Mouthwash Components and Usage

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Questions and Answers

Which of the following ingredients provides therapeutic benefits in mouthwashes?

  • Water
  • Fluoride (correct)
  • Glycerin
  • Ethanol

A mouthwash is formulated without which of the following components?

  • Astringent
  • Buffering agent
  • Binding agent (correct)
  • Water

What is the spectrum of activity of chlorhexidine against bacteria?

  • Effective against Gram-negative bacteria only
  • Effective against Gram-positive bacteria only
  • Equally effective against both Gram-positive and Gram-negative bacteria
  • Effective against a wide range of bacteria but more effective against Gram-positive bacteria (correct)

Which of the following mouthwashes incorporates a mild local anesthetic within its formulation?

<p>Eludril (B)</p>
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What ingredient categorizes Listerine as a specific type of mouthwash?

<p>Phenol (D)</p>
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What is the definition of a bactericidal agent?

<p>An agent that directly kills bacteria (D)</p>
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How does a bacteriostatic agent affect bacterial growth?

<p>It inhibits the synthesis of bacterial proteins, stopping growth. (C)</p>
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In the original formulation of Corsodyl mouthwash, what was the concentration of chlorhexidine gluconate?

<p>0.2% (D)</p>
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Under what circumstances should all patients be advised to use a mouthwash?

<p>Only as an adjunct to mechanical oral hygiene when specific needs or conditions indicate (D)</p>
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What is NOT typically a side effect associated with the prolonged or excessive use of chlorhexidine mouthwash?

<p>Tooth whitening (A)</p>
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Which of the following is a primary function of oxygenating agents in mouthwashes?

<p>To provide an antiseptic effect through the release of oxygen (A)</p>
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What role do buffering agents primarily serve in mouthwash formulations?

<p>Adjusting and maintaining the pH for optimal activity and stability (D)</p>
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Which of the following is a primary reason for including water in mouthwash formulations?

<p>To act as a solvent and vehicle for other ingredients (A)</p>
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How does fluoride contribute to the effectiveness of mouthwash in preventing dental caries?

<p>By promoting the remineralization of tooth enamel (B)</p>
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Why might some mouthwashes contain astringents?

<p>To cause the contraction of tissues (A)</p>
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What is the implication of chlorhexidine's cationic nature for its efficacy?

<p>It binds strongly to negatively charged bacterial cell walls. (C)</p>
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What is a possible mechanism of action for phenols in mouthwash?

<p>Denaturation of bacterial proteins (C)</p>
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What oral condition might warrant using a mouthwash containing a mild local anesthetic?

<p>Recurrent aphthous ulcers (A)</p>
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What distinguishes bactericidal mouthwashes from those that are merely bacteriostatic?

<p>Bactericidal mouthwashes kill bacteria outright, while bacteriostatic mouthwashes only inhibit growth. (B)</p>
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Which of the following is a consideration when advising patients about mouthwash use?

<p>Some mouthwashes may interact with certain medications. (C)</p>
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Flashcards

Mouthwash Components?

Fluoride, phenols and oxygenating agents.

Components of Mouthwashes?

Astringents, buffering agents, anodynes and water.

Chlorhexidine and Bacteria

Chlorhexidine is effective against both gram-positive and gram-negative bacteria.

Local Anaesthetic Mouthwash?

Eludril contains a mild local anaesthetic.

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Listerine Type?

Listerine contains essential oils such as thymol and eucalyptol.

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Bactericidal Definition?

Bactericidal refers to killing or destroying bacteria.

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Bacteriostatic Definition?

Bacteriostatic refers to inhibiting the growth of bacteria.

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Chlorhexidine Gluconate Concentration?

0.2%

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Advise Mouthwash Use?

Mouthwash use should be determined on a case-by-case basis.

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Chlorhexidine Overuse Side Effect?

Whitening is not a side effect of overuse of chlorhexidine.

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Study Notes

  • Mouthwashes contain anesthetics, fluoride, phenols, and oxygenating agents.
  • Binding agents are not a component of mouthwashes.
  • Chlorhexidine is not only effective against gram+ bacteria.
  • Eludril contains a mild local anesthetic.
  • Listerine is a phenol-based mouthwash.
  • Bactericidal does not define slowing the rate of bacteria growth.
  • Bacteriostatic defines slowing the rate of bacteria growth.
  • The concentration of chlorhexidine gluconate in original Corsodyl mouthwash is 0.2%.
  • Not all patients should be advised to use a mouthwash.
  • Whitening is not a side effect of overuse of chlorhexidine.

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