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Periodontal Classification — NDEB AFK MCQ

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ModeratePeriodontologyPeriodontal ClassificationNDEB AFK

A 45-year-old patient with a 6 mm probing depth on the mesial surface of tooth 36 and clinical attachment loss of 4 mm would be classified under the 2017 AAP/EFP periodontal classification as having which stage of periodontitis?

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Correct answer: B — Stage II

Under the 2017 AAP/EFP classification, Stage II periodontitis is characterised by clinical attachment loss (CAL) of 3-4 mm, radiographic bone loss involving the coronal third (15-33%), maximum probing depth ≤5 mm (though the case shows 6 mm which crosses into stage III considerations). However, with CAL of 4 mm and assuming no tooth loss due to periodontitis and no complex considerations, this most closely fits Stage II. Stage III requires CAL ≥5 mm or tooth loss due to periodontitis.

Reference: Tonetti MS et al – J Clin Periodontol, 2018 (2017 Classification)