Biofilm

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Questions and Answers

A well-organized community of bacteria that adheres to surfaces and is embedded in an extracellular slime layer is termed:

  • Aerobic
  • Biofilm (correct)
  • Anaerobic
  • Bacterial microcolony

Bacteria attachment zones can be defined into distinct areas, select the most appropriate response:

  • Tooth attached, tissue attached and unattached (correct)
  • Anterior and posterior
  • Enamel, cementum and dentine
  • Dorsum and ventral

Bacteria that have a double cell membranes and that do not stain purple with crystal violet are called:

  • Gram positive
  • Aerobic
  • Anaerobic (correct)
  • Gram Negative

Microbial plaque is considered the primary cause of periodontal disease:

<p>True (A)</p> Signup and view all the answers

Plaque biofilms are best removed by using mouthwash and adjustive chemical agents

<p>False (B)</p> Signup and view all the answers

The term biofilm can be defined as a complex dynamic microbial community embedded within extracellular matrix

<p>True (A)</p> Signup and view all the answers

The term biofilm can be defined as a simple dynamic microbial community embedded within extracellular matrix

<p>False (B)</p> Signup and view all the answers

Which of the following would be most effective in controlling the bacteria in a dental plaque biofilm?

<p>Toothbrush and floss (A)</p> Signup and view all the answers

Which structure of a biofilm facilitates the movement of nutrients to the bacteria?

<p>Fluid channels (A)</p> Signup and view all the answers

Flashcards

What is a Biofilm?

A well-organized community of bacteria that adheres to surfaces and is embedded in an extracellular slime layer.

Bacteria attachment zones

Tooth attached, tissue attached, and unattached.

What are Anaerobic Bacteria?

Bacteria with double cell membranes that do not stain purple with crystal violet.

Microbial plaque

The primary cause of periodontal disease.

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Plaque biofilm removal

Disrupting the physical structure of the biofilm is the most effective method.

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Biofilm definition

A complex, dynamic microbial community embedded within an extracellular matrix.

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Controlling plaque biofilm

Physical removal using toothbrush and floss.

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Fluid channels in biofilm

Facilitates the movement of nutrients to the bacteria.

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