In the 2017 AAP/EFP classification, which of the following is a Stage IV criterion rather than a Stage III criterion?

  • Correct answer

    Loss of 5 or more teeth due to periodontitis

  • Probing depths of 6 mm or more

  • Class II or III furcation involvement

  • Vertical bone loss of 3 mm or more

This question is one of 15 in AFK practice: Periodontics. Test yourself on all of them.

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Explanations

  • Tooth loss of 5 or more teeth due to periodontitis is a Stage IV severity criterion. Probing depths of 6 mm or more, vertical bone loss of 3 mm or more and Class II or III furcation involvement are Stage III complexity factors.

    Source: Tonetti, Greenwell and Kornman, Staging and grading of periodontitis (J Periodontol 2018) link — oneguy

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