Perio Maintenance Interval Calculator
Recall frequency from risk assessment and treatment response.
Inputs
%
Results
Recall interval (months)
4
Risk category (1-3)2
Annual visits3
Risk score5
5-year tooth loss risk (%)8%
Annual maintenance cost ($)$525.00
Home Care Freq2
How to Use This Calculator
- Enter the full-mouth bleeding on probing (BOP) percentage from your chart.
- Input the number of sites with probing depth ≥ 5 mm.
- Set smoking status (0 = non-smoker, 1 = current smoker) and diabetes status (0–2).
- Enter bone loss-to-age ratio from radiographic assessment.
- Review Recommended Maintenance Interval (months) and risk category (Low/Moderate/High).
What each input means
- BOP percentage (%)
- Bleeding on probing percentage across all sites.
- Sites with PD >= 5mm
- Number of sites with residual probing depth >= 5mm.
- Current smoker (0/1)
- 0 = non-smoker, 1 = current smoker.
- Diabetes status (0-2)
- 0 = none, 1 = controlled, 2 = uncontrolled.
- Compliance (1-3)
- 1 = excellent, 2 = moderate, 3 = poor home care.
What each result means
- Recall interval (months)
- Recommended months between periodontal maintenance visits.
- Risk category (1-3)
- 1 = low, 2 = moderate, 3 = high risk for recurrence.
- Annual visits
- Number of maintenance visits per year.
- Risk score
- Composite risk score (higher = more risk).
- 5-year tooth loss risk (%)
- Estimated 5-year tooth loss probability.
- Annual maintenance cost ($)
- Estimated annual periodontal maintenance cost.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersBOP percentage (%) = 15, Sites with PD >= 5mm = 3, Current smoker (0/1) = 0, Diabetes status (0-2) = 0 = 5 input(s) provided
- Calculate Recall intervalRecall interval4 = 4
- Calculate Risk categoryRisk category2 = 2
- Calculate Annual visitsAnnual visits3 = 3
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