Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Microbiology 2 > M9 Gram +ve Oral Bacteria > Flashcards

M9 Gram +ve Oral Bacteria Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

what are the major genera of Gm +ve oral Bac

A 
Street.cocci
Staph.cocci
actinomyces
lactobacillus
eubacterium
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what kind of bac is streptococci

A

facultative and obligate anaerobes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what kind f bac is staphylococci

A

facultative anaerobes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what kind of is actinomyces

A

facultative anaerobes and obligate anaerobes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what kind of bac is lactobacillus

A

facultative anaerobes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what kind of bac is eubacterium

A

obligate anaerobes

isolated from perio disease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is bac CNS

A

coagulase negative staphylococci

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what does oral staph pose a risk of

A

oral disease and cross conamination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

how much of staphylococcus is MRSA

A

10%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the remainder of staphylococcus

A

90% methicillin sensitive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what are the second most important group of ba involved in dental aries

A

after streptococci

then lactobacilli

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

are lactobacilli gram +ve or -ve

A

+ve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the shape of lactobacilli

A

pleomorphic rods

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what are lactobacilli like for colonisation

A

poor adhesion so late colonisers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what does the acidogenic and auric properties of lactobacilli mean

A

survive and reproduce under acid conditions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what are the 3 main groups of lactobacilli

A

homolactic fermenters
heterolactic fermenters
facultative heterolactic fermenters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what are homolactic fermenters

A

produce only lactic acid (>65%)

from sugar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what are heterolactic fermenters

A

equal amounts of lactic acid, acetic acid and CO2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what are facultative heterolactic fermenters

A

normally homolactic fermenters

switch to heterolactic feremntation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what are some sp of lactobacilli

A

casei Gp
acidophilus
fermentum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what s lactobacillus case Gp

A

homofermenter
- rhamnosus
- paracasei
(competes with mutant)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what is lactobacillus acidophilus

A

homofermenter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what is lactobacillus fermentum

A

heterofermenter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what caries is lactobacilli assc with

A

deep carious lesson

low pH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what does the level of lactobacilli in saliva correlate with

A

carb intake

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

the fall of what bac has an impact on lactobacilli

A

lactobacilli increase as mutant streptococci fall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

does lactobacilli initiate demineralisation

A

no

imp in progression when low pH

28
Q

what is a caries susceptibility test

A

determine cariogenic bac in saliva
(s mutans and lacobacilli)
used on high risk pt

29
Q

lactobacillus tend to have another function

A

protective
probiotic
- rhamnosus - milk
- casei and hamnosus reduced s mutans

30
Q

are actinocymes gram +ve or -ve

A

+ve

31
Q

is actinomyces prominent in the mouth

A

major proportion of microflora

  • approximal
  • gingival crevice
32
Q

how are actinomyces arranged

A

single
pairs
short chains
clumps

33
Q

how does actinomyces grow

A

branched network or hyphae not spores

34
Q

what kind of bac is actinomyces

A

anaerobic or facultative

35
Q

what aids actinomyces adherence and aggregation

A

fimbriae

36
Q

where in the mouth is actinocyes mostly found

A

dental plaque

tonsil crypts

37
Q

what is the shape of acinomyces

A

pleomorphic

38
Q

what are some sep of actinomyces in the mouth

A

naesludii

odontolyticus

39
Q

what kind of caries usually assc with actinomyces

A

root surface caries

40
Q

what does a naesludii produce

A

extracellular slime and fructans for sucrose

41
Q

when are naesludii able to produce disease

A

when into to a gnotobiotic hamster (sterile)

42
Q

what can naesludii cause

A

actinomycosis

43
Q

where is a israelii found

A

mouth
dental plaque
female genital tract

44
Q

what kind of bac is a israelii

A

strict anaerobe

45
Q

what does a israelii most likely cause

A

opportunistic

acitnomycosis

46
Q

what is actinomycosis characteristic pus

A

thick fluid form sinuses
yellow
granular
‘sulphur granules’

47
Q

what does granules in pus show

A

pathognomic

indicator of disease

48
Q

what are the sulphur granules

A

aggregations of actinomyces filaments
smell
grittiness

49
Q

how much israelii present in actinomyces leisons

A

> 80%

50
Q

what are some co infectors with israelii

A

haemophilia

propionibacterium

51
Q

what site treatment of actinomycosis

A

remove original dental focus of infection
incision an drain lesion
long term antibiotic treatment

52
Q

what si the antibiotic treatment used against actinomycosis

A

penicillin/amoxycillin - 6 weeks

erythromycin used if allergy

53
Q

what are some chaacretrstics of the eubacterium species

A

diverse
obligate aearbes
bacilli - filamentous
gram vary

54
Q

what does asaccharolyic mean

A

able to metabolic sugar for energy

55
Q

what are other gram +ve oral bac

A

propionibacterium
rothia
corynebacterium

56
Q

what are propionibacterium

A

gram +ve
non spore forming
anaerobes

57
Q

what are the sb groups of propionibacterium

A

propionicus

acnes

58
Q

what are the propionibacterium propionicus

A

prod proprionic acid
mouth, dental plaque and calculus
similar to acitnmyces israelii = actinomycosis

59
Q

what is propionibacterium acnes

A

inhabit skin
acne lesions
soft tissue abscess
in peril pockets assc with period disease

60
Q

what is rothia dentocariosa

A 
progression caries
pleomorphic rods 
long chains 
supraginigival plaque 
opportunistic --> endocarditis
61
Q

what are the main types of corynebacteria

A

diphtheria

matruchotii

62
Q

what is corynebacteria matruchotii

A

assc with dental plaque

initiate calculus children with active caries

63
Q

where is actinomyces most dist

A

sp assc with higher populations in supra gingival plaque

64
Q

where is propionibacterium most dist

A

sp similar assc in supra and sub gingival plaque

65
Q

where is eubacterium usually assc

A

sub gingival plaque

-anaerobic

66
Q

where are streptococci usually dist

A

genera assc with range of environments

Microbiology 2 (23 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions