The largest healthy acceptable space between the tooth surface and the gingival margin (gingival crevice) is?

The largest healthy acceptable space between the tooth surface and the gingival margin (gingival crevice) is?

• A. 3mm
• B. 1mm
• C. 5mm
• D. 2mm

Answer: (A)

The space between the tooth surface and the gingival margin is the gingival sulcus. In a healthy mouth, this depth is shallow, typically 1 to 3 millimeters. The largest acceptable depth is 3 millimeters because depths greater than this indicate pocket formation and possible periodontal attachment loss. A sulcus depth of 3 mm is still compatible with healthy gingival tissue, while deeper measurements suggest inflammation or disease and require further evaluation. When assessing, a periodontal probe is gently inserted into the sulcus to the deepest point, and readings are used alongside other signs (like bleeding on probing) to determine periodontal health. So, 3 mm represents the upper limit of a healthy sulcus, with deeper depths signaling potential problems.

The space between the tooth surface and the gingival margin is the gingival sulcus. In a healthy mouth, this depth is shallow, typically 1 to 3 millimeters. The largest acceptable depth is 3 millimeters because depths greater than this indicate pocket formation and possible periodontal attachment loss. A sulcus depth of 3 mm is still compatible with healthy gingival tissue, while deeper measurements suggest inflammation or disease and require further evaluation.

When assessing, a periodontal probe is gently inserted into the sulcus to the deepest point, and readings are used alongside other signs (like bleeding on probing) to determine periodontal health. So, 3 mm represents the upper limit of a healthy sulcus, with deeper depths signaling potential problems.