Dental The depth of clinical gingival sulcus is the distance between the gingival margin to the A Cementoenamel Junction B Alveolar crest C Apical extension of junctional epithelium D Apical penetration of the probe 💡 Explanation The depth of clinical gingival sulcus is the distance between the gingival margin to the ✓ Correct Answer: D. Apical penetration of the probe