INBDE (Integrated National Board Dental Examination) Practice Exam

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Miller class 4 recession is characterized by:

No bone loss
Bone loss preventing total root coverage
Extending to MCJ with severe bone loss
Not extending to MCJ

The correct answer is: Extending to MCJ with severe bone loss

Miller Class 4 recession is characterized by recession that extends beyond the mucogingival junction (MGJ) with severe bone loss. This class of recession involves significant tissue and bone loss, making it challenging to achieve total root coverage. Option C correctly describes the characteristics of Miller Class 4 recession. Options A, B, and D are incorrect because: - Option A, "No bone loss," does not accurately describe Miller Class 4 recession, as it involves severe bone loss. - Option B, "Bone loss preventing total root coverage," is not specific to Miller Class 4 recession and can be seen in other classes of recession as well. - Option D, "Not extending to MGJ," is not correct as Miller Class 4 recession extends beyond the MGJ.