INBDE (Integrated National Board Dental Examination) Practice Exam

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How much force can a quarter turn make on a Hyrax expander?

  1. 50N

  2. 100N

  3. 150N

  4. 200N

The correct answer is: 100N

A quarter turn on a Hyrax expander can produce up to 100N of force, which is the most out of the given options. Option A, 50N, is a lower amount of force and would not be considered a quarter turn. Option C, 150N, and Option D, 200N, are both larger amounts of force and would require more than a quarter turn to reach.

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