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Perio II: Etiology and Pathogenesis > Perio Microbiology 2: Plaque Formation > Flashcards

Perio Microbiology 2: Plaque Formation Flashcards

1
Q

What are the 3 levels of tooth deposits from bacteria?

A

Materia Alba
Dental Plaque
Calculus

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2
Q

What does Materia Alba look like?

A

White, cheeselike

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3
Q

What is Materia Alba made up of?

A

Salivary proteins
Some bacteria
Desquamated epithelial cells
Some food debris

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4
Q

What is the structure of Materia Alba?

A

There is no organized structure

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5
Q

How easily can you get rid of Materia Alba?

A

Displaced with water spray

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6
Q

What does dental plaque look like?

A

Resilient clear to yellow-gray substance

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7
Q

What is plaque made of?

A

Primarily bacteria in a matrix of salivary glycoproteins and ECM polysaccharides

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8
Q

Can you remove plaque with rinsing or water spray?

A

No

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9
Q

What is calculus?

A

A hard deposit that forms from the mineralization of dental plaque

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10
Q

What is on the outside of calculus?

A

A layer of unmineralized plaque

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11
Q

What are the 3 phases of Plaque maturation?

A

Dental pellicle
Initial colonization by Bacteria
Secondary colonization by Bacteria

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12
Q

What is the Dental Pellicle?

A

A glycoprotein

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13
Q

Where do the components of the pellicle come from?

A

Salive
Gingival crevicular fluid
Bacterial cells
Host cells

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14
Q

How soon after cleaning does the pellicle form?

A

1 minute

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15
Q

How does the pellicle benefit the teeth?

A

Protection and lubrication

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16
Q

How does the pellicle benefit the bacteria?

A

Provides an attachment point

17
Q

What types of bacteria are the initial colonizers?

A

Gram +

Facultative aerobes

18
Q

What virulence factors allow for initial colonization?

A

Adhesins

Fimbriae

19
Q

What species makes up the majority (60-80%) of the initial colonizers?

A

Steptococcus

20
Q

What is the second primary species of initial colonizers?

A

Actinomyces

21
Q

What is secondary colonization?

A

Microbes adhere to bacterial cells already in the plaque mass

22
Q

What is the term for the process used in secondary colonization?

A

Coaggregation

23
Q

What are the 4 species of bacteria that are the first secondary colonizers?

A

Prevotella
Capnocyophagia
Fusobacterium
Porphyromonous

24
Q

What are the 3 species that colonize last?

A

F. nucleatum
P. gingivalis
T. denticola

Perio II: Etiology and Pathogenesis (25 decks)

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