| Scoring | criterion for CPI |
| 0 | Loss of attachment 0–3mm(CEJ not visible & CPI score 0–3 |
| If the CEJ is not visible & the CPI score is 4, or if the CEJ is visible | |
| 1 | Loss of attachment is 4–5mm(CEJ within the black band |
| 2 | Loss of attachment is 6–8mm(CEJ between the upper limit of the black band & the 8–5mm |
| 3 | Loss of attachment 9–12mm(CEJ between the 8.5mm & 11.5mm rings |
| 4 | Loss of attachment 12mm or more |
| X | Excluded sextant (Less than two teeth present |
| 9 | Not recorded (CEJ neither visible nor detectable) |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.