RDA Practice Exam – California RDA Test Prep & Free Practice Test (2026)

When mixing dental material powder, the recommended practice is to introduce half of the material into the liquid first. This allows for more controlled and precise mixing, ensuring that the powder is evenly distributed and reducing the risk of air bubbles forming. If all of the material is added at once, it may be difficult to properly mix and could result in an inconsistent mixture. Similarly, introducing three quarters or one quarter of the material may also result in an imbalanced mixture. Therefore, the best option is to start with half of the material and gradually add more as needed.