California Registered Dental Assistant (RDA) Written Practice Exam

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Acrylic resin for the fabrication of trays is supplied as

  1. powder and liquid

  2. gel and powder

  3. single liquid

  4. pre-mixed putty

The correct answer is: powder and liquid

Acrylic resin for the fabrication of trays is typically supplied as a powder and liquid form. Option B, gel and powder, is incorrect because gel and powder is typically used for making stone models rather than trays. Option C, single liquid, is also incorrect because acrylic resin requires both a powder and a liquid component to create the desired texture and hardness. Option D, pre-mixed putty, is incorrect because this is typically used for filling in cavities rather than fabricating trays.

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