California Registered Dental Assistant (RDA) Written Practice Exam

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What is the purpose of using a scavenger unit in a dental office?

  1. Collecting debris

  2. Water purification

  3. Respiratory protection during the use of nitrous oxide

  4. Sterilizing instruments

The correct answer is: Respiratory protection during the use of nitrous oxide

Using a scavenger unit in a dental office serves the purpose of providing respiratory protection during the use of nitrous oxide. This is because nitrous oxide can be potentially harmful to both patients and staff if not properly managed. The scavenger unit ensures that any excess nitrous oxide is safely removed from the air before it can be inhaled. Therefore, options A, B, and D are incorrect as they do not address the main purpose of using a scavenger unit in a dental office to protect against exposure to nitrous oxide.

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