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Periodontics · single question

Patient with periodontitis who smokes and has bite collapse. Classification?

  1. Stage IV, Grade C
  2. Stage I, Grade A
  3. Stage II, Grade B
  4. Stage III, Grade A
Show answer and explanation

Correct answer: A. Stage IV, Grade C

  • A. Correct. Bite collapse indicates advanced (Stage IV) periodontitis with loss of masticatory function, and smoking is a major risk factor that elevates the case to Grade C (rapid progression/poor prognosis) in the 2017 periodontal disease classification.
  • B. Stage I/Grade A represents early, slowly progressing disease — inconsistent with bite collapse and smoking history.
  • C. Stage II/Grade B represents moderate disease with moderate progression risk, less severe than this presentation.
  • D. Stage III/Grade A under-represents both the severity (bite collapse suggests Stage IV) and the risk factor impact (smoking elevates grade to C, not A).

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