Under the 2017 AAP/EFP classification, when is periodontitis described as localized?

  • Correct answer

    When fewer than 30% of teeth are involved

  • When fewer than 50% of teeth are involved

  • When disease is limited to one sextant

  • When fewer than 10% of sites are involved

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

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Explanations

  • Extent is described as localized when less than 30% of teeth are involved and generalized at 30% or more, with a separate molar/incisor pattern descriptor.

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

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