Table 2 Tooth Wear Index (TWI) [6]
From: A plea for the development of an universally accepted modular tooth wear evaluation system
Score | Description | ||
|---|---|---|---|
| Â | Buccal/Lingual/Occlusal | Incisal | Cervical |
0 | No loss of enamel surface characteristics | No loss of enamel surface characteristics | No change in contour |
1 | Loss of enamel surface characteristics | Loss of enamel surface characteristics | Minimal loss of contour |
2 | Loss of enamel exposing dentine for less than 1/3 of the surface | Loss of enamel just exposing dentine | Defect <1Â mm deep |
3 | Loss of enamel exposing dentine for more than 1/3 of the surface | Loss of enamel and substantial loss of dentine, but not exposing pulp secondary dentine | Defect 1–2 mm deep |
4 | Complete loss of enamel, or pulp exposure, or exposure of secondary dentine | Pulp exposure or exposure of secondary dentine | Defect >2Â mm deep, or pulp exposure or exposure of secondary dentine |