INBDE (Integrated National Board Dental Examination) Practice Exam

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What defines Miller mobility class 3?

  1. normal

  2. slightly more than normal

  3. <1mm

  4. >1mm and can be vertically depressed in socket

The correct answer is: >1mm and can be vertically depressed in socket

Miller mobility class 3 is defined by being able to move more than 1mm and can be vertically depressed in the socket. Option A is incorrect because it describes normal mobility, not class 3. Option B is also incorrect because it describes slightly more than normal mobility, not class 3. Option C is incorrect because it only defines mobility that is less than 1mm, not class 3. Therefore, option D is the correct definition for Miller mobility class 3.

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