Which of the following is the depression of the interdental gingiva that connects the lingual and facial papillae?
  1. Gingival col
  2. Alveolar mucosa
  3. Attached gingiva
  4. Mucogingival junction
Explanation
Answer: A - The gingival col is a depression located just apical to the contact of adjacent teeth. It is located in the interdental gingiva, connecting the buccal and lingual papilla.
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