When smiling, the black space between the buccal surface of the teeth and the cheek are the what?
  1. Golden proportion
  2. Black corridors
  3. Buccal corridors
  4. Occlusal proportion
Explanation
Answer: C - When smiling, the black space between the buccal surface of the teeth and the cheek are the buccal corridors. The buccal corridors are of particular interest when evaluating the esthetics of a smile. Veneers and other prosthetics aid in the manipulation of the buccal corridors appearance.
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