California Registered Dental Assistant (RDA) Written Practice Exam

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What is the purpose of a holding solution?

  1. To sterilize instruments

  2. To prevent hardening of debris and body fluids on instruments

  3. To clean the instruments

  4. To lubricate the instruments

The correct answer is: To prevent hardening of debris and body fluids on instruments

A holding solution is used to prevent hardening of debris and body fluids on instruments. Option A is incorrect because sterilization is not the main purpose of a holding solution. Option C is incorrect because a holding solution is not used to clean instruments. Option D is incorrect because a holding solution is not used to lubricate instruments. Therefore, option B is the best answer.