Exam 1 A

Question 1

What are essential, but insufficient to cause PD?

Answer 1

bacteria

Question 2

What are some host factors equally important as bacteria in determining PD occurrence and severity of disease outcome?

Answer 2

heredity, environmental factors, and smoking

Question 3

Name some microbial risk factors for PD?

Answer 3

Specific microorganism, total microbial burden, biofilm pathogenicity

Question 4

Name some systemic risk factors for PD?

Answer 4

diabetes, genetic factors, sex/race, HIV

Question 5

What is the most common form of PD?

Answer 5

slight PD with moderate progression (81%)

Question 6

What is important in diagnosing PD?

Answer 6

Clinical Attachment Loss (CAL); discovered thru probing depth

Question 7

Name the tissues of the periodontium?

Answer 7

gingiva, alveolar mucosa, and Periodontal attachment apparatus

Question 8

Name the 3 tissues of the attachment apparatus?

Answer 8

PDL, Cementum, Alveolar Bone

Question 9

What is permanent of the Mucogingival Junction (MGJ)?

Answer 9

MGJ does not change; that line is permanent

Question 10

Describe the location of the MGJ?

Answer 10

base of gingival mucosa and the top of the alveolar mucosa

Question 11

What 2 epithelia meet at the MGJ?

Answer 11

keratinized and non-keratinized epithelium meet

Question 12

Keratnized gingiva and mucosal epithelium separated by?

Answer 12

mucogingival junction (MGJ)

Question 13

Most keratinized and least keratinized?

Answer 13

most - hard palate

least - cheek

Question 14

Gingival width in the mouth?

Answer 14

incisors have more keratinized tissue = Incisors > Molars > Premolars

Question 15

Describe mucosal tissue

Answer 15

non-keratinized, smooth, shiny surface, reddish

Question 16

Where do you find the least attached tissue?

Answer 16

crevicular epithelium (aka free gingiva)

Question 17

Where do you find the most attached tissue?

Answer 17

junctional epithelium

Question 18

Name 1st math equation to determine attached gingiva?

Answer 18

AG = KG - PD

Question 19

Name 2nd math equation to determine attached gingiva?

Answer 19

AG = (GM to MGJ) - PD

Question 20

Know 3 types of epithelium?

Answer 20

Crevicular (sulcular) epithelium
Oral (outer) epithelium
Junctional epithelium

Question 21

Describe crevicular (sulcular) epithelium?

Answer 21

resistant to fluid flow
nonkeratinized and thin
without rete pegs
potential to keratinize

Question 22

Describe oral (outer) epithelium?

Answer 22

keratinized
0.2-1.3 mm thick
has some non-keratinocytes
10-12 day turnover

Question 23

What are the non-keratinocytes?

Answer 23

melanocytes, langerhan cells, merkel cells

Question 24

Describe junctional epithelium?

Answer 24

non-keratinized
2-30 cells thick
0.25 - 1.35 mm thick
have Hemidesmosomes
1-6 day turnover

Question 25

True/False Hemidesmosomes can attach to teeth and implants?

Answer 25

True

Question 26

How is Junctional Epithelium attached?

Answer 26

internal basal lamina to tooth or implant; lamina densa; lamina lucida external basal lamina to connective tissue

Question 27

What is stippling?

Answer 27

depressions/raised areas in surface of attached gingiva; occurs at sites of rete pegs

Question 28

What is the turnover the cells?

Answer 28

oral epithelium - 10-12 days | junctional epithelium - 1-6 days

Question 29

What is keratinized?

Answer 29

interdental gingiva oral/outer ginigiva crevicular has POTENTIAL to become keratinized

Question 30

What is the PDL?

Answer 30

a group of principle fibers that insert into cementum and the alveolar bone

Question 31

What are the teriminal fibers of the PDL called?

Answer 31

Sharpey's fibers

Question 32

What is the function of the PDL?

Answer 32

transmit forces and maintain attachment

Question 33

PDL has a width of?

Answer 33

0.1 - 0.2 mm

Question 34

True/False The PDL can rebuild on implants?

Answer 34

False

Question 35

What are the gingival fiber groups?

Answer 35

``` Circular group Gingivodental group Dentoperiosteal group Alveologingival group Transseptal fibers ```

Question 36

What are the periodontal fiber groups?

Answer 36

``` Alveolar crest group Horizontal group Oblique group Apical group Interradicular group ```