California Registered Dental Assistant (RDA) Written Practice Exam

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Aside from alcohol, which antimicrobial agent is common in hand hygiene products?

Fluoride
Benzalkonium Chloride
Chlorohexidine
Iodine

The correct answer is: Chlorohexidine

Antimicrobial agents are substances that kill or inhibit the growth of microorganisms. Hand hygiene products, such as hand sanitizers and soaps, often contain antimicrobial agents to help remove and kill germs on our hands. Of the options given, only Chlorohexidine is commonly used as an antimicrobial agent in hand hygiene products. A is incorrect because fluoride is commonly used in toothpaste but not as an antimicrobial agent in hand hygiene products. B is incorrect because Benzalkonium Chloride is primarily used in skincare products, not hand hygiene products. D is incorrect because iodine is commonly used in antiseptics and disinfectants, but not as commonly found in hand hygiene products. Therefore, the correct option is C, Chlorohexidine.