Periodontal Risk Assessment
Lang & Tonetti (2003) Hexagonal Model — Clinical Decision Support. No data is saved to any patient record.
Patient Parameters
0%
Low <10% · Medium 10–25% · High >25%
Low = 0 · Medium = 1–4 · High ≥ 5
Ratio = Bone Loss % ÷ Age. Low <0.5 · Medium 0.5–1.0 · High >1.0
Ratio: —
Low = 0 · Medium = 1–4 · High ≥ 5
Fill in the parameters to calculate risk
Overall Risk Category
Parameter Breakdown
Clinical Note
About this tool
Based on the Lang & Tonetti (2003) periodontal risk assessment (PRA) model, published in Journal of Clinical Periodontology. The hexagonal model evaluates six independent risk axes; the worst single axis determines overall risk category.
SPT Recall Intervals
| Risk | Recall | Rationale |
|---|---|---|
| Low | Every 12 months | Stable, low inflammation |
| Medium | Every 6 months | Monitor closely |
| High | Every 3–4 months | Active risk present |
| Very High | Every 3 months | Multiple high-risk factors |
This tool is for clinical decision support only. Always apply clinical judgement. No data is transmitted or stored.