Which statement correctly lists the possible positions of the gingival margin relative to cemento-enamel junction?

Which statement correctly lists the possible positions of the gingival margin relative to cemento-enamel junction?

• A. Recessed
• B. At the same level with CEJ
• C. Covered over CEJ
• D. All of the above

Answer: (D)

Understanding the relation of the gingival margin to the CEJ requires recognizing the CEJ as a fixed landmark. The free gingival margin can be located apical to the CEJ (recession), at the same level as the CEJ, or coronal to the CEJ (the CEJ is covered by gingiva). In health the margin is commonly a little coronal to the CEJ, but recession can pull it apically, and procedures or gingival overgrowth can position the margin closer to or even above the CEJ. Because each of these three relationships can occur clinically, all of the listed possibilities are correct.

Understanding the relation of the gingival margin to the CEJ requires recognizing the CEJ as a fixed landmark. The free gingival margin can be located apical to the CEJ (recession), at the same level as the CEJ, or coronal to the CEJ (the CEJ is covered by gingiva). In health the margin is commonly a little coronal to the CEJ, but recession can pull it apically, and procedures or gingival overgrowth can position the margin closer to or even above the CEJ. Because each of these three relationships can occur clinically, all of the listed possibilities are correct.