Module 1 Intro to the tissues of the Periodontium

Question 1

The study of that branch of dentistry dealing with diagnosis, treatment and prevention of disease of the supporting and investing tissues of the teeth

Answer 1

Periodontology

Question 2

What is the periodontium

Answer 2

The functional system of the teeth and attached them to the jaw bone

Question 3

The alveolar bone proper is also known as

Answer 3

the cribriform plate

Question 4

What are the tissues of the periodontium

Answer 4

gingiva, PDL, cementum, alveolar bone / process

Question 5

where is the gingiva attached

Answer 5

at the junctional epithelium

Question 6

what are the layers of gingiva mucosa

Answer 6

outer epi layer, CT core

Question 7

Where does mucosa extend to

Answer 7

extend to cover the alveolar bone

Question 8

What are the 4 main anatomical areas of the gingiva

Answer 8

free, attached, sulcular, interdental gingiva

Question 9

This gingiva is slightly coronal to the CEJ

Answer 9

the free gingiva

Question 10

where is the free gingiva attached

Answer 10

at the junctional epithelium

Question 11

what does the free gingiva form

Answer 11

the wall of the sulcus

Question 12

in health what does the free gingiva follow

Answer 12

the contour of the tooth

Question 13

where does the attached gingiva begin? end

Answer 13

at the junctional epithelium, at the mucogingival junction

Question 14

where is the attached gingiva typically the narrowest

Answer 14

at the premolars

Question 15

what is the purpose of the alveolar gingiva

Answer 15

the underlying structures

Question 16

what is the sulcular gingiva

Answer 16

the space between the tooth and the free gingiva

Question 17

what is the normal depth of the sulcus

Answer 17

1-3 mm

Question 18

what are the two parts of the interdental gingiva

Answer 18

lingual and facial papilla

Question 19

the lateral borders of the interdental papilla are formed by

Answer 19

the free gingiva

Question 20

What is the col

Answer 20

the indentation of the interdental gingiva below the contact area

Question 21

what is the purpose of the interdental papilla

Answer 21

to prevent the impaction of food

Question 22

What is the free gingival groove

Answer 22

marks the free and attached gingiva

Question 23

what is the mucogingival junction

Answer 23

marks the junction between the alveolar mucosa and the attached gingiva

Question 24

Soft dense fibrous CT attaches to the root of the teeth and connects it to the bone around the teeth

Answer 24

PDL

Question 25

functions of PDL (6)

Answer 25

supportive, absorptive, formative, sensory, nutritive, resorptive

Question 26

thin mineralized CT that covers the dentin

Answer 26

cementum

Question 27

which is harder dentin or cementum

Answer 27

dentin

Question 28

CEJ

Answer 28

where the cementum and the enamel meet

Question 29

True or False: is cementum resistant to resorption

Answer 29

true

Question 30

To compensate for occlusal wear the cementum :

Answer 30

deposits in the apex of the root

Question 31

Mineralized CT that contains 60% inorganic, 25 % inorganic and 15% water

Answer 31

alveolar bone

Question 32

what are the three layers of alveolar bone

Answer 32

Cortical bone/ plate, alveolar bone proper, cancellous/ spongy bone

Question 33

Alveolar bone proper is also known as

Answer 33

cribriform plate

Question 34

where is the PDL embedded

Answer 34

in the alveolar bone proper

Question 35

This layer of alveolar bone is composed of compact dense bone

Answer 35

cortical plate/ bone

Question 36

in relation to the jaw, where is the cortical bone located

Answer 36

outside the jaw

Question 37

in relation to the alveolar bone proper where is the cortical bone located

Answer 37

around the alveolar bone proper

Question 38

where is the cortical bone the thickest

Answer 38

in the buccal side of the molars

Question 39

the most coronal part of the alveolar bone is

Answer 39

the alveolar crest

Question 40

where is the alveolar crest located

Answer 40

1-2 mm apical of the CEJ

Question 41

where is the spongy bone located

Answer 41

between the cortical bone and the alveolar process

Question 42

What is the nerve supply of the mand and max

Answer 42

The trigeminal nerve

Question 43

What branch of the trigeminal nerve innervates the max

Answer 43

the 2nd branch of the trigeminal nerve

Question 44

which branch of the maxillary nerve of the trigeminal nerve supplies the gingiva and the teeth

Answer 44

the superior alveolar nerve - posterior, middle and anterior

Question 45

what nodes drains the PDL

Answer 45

the submandibular lymph nodes

Question 46

The deep cervical lymph nodes drains

Answer 46

the palatal gingiva of max

Question 47

the submental nodes also drain

Answer 47

the gingival lower incisors (PDL too)