Table 2.
Modified Kim’s index to score tooth wear
| Score | Premolar | Molar |
|---|---|---|
| 0 | No visible wear | |
| 1 | 1P/1L | 1P/1L/2P/2L |
| 2 | 2P/2L/1S/1B | 3P/3L/4P/4L/1S/1B/2S/2B |
| 3 | 2S/2B | 3S/3B/4S/4B |
| 4 | Wear on more than 2/3rd of occlusal surfaces | |
| 5 | 1Pc/1Lc | 1Pc/1Lc/2Pc/2Lc |
| 6 | 2Pc/2Lc/1Sc/1Bc | 3Pc/3Lc/4Pc/4Lc/1Sc/1Bc/2Sc/2Bc |
| 7 | 2Sc/2Bc | 3Sc/3Bc/4Sc/4Bc |
| 8 | Concavity on more than 2/3 of occlusal surfaces | |
| 9 | Filling, *caries, *crown (all teeth) | |
| 10 | Missing, stump of tooth, pontic, denture (all teeth) | |
*If the extent of the filling materials or caries does not exceed 1/3rd of the occlusal surface so that the degree of occlusal wear can be determined, the pertinent score should be given. c: Concavity, ca: Concavity area, P: Point-like wear facet less than ca. 1 mm in diameter, L: Linear wear facet less than ca. 1 mm in width, S: Surface-like wear facet greater than ca. 1 mm in diameter, B: Band-like wear facet greater than ca. 1 mm in width or wear facet involving more than two surface-like wear facets, Concavity: The wear of dentin; in the situation where a tooth has several different degrees of occlusal wear, the highest degree should be selected as the occlusal wear score