| Scoring | criterion for CPI |
| 0 | Healthy |
| 1 | Bleeding On Probing |
| 2 | Calculus detected, but all the black band visible |
| 3 | Pocket 4–5 (gingival margin within black band visible) |
| 4 | Pocket 6mm or more (Black band not visible) |
| X | Excluded sextant |
| 9 | Not recorded |
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