Table 5.
Scoring system for extent and severity
| Score | Extent | Severity | |||
|---|---|---|---|---|---|
| Pitting* | Delamination | Creep/Deformation | Polishing | ||
| 0 | No damage | No damage | No damage | No damage | No damage |
| 1 | 1%–25% of the surface damaged | Rare, small pits | Color change, no surface involvement | Minor visible creep | Machine marks still visible |
| 2 | 26%–50% of the surface damaged | Abundant small to medium pits | Surface involvement, no material loss | Palpable surface/edge shape change | No machine marks, reflection of lighting source visible |
| 3 | 51%–75% of the surface damaged | Abundant medium to large pits | Material loss | Gross surface shape change | Detailed reflection of lighting source |
| 4 | 76%–100% of the surface damaged | NA | NA | NA | NA |
* Embedded cement was not counted as pitting; NA = not applicable.