ch 18, fusobacteria, leptotrichia, and spirochaetes.

Question 1

Fusobacteria nucleatum subscp. polymorphum is found where?

Answer 1

healthy gingival tissue

Question 2

Fusobacteria nucleatum subscp. nucleatum is found where?

Answer 2

periodontal diseased pockets

Question 3

what shape are fusobacteria?

Answer 3

cigars with pointy ends

Question 4

what allows fusobacterium to stick?

Answer 4

FadaA fusobacterium adhesion A

Question 5

in combination with spirochaetesand fusobacterium cause what 3 things?

Answer 5

Acute necrotizing ulcerative gingivitis/ trench mouth
Vincents angina- ulcerative tonsilitis
Cancrum oris or noma- a sequal to acute ulcerative gingivitis which causes tissue death

Question 6

since fusobacteria adhere, what can they do?

Answer 6

be a part of plaque.

Question 7

leptotrichia is present where

Answer 7

present in dental plaque

Question 8

how many of the 5 genera of spirochaetes are pathogenic?

Answer 8

3, treponema, borrelia, leptospira

Question 9

all spirochaets are

Answer 9

anaerobic, or microaerophilic

Question 10

treponema pallidum

Answer 10

spread by contact with lesions, bodily fluids.

penicillin is drug of choice

Question 11

what does treponema pallidum subsp. pertenue cause?

Answer 11

yaws

Question 12

what does treponema carateum cause?

Answer 12

pinta- a depigmentation of skin

Question 13

where are oral treponemes found in the mouth?

Answer 13

gingival margin and crevice

Question 14

oral treponemes cause

Answer 14

are a component of fusospirochaetal complex of acute necrotizing ulcerative gingivitis and vincents angina. Also a coagent of advanced periodontal disease

Question 15

which oral treponeme is most proteolytic?

Answer 15

T. denticola - it degrades collagen and dentin.

Question 16

Borrelia burgdorferi

Answer 16

ticks and small mamals, it causes lyme disease and unilateral facial palsy

Question 17

leptospira

Answer 17

found in damp water and wet soil.

Question 18

lepptospira pathogenicity

Answer 18

Kidneys of some rodents act as a reservoir for L. interrogans and can cause human leptospirosis, which causes mild febrile illness to fatal attacks of jaundice and renal failure.