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Biofilm
46問 • 1年前
  • Tameyra Stefani Al-Suhairy
    • 通報

    問題一覧

  • 1

    effective in reducing caries in animals and humans

    Antibiotics

  • 2

    can demineralize enamel in vitro and produce lesions similar to naturally occurring caries

    Oral bacteria

  • 3

    gelatinous mass (soft, translucent and tenaciously adhering) of bacteria adhering to the tooth surface.

    Dental plaque

  • 4

    Factors needed for caries initiation 4

    Flora, Diet, Susceptible surface, Time

  • 5

    Strep associated with caries Humans 2

    Mutans, Sobrinus

  • 6

    Strep associated with caries Rats

    rattus

  • 7

    Strep associated with caries hamsters

    cricetus

  • 8

    associated with caries primates 2

    macacae, downei

  • 9

    collective term for all the serotypes

    mutans streptococci or MS

  • 10

    can produce great amounts of acids (acidogenic), are tolerant of acidic environments (aciduric), are vigorously stimulated by sucrose, and appear to be the primary organism associated with caries in man.

    MS and Lactobacilli

  • 11

    enamel caries

    mutans streptococci or MS

  • 12

    MS and Lactobacilli species

    dentin caries

  • 13

    root caries

    Actinomycetes species (e.g. Actinomycetes viscosus)

  • 14

    able to produce lactic acid from sucrose

    Acidogenic

  • 15

    can live in pH as low as 4.2

    Aciduric

  • 16

    adhere to pellicle and contribute to plaque formation. The survival of organisms in the oral environment depends on their ability to adhere to a surface.

    s mutans

  • 17

    Able to form large amounts of extracellular, sticky and insoluble glucan plaque matrix

    S mutans

  • 18

    total number of bacteria inoculated into the mouth

    Threshold space

  • 19

    relatively cell-free layer of precipitated salivary protein material

    Pellicle

  • 20

    Pellicle

  • 21

    recognizes plaque as pathogenic only when signs of associated disease are present.

    Specific plaque hypothesis

  • 22

    assumes that all plaque is pathogenic

    Non specific plaque hypothesis

  • 23

    occur as the process of development of a biological community where with non previously existed

    Primary succession

  • 24

    In oral cavity it is the process of normal change in the oral flora occuring over the lifetime of an individual.

    Primary succession

  • 25

    process of plaque regrowth after the tooth surface is cleaned

    Secondary succession

  • 26

    similar plaque will reform on the teeth after prophylaxis if there is no other change in the oral environmental conditions.

    Secondary succession

  • 27

    period of remineralization

    Plaque pH above 5.5

  • 28

    period of demineralization

    Plaque pH below 5.5

  • 29

    make it easy for acidogenic bacteria to adhere and extracellular matrix facilitates cohesion

    Special receptors

  • 30

    favors colonization of acidogenic bacteria and exclusion of non-cariogenic bacteria (e.g., S. sanguis, S. mitis)

    high sucrose diet or frequent ingestion of sucrose

  • 31

    Development of bacterial plaque 7

    Pellicle (1 µm thick) covers all oral surfaces within 30 minutes to 1 hour after brushing, it becomes colonized by bacteria within 12-24 hours., high sucrose diet or frequent ingestion of sucrose - favors colonization of acidogenic bacteria and exclusion of non-cariogenic bacteria (e.g., S. sanguis, S. mitis), special receptors make it easy for acidogenic bacteria to adhere and extracellular matrix facilitates cohesion, Metabolism of sucrose results in acid production – lactic acid from sucrose., Plaque pH below 5.5 – period of demineralization, Plaque pH above 5.5 – period of remineralization

  • 32

    S. mutans is considered the most cariogenic species of mutans streptococci

    True

  • 33

    Actinomyces sp. are microorganisms present in early plaque that can initiate enamel caries formation.

    False

  • 34

    Cariogenic bacteria are anaerobic microorganisms that are unable to tolerate acidic environment

    False

  • 35

    The extracellular matrix of plaque is a polysaccharide-rich substance mainly composed of glucans.

    True

  • 36

    Ecological plaque hypothesis states that any change in the environmental factors will in turn cause change in the balance of oral flora, predisposing a site to the disease.

    True

  • 37

    Pellicle is formed by the precipitation of salivary proteins and by the attachment of bacteria

    False

  • 38

    Corn-cob colonies of bacteria are early inhabitants of plaque.

    False

  • 39

    S. mutans requires high threshold dose in order for them to compete with other oral species.

    True

  • 40

    Lactobacillus sp. Initiates dentin caries formation.

    True

  • 41

    The early colonizers of plaque are filamentous bacteria.

    False

  • 42

    Lactobacillus acidophilus

  • 43

    Actinomyces species

  • 44

    able to produce lactic acid from sucrose

    Acidogenic

  • 45

    can live in pH as low as 4.2

    Aciduric

  • 46

    S mutans

    • Sporeformers

    Sporeformers

    Tameyra Stefani Al-Suhairy · 44問 · 1年前

    Sporeformers

    Sporeformers

    44問 • 1年前
    Tameyra Stefani Al-Suhairy

    Spirochetes

    Spirochetes

    Tameyra Stefani Al-Suhairy · 46問 · 1年前

    Spirochetes

    Spirochetes

    46問 • 1年前
    Tameyra Stefani Al-Suhairy

    Subcutaneous, Systemic, Opportunistic Mycoses

    Subcutaneous, Systemic, Opportunistic Mycoses

    Tameyra Stefani Al-Suhairy · 75問 · 1年前

    Subcutaneous, Systemic, Opportunistic Mycoses

    Subcutaneous, Systemic, Opportunistic Mycoses

    75問 • 1年前
    Tameyra Stefani Al-Suhairy

    Mycobacteria

    Mycobacteria

    Tameyra Stefani Al-Suhairy · 46問 · 1年前

    Mycobacteria

    Mycobacteria

    46問 • 1年前
    Tameyra Stefani Al-Suhairy

    Bacterial Classification, morphology, utrastructure

    Bacterial Classification, morphology, utrastructure

    Tameyra Stefani Al-Suhairy · 64問 · 1年前

    Bacterial Classification, morphology, utrastructure

    Bacterial Classification, morphology, utrastructure

    64問 • 1年前
    Tameyra Stefani Al-Suhairy

    HIV

    HIV

    Tameyra Stefani Al-Suhairy · 31問 · 1年前

    HIV

    HIV

    31問 • 1年前
    Tameyra Stefani Al-Suhairy

    CORONA

    CORONA

    Tameyra Stefani Al-Suhairy · 24問 · 1年前

    CORONA

    CORONA

    24問 • 1年前
    Tameyra Stefani Al-Suhairy

    PAPILLO

    PAPILLO

    Tameyra Stefani Al-Suhairy · 15問 · 1年前

    PAPILLO

    PAPILLO

    15問 • 1年前
    Tameyra Stefani Al-Suhairy

    ADENO

    ADENO

    Tameyra Stefani Al-Suhairy · 16問 · 1年前

    ADENO

    ADENO

    16問 • 1年前
    Tameyra Stefani Al-Suhairy

    POX

    POX

    Tameyra Stefani Al-Suhairy · 6問 · 1年前

    POX

    POX

    6問 • 1年前
    Tameyra Stefani Al-Suhairy

    PARVO

    PARVO

    Tameyra Stefani Al-Suhairy · 25問 · 1年前

    PARVO

    PARVO

    25問 • 1年前
    Tameyra Stefani Al-Suhairy

    HEPATOTROPHIC

    HEPATOTROPHIC

    Tameyra Stefani Al-Suhairy · 24問 · 1年前

    HEPATOTROPHIC

    HEPATOTROPHIC

    24問 • 1年前
    Tameyra Stefani Al-Suhairy

    PICORNA

    PICORNA

    Tameyra Stefani Al-Suhairy · 25問 · 1年前

    PICORNA

    PICORNA

    25問 • 1年前
    Tameyra Stefani Al-Suhairy

    RABIES

    RABIES

    Tameyra Stefani Al-Suhairy · 26問 · 1年前

    RABIES

    RABIES

    26問 • 1年前
    Tameyra Stefani Al-Suhairy

    PARAMYXO

    PARAMYXO

    Tameyra Stefani Al-Suhairy · 20問 · 1年前

    PARAMYXO

    PARAMYXO

    20問 • 1年前
    Tameyra Stefani Al-Suhairy

    HERPES

    HERPES

    Tameyra Stefani Al-Suhairy · 40問 · 1年前

    HERPES

    HERPES

    40問 • 1年前
    Tameyra Stefani Al-Suhairy

    ORTHO

    ORTHO

    Tameyra Stefani Al-Suhairy · 7問 · 1年前

    ORTHO

    ORTHO

    7問 • 1年前
    Tameyra Stefani Al-Suhairy

    FLAVI

    FLAVI

    Tameyra Stefani Al-Suhairy · 24問 · 1年前

    FLAVI

    FLAVI

    24問 • 1年前
    Tameyra Stefani Al-Suhairy

    TOGA

    TOGA

    Tameyra Stefani Al-Suhairy · 19問 · 1年前

    TOGA

    TOGA

    19問 • 1年前
    Tameyra Stefani Al-Suhairy

    VIRUS STRUCTURE

    VIRUS STRUCTURE

    Tameyra Stefani Al-Suhairy · 16問 · 1年前

    VIRUS STRUCTURE

    VIRUS STRUCTURE

    16問 • 1年前
    Tameyra Stefani Al-Suhairy

    問題一覧

  • 1

    effective in reducing caries in animals and humans

    Antibiotics

  • 2

    can demineralize enamel in vitro and produce lesions similar to naturally occurring caries

    Oral bacteria

  • 3

    gelatinous mass (soft, translucent and tenaciously adhering) of bacteria adhering to the tooth surface.

    Dental plaque

  • 4

    Factors needed for caries initiation 4

    Flora, Diet, Susceptible surface, Time

  • 5

    Strep associated with caries Humans 2

    Mutans, Sobrinus

  • 6

    Strep associated with caries Rats

    rattus

  • 7

    Strep associated with caries hamsters

    cricetus

  • 8

    associated with caries primates 2

    macacae, downei

  • 9

    collective term for all the serotypes

    mutans streptococci or MS

  • 10

    can produce great amounts of acids (acidogenic), are tolerant of acidic environments (aciduric), are vigorously stimulated by sucrose, and appear to be the primary organism associated with caries in man.

    MS and Lactobacilli

  • 11

    enamel caries

    mutans streptococci or MS

  • 12

    MS and Lactobacilli species

    dentin caries

  • 13

    root caries

    Actinomycetes species (e.g. Actinomycetes viscosus)

  • 14

    able to produce lactic acid from sucrose

    Acidogenic

  • 15

    can live in pH as low as 4.2

    Aciduric

  • 16

    adhere to pellicle and contribute to plaque formation. The survival of organisms in the oral environment depends on their ability to adhere to a surface.

    s mutans

  • 17

    Able to form large amounts of extracellular, sticky and insoluble glucan plaque matrix

    S mutans

  • 18

    total number of bacteria inoculated into the mouth

    Threshold space

  • 19

    relatively cell-free layer of precipitated salivary protein material

    Pellicle

  • 20

    Pellicle

  • 21

    recognizes plaque as pathogenic only when signs of associated disease are present.

    Specific plaque hypothesis

  • 22

    assumes that all plaque is pathogenic

    Non specific plaque hypothesis

  • 23

    occur as the process of development of a biological community where with non previously existed

    Primary succession

  • 24

    In oral cavity it is the process of normal change in the oral flora occuring over the lifetime of an individual.

    Primary succession

  • 25

    process of plaque regrowth after the tooth surface is cleaned

    Secondary succession

  • 26

    similar plaque will reform on the teeth after prophylaxis if there is no other change in the oral environmental conditions.

    Secondary succession

  • 27

    period of remineralization

    Plaque pH above 5.5

  • 28

    period of demineralization

    Plaque pH below 5.5

  • 29

    make it easy for acidogenic bacteria to adhere and extracellular matrix facilitates cohesion

    Special receptors

  • 30

    favors colonization of acidogenic bacteria and exclusion of non-cariogenic bacteria (e.g., S. sanguis, S. mitis)

    high sucrose diet or frequent ingestion of sucrose

  • 31

    Development of bacterial plaque 7

    Pellicle (1 µm thick) covers all oral surfaces within 30 minutes to 1 hour after brushing, it becomes colonized by bacteria within 12-24 hours., high sucrose diet or frequent ingestion of sucrose - favors colonization of acidogenic bacteria and exclusion of non-cariogenic bacteria (e.g., S. sanguis, S. mitis), special receptors make it easy for acidogenic bacteria to adhere and extracellular matrix facilitates cohesion, Metabolism of sucrose results in acid production – lactic acid from sucrose., Plaque pH below 5.5 – period of demineralization, Plaque pH above 5.5 – period of remineralization

  • 32

    S. mutans is considered the most cariogenic species of mutans streptococci

    True

  • 33

    Actinomyces sp. are microorganisms present in early plaque that can initiate enamel caries formation.

    False

  • 34

    Cariogenic bacteria are anaerobic microorganisms that are unable to tolerate acidic environment

    False

  • 35

    The extracellular matrix of plaque is a polysaccharide-rich substance mainly composed of glucans.

    True

  • 36

    Ecological plaque hypothesis states that any change in the environmental factors will in turn cause change in the balance of oral flora, predisposing a site to the disease.

    True

  • 37

    Pellicle is formed by the precipitation of salivary proteins and by the attachment of bacteria

    False

  • 38

    Corn-cob colonies of bacteria are early inhabitants of plaque.

    False

  • 39

    S. mutans requires high threshold dose in order for them to compete with other oral species.

    True

  • 40

    Lactobacillus sp. Initiates dentin caries formation.

    True

  • 41

    The early colonizers of plaque are filamentous bacteria.

    False

  • 42

    Lactobacillus acidophilus

  • 43

    Actinomyces species

  • 44

    able to produce lactic acid from sucrose

    Acidogenic

  • 45

    can live in pH as low as 4.2

    Aciduric

  • 46

    S mutans