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3 Microbiology > REVISION - OVERVIEW > Flashcards

REVISION - OVERVIEW Flashcards

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Biology 101 flashcards
1
Q

put the following bacteria in order form supragingival to subgingival
Actinomyces
spirochaetes
strep.mutans
fusobacteri
strep. sanguinis and strep. oralis

A

Strep. mutans
Strep. sanguinis and Strep. oralis
Actinomyces
Fusobacterium
Spirochaetes

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2
Q

what gram +ve bacteria are linked to periodontal abscess?

A

Gram +ve
Streptococci - anginosus group

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3
Q

what gram -ve bacteria are linked to periodontal abscess?

A

Gram -ve
GNABs : Porphyromonas, prevotella
Fusobacteria nucleatum

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4
Q

what gram +ve bacteria are linked to endodontic infection?

A

Gram +ve
Streptococcus group
Enterococcus faecalis

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5
Q

what gram -ve bacteria are linked to endodontic infection?

A

Gram -ve
Fusobacterium nucleatum
Tannerella forsythia

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6
Q

what bacteria are linked to peri-implantitis?
are they gram +ve or -ve?

A

Staphylococcus aureus
Staphylococcus epidermidis
gram +ve

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7
Q

what bacteria are linked to chronic perio lesions?
are they gram +ve or -ve?

A

Gram -ve
Treponema denticola (oral spirochaete)

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8
Q

what bacteria is characterised by grannular pus? are they gram +ve or -ve

A

actinomyces
gram +ve
(actnomycosis)

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9
Q

what bacteria is linked to gingivitis? is it gram +ve or -ve?

A

Tannerella forsythia (-)

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10
Q

what bacteria is linked to chronic periodontitis? are they gram +ve or -ve

A

Spirochaetes (-)
campylobacter (-)
Porphyromonas gingivalis (-)
Fusobacterium nucleatum (-)

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11
Q

what bacteria is linked to rapidly progressing periodontitis? are they gram -ve or +ve?

A

Prevotella intermedia (-)
Porphyromonas gingivalis (-)
Fusobacterium nucleatum (-)

most important
Aggregatibacter actinomycetemcomitans (-)

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12
Q

what bacteria are in the red complex? are they gram -ve or +ve?

A

Porphyromonas gingivalis (black pigmented) (-)

Tannerella forsythia (black pigmented) (-)

Treponema denticola (-)

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13
Q

what is the red complex associated with?

A

Active pockets of periodontitis

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14
Q

what bacteria are in the orange complex? are they gram +ve or -ve

A

Fusobacteria (-)

Prevotella nigriscins (black pigmented) (-)

Prevotella intermedia (black pigmented) (-)

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15
Q

what is the orange complex associated with?

A

increase plaque in periodontitis

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16
Q

what bacteria is associated with recurrent periodontal disease? chronic

A

Campylobacter rectus

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17
Q

what bacteria is linked to ulcerative gingivitis? is it gram +ve or -ve

A

Gram -ve
Treponema vincetii

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18
Q

what bacteria is the biggest contributor to caries? is it gram +ve or -ve

A

Strep. mutans
gram +Ve

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19
Q

name the bacteria linked to caries other than strep mutans. are they gram +ve or -ve?

A

Strep. Sanguinis

Lactobacilli - dentine caries

Actinomyces - root surface caries

Rothia denticariosa

all gram +ve

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20
Q

what bacteria can prevent caries?

A

Veillonella - uses lactic acid -> prevents lowering pH

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21
Q

what bacteria are associated with ludwig’s angina? are they gram +ve or -ve?

A

B-haemolytic oral streptococci

Staphylococci

both gram +ve

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22
Q

what bacteria is linked to the skin infections: Impetigo, cellulitis, acute necrotising fasciitis? gram +ve or -ve?

A

Gram +ve Strep. Pyogenes

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23
Q

what bacteria is linked to the skin infections: cutaneous, soft tissue and pulmonary disease and acute bacterial parotitis? gram +ve or -ve

A

Gram +ve Staph. Aureus

24
Q

what bacteria is linked to the autoimmune diseases Rheumatic fever (heart) and glomerulonephritis (kidneys)? gram +ve or -ve?

A

Gram +ve Strep. Pyogenes

25
Q

what bacteria are linked to upper respiratory tract infections? gram +ve or -ve?

A

Bordetella pertussis (-), cornybacterium diptheria (+), haemophilus influenza (-)

26
Q

what bacteria is linked to whooping cough?

A

Gram -ve Bordetella Pertusis

27
Q

what bacteria is linked to diptheria? gram +ve or -ve?

A

Gram +ve Cornybacterium Diptheria

28
Q

what bacteria is linked to Influenza/septicaemia/meningitis?
gram +ve or -ve?

A

Gram -ve Haemophilus influenza

29
Q

what bacteria is linked lower respiratory tract infections? gram +ve or -ve?

A

Haemophilus influenza -ve

Streptococcus pneumonia +ve

Legionella pneumophilia -ve

Myobacterium tuberculosis

30
Q

where is staph.aureus located?

A

In nose, perineum and oral environment

31
Q

is staph.aureus gram +ve or -ve?

A

gram +ve

32
Q

what unique thing can Staph.aureus do?

A

coagulate blood plasma

33
Q

what does staph.aureus linked to?

A

Skin infections: cutaneous, soft tissue and pulmonary disease and Acute bacterial parotitis

34
Q

is staph.epidermis gram +ve or -ve?

A

gram +ve

35
Q

where is staph.epidermis located?

A

on everyones skin

36
Q

what is staph.epidermis linked to?

A

associated with foreign devices

37
Q

whos at risk from staph.epidermis?

A

immunocompromised

38
Q

there are 3 groups of streptococci, what are they?

A

A-haemolysis
B-haemolysis
Y-haemolysis

39
Q

what streptococci are A-haemolytic?

A

most oral streptococci

40
Q

what streptococci are B-haemolytic?

A

strep.pyogenes

41
Q

where is strep.pyogenes located?

A

at the back of the throat

42
Q

how is strep.pyogenes identified?

A

by presence of M protein

43
Q

what is strep.pyogenes linked to?

A

skin infections
upper respiratory tract infections
autoimmune disease

44
Q

what streptococci are Y-heamolytic?

A

enterococcus faecalis

45
Q

what is enterococcus faecalis linked to?

A

healthy individuals
it is a commensal

But linked to endodontic infections

46
Q

what is strep.mutans linked to?

A

caries

47
Q

what are the virulence factors for strep.mutans?

A

acidogenic
aciduric
extracellular polysaccharide

48
Q

why is is useful that strep.mutans take up a wide range of carbohydrates?

A

as xylotol is taken up but once metabolised is toxic and kills the bacteria

49
Q

how do strep.mutans attach to the teeth?

A

protein antigens (attachment to pellicle - > potential vaccine)

glucotransferase (produce glucans)

glucan binding proteins (aggregation)

50
Q

what are red complex bacteria associated with?

A

active pockets of periodontitis

51
Q

what bacteria are in the red complex?

A

prophyromonas gingivalis
tanerella forsythia
treponema denticola

52
Q

other than periodontitis what else is porphyromonas gingivalis linked to systemically?

A

alzheimer’s disease

53
Q

are red complex bacteria B-haemolytic?

A

yes

54
Q

what are orange complex bacteria associated with?

A

increased plaque in periodontitis

55
Q

what bacteria are orange complex?

A

fusobacterium
prevotella nigrescins
prevotella intermedia

56
Q

what is fusobacterium associated with systemically?

A

colorectal cancer

57
Q

name the black pigmented bacteria and their complex

A

porphyromonas gingivalis (red)
tanerella forsythia (red)
prevotella (orange)

3 Microbiology (14 decks)

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