California Registered Dental Assistant (RDA) Written Practice Exam

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Master the California Registered Dental Assistant (RDA) Written Exam with our comprehensive practice quiz. Tailored to mimic real exam conditions, it's your key to unlocking success and advancing your dental assisting career.

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How long should you wait before separating a model from the impression?

15-30 minutes
40-60 minutes
1-2 hours
Immediately

The correct answer is: 40-60 minutes

After taking an impression of a model, the recommended time to wait before separating the model is 40-60 minutes. This allows the impression to fully set and prevents distortion of the model when it is removed. Option A of 15-30 minutes may not be long enough for the impression to fully set. Option C of 1-2 hours may be too long, and the impression may become difficult to remove. Option D of immediately is not recommended as it may cause distortion of the impression and affect the accuracy of the model.