INBDE (Integrated National Board Dental Examination) Practice Exam

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What describes Miller mobility class 1?

  1. normal

  2. slightly more than normal

  3. <1mm

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

The correct answer is: slightly more than normal

Miller mobility class 1 indicates a slightly more than normal level of mobility in a joint. Option A, normal, is incorrect because a normal joint would not be classified as having increased mobility. Option C, <1mm, is incorrect because it does not refer to any level of mobility, and does not specify if it is increased or normal. Option D, >1mm and can be vertically depressed in socket, is incorrect because Miller mobility class 1 refers to a slightly increased level of mobility, not significantly increased to the point where the joint can be vertically depressed.