INBDE (Integrated National Board Dental Examination) Practice Exam

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Which type of recession includes bone loss preventing total root coverage?

  1. Miller class 2

  2. Miller class 1

  3. Miller class 3

  4. Miller class 4

The correct answer is: Miller class 3

Class 1 recession is characterized by gingival recession but without bone loss, class 2 recession has bone loss less than 3mm preventing complete root coverage, and class 4 recession has severe bone loss greater than 6mm. Therefore, class 3 recession includes moderate bone loss between 3-6mm which makes it the only option that includes bone loss preventing total root coverage.

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