California Registered Dental Assistant (RDA) Written Practice Exam

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Prepare for the California Registered Dental Assistant Exam. Study with flashcards and multiple choice questions featuring hints and explanations. Gear up for your certification today!

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What is the proper method for decontaminating impressions before sending them to the laboratory?

Only rinse with water
Sterilize using autoclave
Clean and disinfect
Dry and package

The correct answer is: Clean and disinfect

Cleaning and disinfecting is the proper method for decontaminating impressions before sending them to the laboratory. Rinsing with only water may remove some debris, but it is not enough to fully decontaminate the impressions. Sterilizing using an autoclave is unnecessary and may even damage the impressions. Drying and packaging without prior cleaning and disinfecting can also cause contamination. Therefore, the most effective and appropriate method is to clean and disinfect the impressions before sending them to the laboratory.