Lecture 1 Questions

Question 1

What percentage of people have periodontal diseases?

Answer 1

64%

Question 2

What are the 4 sleeves of the periodontium?

Answer 2

cementum -> PDL -> alveolus -> gingiva

Question 3

What are the parts of the alveolar bone?

Answer 3

inner cortical bone and outer cortical bone

Question 4

What are other names of the inner cortical bone?

Answer 4

alveolar bone proper and bundle bone

Question 5

What are on the ends of PDL?

Answer 5

root cementum and sharpie’s fibers

Question 6

Where does ectomesenchyme condense?

Answer 6

around dental organ

Question 7

What does DP give rise too?

Answer 7

dentin and pulp

Question 8

What does dental follicle give rise too?

Answer 8

PDL

Question 9

What does DP determine?

Answer 9

shape and form of tooth

Question 10

What is the outer layer of HERS important for?

Answer 10

cementum formation

Question 11

What does inner enamel layer secrete?

Answer 11

enamel related proteins

Question 12

What is the sequence of perio formation?

Answer 12

crown formation -> HERS forms -> inner layer of HERS secretes enamel related proteins -> outer layer of HERS breaks off -> DF cells can form any type of bone/perio/cementum cell

Question 13

Name the 3 parts of the gingiva?

Answer 13

free, attached and interdental papilla

Question 14

Where are the extents of the free gingiva?

Answer 14

FGM to FGG

Question 15

Where is FGM?

Answer 15

is the coronal end of gingiva. Can be measured by probe depth

Question 16

Where is FGG?

Answer 16

is the junction between free and attached gingiva. Shows where the CEJ is, and is only found in 30-40% of adults

Question 17

Where does the oral epithelium face?

Answer 17

oral cavity

Question 18

where does oral sulcular epithelium face?

Answer 18

tooth surface without contacting it

Question 19

What does junctional epithelium do?

Answer 19

provides contact between gingiva and tooth

Question 20

what are some characteristics of attached gingiva?

Answer 20

• firm, coral pink, immobile, varying widths
• gingiva goes up when tooth supra erupts -> passive eruption! Which accounts for increase of gingival width
• barely any in anterior lingual, lots in molar lingual
• supports marginal gingiva (free gingiva)
• base for parts of the mouth that move, like lips and tongue and cheek
• withstand frictional and functional stresses b/c of a thick CT layer firmly bound to periosteum and bone
• barrier for passage of inflammation

Question 21

is stippling automatically a bad thing?

Answer 21

nah bitch, 40% of adults present it, and it’s a sign of health so stfu. only when it is lost is it a sign of inflammation

Question 22

What is the mucogingival junction?

Answer 22

junction between attached gingiva and alveolar mucosa

NOT IN THE PALATE BC THERES NO KERATINIZED TISSUE THERE!

Question 23

Why should we care about the gingiva?

Answer 23

if patient has great oral hygiene then thickness of attached gingiva doesn’t matter. if not, width and thickness matter to prevent inflammation

Question 24

What are the dimensions of width?

Answer 24

apical - coronal –> matters if you have perio disease

Question 25

What are the dimensions for thickness?

Answer 25

bucco-gingival