Which measurement is obtained with a periodontal probe?

• A. Color of gingiva
• B. Pocket depths
• C. Radiographs
• D. Patient comfort

Answer: (B)

Pocket depth measurements come from using a periodontal probe. By gently inserting the probe into the gingival sulcus around each tooth and following the pocket contour, you read the depth in millimeters where the probe meets the junctional area of the tooth and soft tissue. These readings indicate how deep the periodontal pocket is, with healthy sulci typically 1–3 mm. This is the primary measurement the probe provides for assessing periodontal health. Visual attributes like color of the gingiva are observed visually rather than measured with the probe, radiographs require imaging to assess bone and tooth support, and patient comfort reflects a subjective experience rather than a numerical probe measurement.