ?

Back 73

Sharpey's fibers

Front 74

When one of two adjacent teeth
is tilted or erupted
to a different height than its neighboring tooth, the crest of the interproximal bone will have a ____________ crest contour.

Back 74

Angular

Front 75

The alveolar bone proper is the thin layer of dense bone that lines a normal tooth socket. On
a radiograph, the alveolar bone
proper is identified as the:

Back 75

Lamina Dura

Front 76

On a radiograph, widening of the periodontal ligament space is an indication of

Back 76

Tooth mobility