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Periodontal Pocket Depth Score Calculator

Work out periodontal pocket depth score instantly with clear inputs, formula shown and shareable results.

About Periodontal Pocket Depth Score Calculator

Expresses deep periodontal pockets as a share of sites probed, the distribution measure used alongside staging and grading.

Formula

Pocket distribution

Percentage of sites 4 mm or deeper = sites 4 mm or deeper / sites probed x 100; the same for 6 mm sites

Worked example

With the default values below, Periodontal Pocket Depth Score Calculator returns Distribution pattern of Localised deep pocketing. Change any input above and every figure here is recalculated in your browser.

Inputs used

Sites probedaccepts 6–400
168
Sites 4 mm or deeperaccepts 0–400
30
Sites 6 mm or deeperaccepts 0–400
8

Results

Sites 4 mm or deeper
17.86%
Sites 6 mm or deeper
4.76%
Distribution pattern
Localised deep pocketing
Sites under 4 mm
138

Step by step

  1. 1Values used
  2. 2Pocket distribution
  3. 3Distribution pattern= Localised deep pocketing
  4. 4Sites 4 mm or deeper= 17.86
  5. 5Sites 6 mm or deeper= 4.76
  6. 6Sites under 4 mm= 138

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.

Frequently Asked Questions

Why does distribution matter?

The 2018 classification distinguishes localised disease affecting under 30% of teeth from generalised disease.

Is pocket depth enough?

No. Clinical attachment loss, bone loss and bleeding are also needed for staging and grading.

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