Case: bleeding on probing in 80–90% of sites, probing depths 2–3 mm everywhere EXCEPT tooth #23 with 8 mm CAL on the labial only; no tooth loss; otherwise healthy pink gingiva. Diagnosis?

Correct answer: D. Generalized gingivitis with localized gingival recession at #23

• A. Incorrect – there are no pockets/attachment loss beyond the single recession site.
• B. Incorrect – there is no generalized attachment loss; pockets are 2–3 mm throughout.
• C. Incorrect. NUG features painful, punched-out, necrotic interdental papillae with pseudomembrane — not the picture here of generally healthy gingiva with one localized recession defect.
• D. Correct – widespread BOP with shallow (2–3 mm) pockets = gingivitis; the 8 mm attachment loss confined to the labial of #23 (visible root) is a localized RECESSION defect, not generalized pocketing.