Probing depths are used to assess what?

• A. The depth of the enamel
• B. The color of gingiva
• C. The history of dental cleaning
• D. The depth of the gingival sulcus and periodontal pockets

Answer: (D)

Probing depths reveal the depth of the gingival sulcus or periodontal pockets, which indicates how much attachment has been lost and how severe periodontal disease is. A periodontal probe is gently inserted from the gingival margin down to the base of the sulcus or pocket, and the measurement in millimeters is recorded at multiple sites on each tooth. In a healthy mouth, sulci are shallow; deeper readings reflect pocket formation and progressive periodontal destruction, guiding treatment planning from routine cleaning to more advanced therapy. This measurement specifically assesses sulcus/pocket depth and is not about enamel depth, gingival color, or a patient’s history of dental cleaning.