In radiographic evaluation, the CEJ is primarily used as a reference point for measuring what?

In radiographic evaluation, the CEJ is primarily used as a reference point for measuring what?

• A. Vertical bone height
• B. Pulp vitality
• C. Sinus floor position
• D. Horizontal bone loss

Answer: (D)

The CEJ provides a stable landmark on a tooth that lets you quantify how much bone support remains by measuring the distance from the CEJ to the alveolar bone crest on radiographs. When the bone crest recedes evenly around the tooth, you’re looking at horizontal bone loss, which is why the CEJ is used as the reference point for evaluating this pattern. Pulp vitality and sinus floor position aren’t assessed with this radiographic reference, so those options don’t fit.

The CEJ provides a stable landmark on a tooth that lets you quantify how much bone support remains by measuring the distance from the CEJ to the alveolar bone crest on radiographs. When the bone crest recedes evenly around the tooth, you’re looking at horizontal bone loss, which is why the CEJ is used as the reference point for evaluating this pattern. Pulp vitality and sinus floor position aren’t assessed with this radiographic reference, so those options don’t fit.