What is the measurement indicating the probing depth when the gingival margin is at the CEJ?

What is the measurement indicating the probing depth when the gingival margin is at the CEJ?

• A. It is always greater than CAL
• B. It equals CAL
• C. It is less than CAL
• D. It cannot be measured

Answer: (B)

When the gingival margin is at the cementoenamel junction (CEJ), the probing depth measurement directly reflects the distance from the gingival margin to the bottom of the periodontal pocket. In this scenario, since the gingival margin is at the CEJ, there is no discrepancy between the probing depth and the clinical attachment level (CAL). Therefore, the probing depth equals CAL. In cases where the gingival margin is elevated (recession) or has moved apically (due to inflammation or other factors), the relationship between probing depth and CAL would change. However, when the margin is at the CEJ, there are no additional measurements to account for, making these two values equal. Thus, the statement that the probing depth equals CAL when the gingival margin is at the CEJ is accurate.

When the gingival margin is at the cementoenamel junction (CEJ), the probing depth measurement directly reflects the distance from the gingival margin to the bottom of the periodontal pocket. In this scenario, since the gingival margin is at the CEJ, there is no discrepancy between the probing depth and the clinical attachment level (CAL). Therefore, the probing depth equals CAL.

In cases where the gingival margin is elevated (recession) or has moved apically (due to inflammation or other factors), the relationship between probing depth and CAL would change. However, when the margin is at the CEJ, there are no additional measurements to account for, making these two values equal. Thus, the statement that the probing depth equals CAL when the gingival margin is at the CEJ is accurate.